Ernesto Barcelo | Universidad de la Costa (original) (raw)

Papers by Ernesto Barcelo

Cognitive Neuropsychology, 2021

Children with attention-deficit/hyperactivity disorder (ADHD) present a deficit in inhibitory con... more Children with attention-deficit/hyperactivity disorder (ADHD) present a deficit in inhibitory control. Still, it remains unclear whether it comes from a deficit in reactive inhibition (ability to stop the action in progress), proactive inhibition (ability to exert preparatory control), or both. We compared the performance of 39 children with ADHD and 42 typically developing children performing a Simon choice reaction time task. The Simon task is a conflict task that is well-adapted to dissociate proactive and reactive inhibition. Beyond classical global measures (mean reaction time, accuracy rate, and interference effect), we used more sophisticated dynamic analyses of the interference effect and accuracy rate to investigate reactive inhibition. We studied proactive inhibition through the congruency sequence effect (CSE). Our results showed that children with ADHD had impaired reactive but not proactive inhibition. Moreover, the deficit found in reactive inhibition seems to be due to both a stronger impulse capture and more difficulties in inhibiting impulsive responses. These findings contribute to a better understanding of how ADHD affects inhibitory control in children.

Journal of Applied Cognitive Neuroscience

The world’s population is aging, life expectancy is increasing in the past century as result of t... more The world’s population is aging, life expectancy is increasing in the past century as result of the improvements in healthcare and the people arrive to live longer and healthier. However, this has also resulted in increase the number of people with age-related diseases like most of dementia etiologies (fundamentally Alzheimer and Vascular dementia). The growth of people with dementia in the next 20 years will be exponential around the world but even more in those countries with Low and Medium Incomes (LMIC) due to the recently and future improve in health care and quality of life.

Journal of Applied Cognitive Neuroscience, 2020

In his book The Structure of Science Evolution, Thomas Khum defines a paradigmas “a set of belief... more In his book The Structure of Science Evolution, Thomas Khum defines a paradigmas “a set of beliefs, values and accepted techniques that define the exercise of a scientific discipline”. A new paradigm is a change of vision, a reconstruction of our knowledge in the light of discoveries; in the words of Socratics, “all cognition is a recognition”.

Archives of Clinical Neuropsychology, 2021

Objective Teleneuropsychology (teleNP) could potentially expand access to services for patients w... more Objective Teleneuropsychology (teleNP) could potentially expand access to services for patients who are confined, have limited personal access to healthcare, or live in remote areas. The emergence of the COVID-19 pandemic has significantly increased the use of teleNP for cognitive assessments. The main objective of these recommendations is to identify which procedures can be potentially best adapted to the practice of teleNP in Latin America, and thereby facilitate professional decision-making in the region. Method Steps taken to develop these recommendations included (1) formation of an international working group with representatives from 12 Latin American countries; (2) assessment of rationale, scope, and objectives; (3) formulation of clinical questions; (4) evidence search and selection; (5) evaluation of existing evidence and summary; and (6) formulation of recommendations. Levels of evidence were graded following the Oxford Centre for Evidence-Based Medicine system. Databases...

Journal of Applied Cognitive Neuroscience, 2021

COVID-19 pandemic is the world's greatest public health concern, at the same time with various st... more COVID-19 pandemic is the world's greatest public health concern, at the same time with various stages depending on the regions. At the moment of this Editorial (01/06/21), 170 million people have been confirmed cases, which represents 2% of the population of the entire planet. World Health Organization-WHO estimates that 20% of the population has been infected and the numbers continue to grow (WHO, s.f.). Currently, three of the five countries with the highest number of cases are in

Psicogente, Dec 3, 2023

Objetivo: El propósito de este estudio es establecer los mecanismos de la actividad Bioquímica a ... more Objetivo: El propósito de este estudio es establecer los mecanismos de la actividad Bioquímica a través del Estrés Psicológico que influyen en la enfermedad del vitiligo desde una perspectiva neurocientifica, mediante una revisión sistemática de la literatura de los últimos 5 años. Método: La búsqueda sistemática se llevó a cabo en las bases de datos Scopus, PubMed y Web of Science para identificar los estudios que describan la enfermedad de Vitiligo, el estrés psicológico y la bioquímica del cerebro, se establecieron criterios de inclusión y exclusión para la selección de los artículos, así mismo, se evaluó su calidad y pertinencia. Resultados: La revisión sistemática arrojó 15.503 artículos, 70 fueron preseleccionados de acuerdo a lo informado en el resumen y validados para lectura completa. Para la síntesis narrativa se utilizaron 23 artículos científicos. Conclusión: La enfermedad de vitiligo guarda una estrecha relación con el estrés psicológico y está acompañado de un desequilibrio bioquímico que conduce a un proceso inflamatorio y destructivo de los melanocitos de la piel.

Journal of Applied Cognitive Neuroscience, 2020

Breathing techniques are key components of yoga, meditation and relaxation practices that are w... more Breathing techniques are key components of yoga, meditation and relaxation practices that are well known for reducing anxiety and improving overall well-being. To evaluate the efficacy of breathing techniques in pain and cognitive function. We conducted a literature review searching the main literature databases (medline, lilacs, Cochrane library) including randomized clinical trials. We assessed the risk of bias of the included studies using the methodology proposed by the Cochrane collaboration. In total, we found 16 studies that met the inclusion criteria, with an intermediate or unclear overall risk of bias. When combining the different breathing techniques vs control in the included studies, we found a statistically significant difference in terms of the visual analog scale (Difference of means, random effects; -1.21 [95% CI -1.75 to -0.68]; I2: 95%). Meditation-based breathing techniques would improve pain and cognitive function in patients with a painful entity or healthy v...

Revista de Psicología

El Bullying es un fenómeno social contemporáneo que impacta en múltiples estructuras y contextos ... more El Bullying es un fenómeno social contemporáneo que impacta en múltiples estructuras y contextos sociales. Este estudio tuvo como objetivo establecer la asociación entre funciones ejecutivas (FE), cognición social en adolescentes y el bullying. Estudio descriptivo transversal con una muestra de 109 sujetos seleccionados mediante un muestreo por conveniencia. Se realizó una regresión logística multinomial, encontrando que la cognición social es un factor protector (OR: .17 IC 95% .05-.59) (OR: .27 IC 95% .08- .85) en el grupo de los agresores respecto a los controles; así como en el grupo de víctimas respecto a los controles (OR: .15 IC 95% .05 – .42) (OR: .30 IC 95% (.11- .82). De esta manera, una adecuada cognición social se asocia como un factor protector ante el bullying y el presentar déficits en las FE se asocia a un incremento del riesgo de tres veces de padecerlo.

Biomedicines, 2021

Exosomes are extracellular vesicles released by cells, both constitutively and after cell activat... more Exosomes are extracellular vesicles released by cells, both constitutively and after cell activation, and are present in different types of biological fluid. Exosomes are involved in the pathogenesis of diseases, such as cancer, neurodegenerative diseases, pregnancy disorders and cardiovascular diseases, and have emerged as potential non-invasive biomarkers for the detection, prognosis and therapeutics of a myriad of diseases. In this review, we describe recent advances related to the regulatory mechanisms of exosome biogenesis, release and molecular composition, as well as their role in health and disease, and their potential use as disease biomarkers and therapeutic targets. In addition, the advantages and disadvantages of their main isolation methods, characterization and cargo analysis, as well as the experimental methods used for exosome-mediated drug delivery, are discussed. Finally, we present potential perspectives for the use of exosomes in future clinical practice.

Background: “Forgetfulness” is frequent in normal aging and characteristic of the early stages of... more Background: “Forgetfulness” is frequent in normal aging and characteristic of the early stages of dementia syndromes. The episodic memory test is central for detecting amnestic mild cognitive impairment (MCI). The Memory Binding Test (MBT) is a simple, easy and brief memory test to detect the early stage of episodic memory impairment. Objective: To validate the Argentine version of the MBT in a Latin American population and to estimate the diagnostic accuracy as a tool for early detection of MCI. Methods: 88 subjects (46 healthy controls and 42 patients with amnestic MCI) matched for age and educational level were evaluated by an extensive neuropsychological battery and the memory binding test. Results: A significantly better performance was detected in the control group; all MBT scales were predictive of MCI diagnosis (p<.01). The MBT showed high sensitivity (69%) and high specificity (88%), with a PPV of 93% and a NPV of 55% for associative paired recall. A statistically signif...

Computer Information Systems and Industrial Management, 2020

Disorder Attention Deficit/Hyperactivity Disorder, or ADHD, is recognized as one of the pathologi... more Disorder Attention Deficit/Hyperactivity Disorder, or ADHD, is recognized as one of the pathologies of high prevalence in children and adolescents from the global environment population; this disorder generates visible symptoms usually diminish with the passage of time in adulthood, however they remain concealed by demonstrations damnifican personal stability and human development apt. This article shows the results of the research aimed at determining the prevalence of symptoms of attention deficit hyperactivity disorder in Young Adults University of Barranquilla and its Metropolitan Area. The sample of 1600 young adults between 18 and 25 years, which has been estimated at 95% confidence level and a margin of error of 2.44%. The information was acquired through the application of exploratory instruments symptoms of attention deficit hyperactivity disorder. With the application of the algorithm different machine learning algorithms such as: Bagging, MultiBoostAB, Deci-sionStump, LogitBoost, FT, J48Graft, a high performance in the Bagging algorithm could be identified with the following results in quality metrics: Accuracy 91.67%, Precision 94.12%, Recall 88.89% and F-measure 91.43%.

Actas espanolas de psiquiatria, 2018

OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol le... more OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol levels as a measure of physiological stress in patients with fibromyalgia. METHODOLOGY A sample of 60 women was intentionally selected: 30 with Fibromyalgia diagnosis and 30 with normal controls. Cortisol levels were determined using two blood samples (AM and PM) and a neuropsychological and emotional battery was applied with a standardized protocol in Colombian population to evaluate different cognitive domains. Comparative and correlational non-parametric analyzes were performed, a multiple regression analysis to determine influences between variables. RESULTS Significant differences between the study groups in the neuropsychological variables (attention, memory, language, visual-constructive praxis and executive functions (EF), (p<0.05) were found, obtaining better scores in the control group. Significant correlations between the cortisol profile, with false acknowledgments of Rey au...

Actas espanolas de psiquiatria, 2018

OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol le... more OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol levels as a measure of physiological stress in patients with fibromyalgia. METHODOLOGY A sample of 60 women was intentionally selected: 30 with Fibromyalgia diagnosis and 30 with normal controls. Cortisol levels were determined using two blood samples (AM and PM) and a neuropsychological and emotional battery was applied with a standardized protocol in Colombian population to evaluate different cognitive domains. Comparative and correlational non-parametric analyzes were performed, a multiple regression analysis to determine influences between variables. RESULTS Significant differences between the study groups in the neuropsychological variables (attention, memory, language, visual-constructive praxis and executive functions (EF), (p<0.05) were found, obtaining better scores in the control group. Significant correlations between the cortisol profile, with false acknowledgments of Rey au...

La toma de decisiones está determinada por el funcionamiento ejecutivo (cognición), así como por ... more La toma de decisiones está determinada por el funcionamiento ejecutivo (cognición), así como por otros elementos a nivel ambiental y emocional como las características de los estímulos que intervienen en la decisión. Sin embargo, hasta el momento, se desconocen estudios que tengan en cuenta tanto los elementos cognitivos, como las características de los estímulos a la hora de tomar una decisión. Objetivo: Esta investigación tuvo como finalidad determinar la influencia de los estímulos publicitarios con contenido sexual en la toma de decisiones, teniendo en cuenta variables neuropsicológicas como el funcionamiento ejecutivo y condiciones experimentales como el orden de presentación de los estímulos. Métodos: Se realizó un estudio cuasi-experimental, con una muestra de 60 sujetos, de género masculino, y edades comprendidas entre los 18 y 35 años de edad, con funciones ejecutivas normales y bajas (medidas a través de protocolos neuropsicológicos validados), a quienes se les mostró una publicidad con y sin estímulos sexuales, presentados en diferente orden. Posteriormente se realizó una encuesta de preferencia de los estímulos. Resultados: Los resultados muestran influencia del estímulo con contenido sexual sobre la toma de decisión en hombres con funcionamiento ejecutivo por debajo de lo esperado, cuando se observa, según el orden, primero el estímulo sin contenido sexual y después el estímulo con contenido sexual. Conclusión: Lo cual sugiere la influencia de las funciones ejecutivas (incluyendo la memoria de trabajo) en la toma de decisiones, ante estímulos con contenido sexual.

Journal of Neuroeducation, 2020

Fuentes de financiación Esta investigación se realizó con recursos financieros propios de los aut... more Fuentes de financiación Esta investigación se realizó con recursos financieros propios de los autores. Las instituciones a través de sus redes facilitaron su difusión entre los docentes. Conflicto de interés Los autores declaran la ausencia de conflicto de interés derivado de este trabajo. Contribuciones de los autores Todos los autores contribuyeron de manera similar en el presente trabajo.

Developmental Neuropsychology, 2020

We compared the performance of children with ADHD and typically developing children on two tempor... more We compared the performance of children with ADHD and typically developing children on two temporal tasks, a bisection task and a reproduction task, in auditory and visual modalities. Children with ADHD presented a larger variability when performing auditory and visual temporal tasks. Moreover, they overestimated the durations in bisection tasks and underproduced duration intervals in the visual reproduction task. In the context of the pacemaker-accumulator model, these results suggest that temporal deficits might result from a dysfunction in the switch and/or memory impairment.

Anuario de Psicología, 2017

Introduction: Diabetes mellitus type 2 (DM2) is a chronic metabolic disease with important reperc... more Introduction: Diabetes mellitus type 2 (DM2) is a chronic metabolic disease with important repercussions in the life of the patients who suffer it. Its metabolic control is essential to reduce morbidity and mortality rates, which depends on physiological, economic, social and psychological factors. The objective of this study was to determine the association between psychological factors and metabolic control of patients with DM2. Materials and methods: The methodological approach was descriptive cross-sectional, with analysis of cases and controls, in a group of 60 participants with diagnosis of DM2, 30 with controlled diabetes (DC) and 30 with uncontrolled diabetes (DNC); defined by the serum levels of glycosylated hemoglobin. Results: Correlational analysis was performed using the Spearman test, to establish the relationship between glycosylated hemoglobin and psychological variables, showing significant correlations of <0.01 for somatic symptoms and <0.05 for depression and family support, for the group with DNC. Discussion: These results suggest that there is a relationship between psychological factors and metabolic control. However, from the clinical point of view, the importance of taking into account depression and somatic symptoms, as comorbid variables, which influence an adequate metabolic control and the decrease of morbidity and mortality in this group of patients is highlighted.

Dementia and Geriatric Cognitive Disorders, 2016

Background: Most studies examining episodic memory in Alzheimer disease (AD) have focused on pati... more Background: Most studies examining episodic memory in Alzheimer disease (AD) have focused on patients' impaired ability to remember information. This approach provides only a partial picture of memory deficits since other factors involved are not considered. Objective: To evaluate the recognition memory performance by using a yes/no procedure to examine the effect of discriminability and response bias measures in amnestic mild cognitive impairment (a-MCI), AD dementia, and normal-aging subjects. Methods: We included 43 controls and 45 a-MCI and 51 mild AD dementia patients. Based on the proportions of correct responses (hits) and false alarms from the Rey Auditory Verbal Learning Test (RAVLT), discriminability (d′) and response bias (C) indices from signal detection theory (SDT) were calculated. Results: Results showed significant group differences for d′ (F (2) = 83.26, p < 0.001), and C (F (2) = 6.05, p = 0.00). The best predictors of group membership were delayed recall an...

Cognitive Neuropsychology, 2021

Children with attention-deficit/hyperactivity disorder (ADHD) present a deficit in inhibitory con... more Children with attention-deficit/hyperactivity disorder (ADHD) present a deficit in inhibitory control. Still, it remains unclear whether it comes from a deficit in reactive inhibition (ability to stop the action in progress), proactive inhibition (ability to exert preparatory control), or both. We compared the performance of 39 children with ADHD and 42 typically developing children performing a Simon choice reaction time task. The Simon task is a conflict task that is well-adapted to dissociate proactive and reactive inhibition. Beyond classical global measures (mean reaction time, accuracy rate, and interference effect), we used more sophisticated dynamic analyses of the interference effect and accuracy rate to investigate reactive inhibition. We studied proactive inhibition through the congruency sequence effect (CSE). Our results showed that children with ADHD had impaired reactive but not proactive inhibition. Moreover, the deficit found in reactive inhibition seems to be due to both a stronger impulse capture and more difficulties in inhibiting impulsive responses. These findings contribute to a better understanding of how ADHD affects inhibitory control in children.

Journal of Applied Cognitive Neuroscience

The world’s population is aging, life expectancy is increasing in the past century as result of t... more The world’s population is aging, life expectancy is increasing in the past century as result of the improvements in healthcare and the people arrive to live longer and healthier. However, this has also resulted in increase the number of people with age-related diseases like most of dementia etiologies (fundamentally Alzheimer and Vascular dementia). The growth of people with dementia in the next 20 years will be exponential around the world but even more in those countries with Low and Medium Incomes (LMIC) due to the recently and future improve in health care and quality of life.

Journal of Applied Cognitive Neuroscience, 2020

In his book The Structure of Science Evolution, Thomas Khum defines a paradigmas “a set of belief... more In his book The Structure of Science Evolution, Thomas Khum defines a paradigmas “a set of beliefs, values and accepted techniques that define the exercise of a scientific discipline”. A new paradigm is a change of vision, a reconstruction of our knowledge in the light of discoveries; in the words of Socratics, “all cognition is a recognition”.

Archives of Clinical Neuropsychology, 2021

Objective Teleneuropsychology (teleNP) could potentially expand access to services for patients w... more Objective Teleneuropsychology (teleNP) could potentially expand access to services for patients who are confined, have limited personal access to healthcare, or live in remote areas. The emergence of the COVID-19 pandemic has significantly increased the use of teleNP for cognitive assessments. The main objective of these recommendations is to identify which procedures can be potentially best adapted to the practice of teleNP in Latin America, and thereby facilitate professional decision-making in the region. Method Steps taken to develop these recommendations included (1) formation of an international working group with representatives from 12 Latin American countries; (2) assessment of rationale, scope, and objectives; (3) formulation of clinical questions; (4) evidence search and selection; (5) evaluation of existing evidence and summary; and (6) formulation of recommendations. Levels of evidence were graded following the Oxford Centre for Evidence-Based Medicine system. Databases...

Journal of Applied Cognitive Neuroscience, 2021

COVID-19 pandemic is the world's greatest public health concern, at the same time with various st... more COVID-19 pandemic is the world's greatest public health concern, at the same time with various stages depending on the regions. At the moment of this Editorial (01/06/21), 170 million people have been confirmed cases, which represents 2% of the population of the entire planet. World Health Organization-WHO estimates that 20% of the population has been infected and the numbers continue to grow (WHO, s.f.). Currently, three of the five countries with the highest number of cases are in

Psicogente, Dec 3, 2023

Objetivo: El propósito de este estudio es establecer los mecanismos de la actividad Bioquímica a ... more Objetivo: El propósito de este estudio es establecer los mecanismos de la actividad Bioquímica a través del Estrés Psicológico que influyen en la enfermedad del vitiligo desde una perspectiva neurocientifica, mediante una revisión sistemática de la literatura de los últimos 5 años. Método: La búsqueda sistemática se llevó a cabo en las bases de datos Scopus, PubMed y Web of Science para identificar los estudios que describan la enfermedad de Vitiligo, el estrés psicológico y la bioquímica del cerebro, se establecieron criterios de inclusión y exclusión para la selección de los artículos, así mismo, se evaluó su calidad y pertinencia. Resultados: La revisión sistemática arrojó 15.503 artículos, 70 fueron preseleccionados de acuerdo a lo informado en el resumen y validados para lectura completa. Para la síntesis narrativa se utilizaron 23 artículos científicos. Conclusión: La enfermedad de vitiligo guarda una estrecha relación con el estrés psicológico y está acompañado de un desequilibrio bioquímico que conduce a un proceso inflamatorio y destructivo de los melanocitos de la piel.

Journal of Applied Cognitive Neuroscience, 2020

Breathing techniques are key components of yoga, meditation and relaxation practices that are w... more Breathing techniques are key components of yoga, meditation and relaxation practices that are well known for reducing anxiety and improving overall well-being. To evaluate the efficacy of breathing techniques in pain and cognitive function. We conducted a literature review searching the main literature databases (medline, lilacs, Cochrane library) including randomized clinical trials. We assessed the risk of bias of the included studies using the methodology proposed by the Cochrane collaboration. In total, we found 16 studies that met the inclusion criteria, with an intermediate or unclear overall risk of bias. When combining the different breathing techniques vs control in the included studies, we found a statistically significant difference in terms of the visual analog scale (Difference of means, random effects; -1.21 [95% CI -1.75 to -0.68]; I2: 95%). Meditation-based breathing techniques would improve pain and cognitive function in patients with a painful entity or healthy v...

Revista de Psicología

El Bullying es un fenómeno social contemporáneo que impacta en múltiples estructuras y contextos ... more El Bullying es un fenómeno social contemporáneo que impacta en múltiples estructuras y contextos sociales. Este estudio tuvo como objetivo establecer la asociación entre funciones ejecutivas (FE), cognición social en adolescentes y el bullying. Estudio descriptivo transversal con una muestra de 109 sujetos seleccionados mediante un muestreo por conveniencia. Se realizó una regresión logística multinomial, encontrando que la cognición social es un factor protector (OR: .17 IC 95% .05-.59) (OR: .27 IC 95% .08- .85) en el grupo de los agresores respecto a los controles; así como en el grupo de víctimas respecto a los controles (OR: .15 IC 95% .05 – .42) (OR: .30 IC 95% (.11- .82). De esta manera, una adecuada cognición social se asocia como un factor protector ante el bullying y el presentar déficits en las FE se asocia a un incremento del riesgo de tres veces de padecerlo.

Biomedicines, 2021

Exosomes are extracellular vesicles released by cells, both constitutively and after cell activat... more Exosomes are extracellular vesicles released by cells, both constitutively and after cell activation, and are present in different types of biological fluid. Exosomes are involved in the pathogenesis of diseases, such as cancer, neurodegenerative diseases, pregnancy disorders and cardiovascular diseases, and have emerged as potential non-invasive biomarkers for the detection, prognosis and therapeutics of a myriad of diseases. In this review, we describe recent advances related to the regulatory mechanisms of exosome biogenesis, release and molecular composition, as well as their role in health and disease, and their potential use as disease biomarkers and therapeutic targets. In addition, the advantages and disadvantages of their main isolation methods, characterization and cargo analysis, as well as the experimental methods used for exosome-mediated drug delivery, are discussed. Finally, we present potential perspectives for the use of exosomes in future clinical practice.

Background: “Forgetfulness” is frequent in normal aging and characteristic of the early stages of... more Background: “Forgetfulness” is frequent in normal aging and characteristic of the early stages of dementia syndromes. The episodic memory test is central for detecting amnestic mild cognitive impairment (MCI). The Memory Binding Test (MBT) is a simple, easy and brief memory test to detect the early stage of episodic memory impairment. Objective: To validate the Argentine version of the MBT in a Latin American population and to estimate the diagnostic accuracy as a tool for early detection of MCI. Methods: 88 subjects (46 healthy controls and 42 patients with amnestic MCI) matched for age and educational level were evaluated by an extensive neuropsychological battery and the memory binding test. Results: A significantly better performance was detected in the control group; all MBT scales were predictive of MCI diagnosis (p<.01). The MBT showed high sensitivity (69%) and high specificity (88%), with a PPV of 93% and a NPV of 55% for associative paired recall. A statistically signif...

Computer Information Systems and Industrial Management, 2020

Disorder Attention Deficit/Hyperactivity Disorder, or ADHD, is recognized as one of the pathologi... more Disorder Attention Deficit/Hyperactivity Disorder, or ADHD, is recognized as one of the pathologies of high prevalence in children and adolescents from the global environment population; this disorder generates visible symptoms usually diminish with the passage of time in adulthood, however they remain concealed by demonstrations damnifican personal stability and human development apt. This article shows the results of the research aimed at determining the prevalence of symptoms of attention deficit hyperactivity disorder in Young Adults University of Barranquilla and its Metropolitan Area. The sample of 1600 young adults between 18 and 25 years, which has been estimated at 95% confidence level and a margin of error of 2.44%. The information was acquired through the application of exploratory instruments symptoms of attention deficit hyperactivity disorder. With the application of the algorithm different machine learning algorithms such as: Bagging, MultiBoostAB, Deci-sionStump, LogitBoost, FT, J48Graft, a high performance in the Bagging algorithm could be identified with the following results in quality metrics: Accuracy 91.67%, Precision 94.12%, Recall 88.89% and F-measure 91.43%.

Actas espanolas de psiquiatria, 2018

OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol le... more OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol levels as a measure of physiological stress in patients with fibromyalgia. METHODOLOGY A sample of 60 women was intentionally selected: 30 with Fibromyalgia diagnosis and 30 with normal controls. Cortisol levels were determined using two blood samples (AM and PM) and a neuropsychological and emotional battery was applied with a standardized protocol in Colombian population to evaluate different cognitive domains. Comparative and correlational non-parametric analyzes were performed, a multiple regression analysis to determine influences between variables. RESULTS Significant differences between the study groups in the neuropsychological variables (attention, memory, language, visual-constructive praxis and executive functions (EF), (p<0.05) were found, obtaining better scores in the control group. Significant correlations between the cortisol profile, with false acknowledgments of Rey au...

Actas espanolas de psiquiatria, 2018

OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol le... more OBJECTIVE To describe the relationship between neuropsychological variables and serum cortisol levels as a measure of physiological stress in patients with fibromyalgia. METHODOLOGY A sample of 60 women was intentionally selected: 30 with Fibromyalgia diagnosis and 30 with normal controls. Cortisol levels were determined using two blood samples (AM and PM) and a neuropsychological and emotional battery was applied with a standardized protocol in Colombian population to evaluate different cognitive domains. Comparative and correlational non-parametric analyzes were performed, a multiple regression analysis to determine influences between variables. RESULTS Significant differences between the study groups in the neuropsychological variables (attention, memory, language, visual-constructive praxis and executive functions (EF), (p<0.05) were found, obtaining better scores in the control group. Significant correlations between the cortisol profile, with false acknowledgments of Rey au...

La toma de decisiones está determinada por el funcionamiento ejecutivo (cognición), así como por ... more La toma de decisiones está determinada por el funcionamiento ejecutivo (cognición), así como por otros elementos a nivel ambiental y emocional como las características de los estímulos que intervienen en la decisión. Sin embargo, hasta el momento, se desconocen estudios que tengan en cuenta tanto los elementos cognitivos, como las características de los estímulos a la hora de tomar una decisión. Objetivo: Esta investigación tuvo como finalidad determinar la influencia de los estímulos publicitarios con contenido sexual en la toma de decisiones, teniendo en cuenta variables neuropsicológicas como el funcionamiento ejecutivo y condiciones experimentales como el orden de presentación de los estímulos. Métodos: Se realizó un estudio cuasi-experimental, con una muestra de 60 sujetos, de género masculino, y edades comprendidas entre los 18 y 35 años de edad, con funciones ejecutivas normales y bajas (medidas a través de protocolos neuropsicológicos validados), a quienes se les mostró una publicidad con y sin estímulos sexuales, presentados en diferente orden. Posteriormente se realizó una encuesta de preferencia de los estímulos. Resultados: Los resultados muestran influencia del estímulo con contenido sexual sobre la toma de decisión en hombres con funcionamiento ejecutivo por debajo de lo esperado, cuando se observa, según el orden, primero el estímulo sin contenido sexual y después el estímulo con contenido sexual. Conclusión: Lo cual sugiere la influencia de las funciones ejecutivas (incluyendo la memoria de trabajo) en la toma de decisiones, ante estímulos con contenido sexual.

Journal of Neuroeducation, 2020

Fuentes de financiación Esta investigación se realizó con recursos financieros propios de los aut... more Fuentes de financiación Esta investigación se realizó con recursos financieros propios de los autores. Las instituciones a través de sus redes facilitaron su difusión entre los docentes. Conflicto de interés Los autores declaran la ausencia de conflicto de interés derivado de este trabajo. Contribuciones de los autores Todos los autores contribuyeron de manera similar en el presente trabajo.

Developmental Neuropsychology, 2020

We compared the performance of children with ADHD and typically developing children on two tempor... more We compared the performance of children with ADHD and typically developing children on two temporal tasks, a bisection task and a reproduction task, in auditory and visual modalities. Children with ADHD presented a larger variability when performing auditory and visual temporal tasks. Moreover, they overestimated the durations in bisection tasks and underproduced duration intervals in the visual reproduction task. In the context of the pacemaker-accumulator model, these results suggest that temporal deficits might result from a dysfunction in the switch and/or memory impairment.

Anuario de Psicología, 2017

Introduction: Diabetes mellitus type 2 (DM2) is a chronic metabolic disease with important reperc... more Introduction: Diabetes mellitus type 2 (DM2) is a chronic metabolic disease with important repercussions in the life of the patients who suffer it. Its metabolic control is essential to reduce morbidity and mortality rates, which depends on physiological, economic, social and psychological factors. The objective of this study was to determine the association between psychological factors and metabolic control of patients with DM2. Materials and methods: The methodological approach was descriptive cross-sectional, with analysis of cases and controls, in a group of 60 participants with diagnosis of DM2, 30 with controlled diabetes (DC) and 30 with uncontrolled diabetes (DNC); defined by the serum levels of glycosylated hemoglobin. Results: Correlational analysis was performed using the Spearman test, to establish the relationship between glycosylated hemoglobin and psychological variables, showing significant correlations of <0.01 for somatic symptoms and <0.05 for depression and family support, for the group with DNC. Discussion: These results suggest that there is a relationship between psychological factors and metabolic control. However, from the clinical point of view, the importance of taking into account depression and somatic symptoms, as comorbid variables, which influence an adequate metabolic control and the decrease of morbidity and mortality in this group of patients is highlighted.

Dementia and Geriatric Cognitive Disorders, 2016

Background: Most studies examining episodic memory in Alzheimer disease (AD) have focused on pati... more Background: Most studies examining episodic memory in Alzheimer disease (AD) have focused on patients' impaired ability to remember information. This approach provides only a partial picture of memory deficits since other factors involved are not considered. Objective: To evaluate the recognition memory performance by using a yes/no procedure to examine the effect of discriminability and response bias measures in amnestic mild cognitive impairment (a-MCI), AD dementia, and normal-aging subjects. Methods: We included 43 controls and 45 a-MCI and 51 mild AD dementia patients. Based on the proportions of correct responses (hits) and false alarms from the Rey Auditory Verbal Learning Test (RAVLT), discriminability (d′) and response bias (C) indices from signal detection theory (SDT) were calculated. Results: Results showed significant group differences for d′ (F (2) = 83.26, p < 0.001), and C (F (2) = 6.05, p = 0.00). The best predictors of group membership were delayed recall an...