John Shea - Academia.edu (original) (raw)
Papers by John Shea
Perceptual and Motor Skills, Jan 19, 2018
Providing the learner control over aspects of practice has improved the process of motor skill ac... more Providing the learner control over aspects of practice has improved the process of motor skill acquisition, and self-controlled knowledge of results (KR) schedules have shown specific advantages over externally controlled ones. A possible explanation is that self-controlled KR schedules lead learners to more active task involvement, permitting deeper information processing. This study tested this explanatory hypothesis. Thirty undergraduate volunteers of both sexes, aged 18 to 35, all novices in the task, practiced transporting a tennis ball in a specified sequence within a time goal. We compared a high-involvement group (involvement yoked, IY), notified in advance about upcoming KR trials, to self-controlled KR (SC) and yoked KR (YK) groups. The experiment consisted of three phases: acquisition, retention, and transfer. We found both IY and SC groups to be superior to YK for transfer of learning. Postexperiment participant questionnaires confirmed a preference for receiving KR after learnerperceived good trials, even though performance on those trials did not differ from performance on trials without KR. Equivalent IY and SC performances provide support for the benefits of task involvement and deeper information processing when KR is self-controlled in motor skill acquisition.
Perceptual and motor skills, 2015
-The theoretical explanations used to explain changes in performance during motor imagery and phy... more -The theoretical explanations used to explain changes in performance during motor imagery and physical practice conditions are inconsistent when memory retrieval is and is not required. This study measured performance time and workload during acquisition, a retention test requiring memory retrieval, and a retention test not requiring memory retrieval using a key-pressing task. The participants were assigned to physical practice with or without instructions to learn or motor imagery with or without instructions to learn. A diagram of the keys was presented during the practice trials and the first retention test, but was not presented during the second test. The results revealed no effect for the learning instructions or performance changes during the practice phases. However, during both retention tests participants in the physical practice conditions performed significantly faster than those in the motor imagery conditions. Also, higher levels of workload were reported for the motor imagery conditions when the retention test required memory retrieval compared to the other phases. A discussion of the implications of workload on performance is presented with respect to varying practice conditions.
Scientific Reports, 2021
This study examined how people choose their path to a target, and the visual information they use... more This study examined how people choose their path to a target, and the visual information they use for path planning. Participants avoided stepping outside an avoidance margin between a stationary obstacle and the edge of a walkway as they walked to a bookcase and picked up a target from different locations on a shelf. We provided an integrated explanation for path selection by combining avoidance margin, deviation angle, and distance to the obstacle. We found that the combination of right and left avoidance margins accounted for 26%, deviation angle accounted for 39%, and distance to the obstacle accounted for 35% of the variability in decisions about the direction taken to circumvent an obstacle on the way to a target. Gaze analysis findings showed that participants directed their gaze to minimize the uncertainty involved in successful task performance and that gaze sequence changed with obstacle location. In some cases, participants chose to circumvent the obstacle on a side for w...
This study examined how people choose their path to a target, and the visual information they use... more This study examined how people choose their path to a target, and the visual information they use for path planning. Participants avoided making contact with an obstacle as they walked to a bookcase and picked up a cup from different locations on a shelf. Participants chose a path with a smaller deviation angle from a straight line to the target and chose a side of the obstacle which was closer to them. Unlike previous studies which have not included a safety margin in their analyses, we found that the right and left safety margins combined to account for 26% of the variability in path planning decision making. In some cases, participants chose a longer path around the obstacle even when the available safety margin which would have resulted in a straight line to the target was large enough to allow passage. Gaze analysis findings showed that participants directed their gaze to minimize the uncertainty involved in successful task performance and that gaze sequence changed with obstac...
Journal of Motor Behavior, 1976
Earlier studies of knowledge of results delay in positioning responses have required subjects to ... more Earlier studies of knowledge of results delay in positioning responses have required subjects to move "briskly" to the target position, creating a potential bias in the interpretation of the results for recall and recognition memory mechanisms. The present experiment varied delay (2 or 30 sec) in two groups of 20 females. Subjects were instructed to move very slowly and the starting positions were varied to prevent pre-programmed movements of a given extent. Even with these methodological changes, there was no evidence that the delay variable was relevant for learning in positioning responses.
Perceptual and Motor Skills, 2014
The effects of mental practice in novices were investigated. University students ( N = 60) perfor... more The effects of mental practice in novices were investigated. University students ( N = 60) performed a serial aiming task, distributed in 5 groups of 12: mental practice, physical practice, mental-physical practice (first mental then physical practice), physical-mental practice (first physical then mental practice), and a control group that only performed the tests. Participants transported three tennis balls among six containers in a pre-established sequence in a target time. In the acquisition phase and retention test (24 hr. later), the task was the same; in the transfer test, 5 min. after the acquisition phase, sequence and time changed. Six trials were performed in the acquisition phase, and each test consisted of 9 trials. The performance measures were absolute error, constant error, and variable error; a t test and a two-way ANOVA were used to compare the acquisition phase and tests, respectively. Physical practice and both groups of combined conditions presented better perfo...
Research Quarterly for Exercise and Sport, 1988
L ee and Genovese (1988) provided yet anotherattempt to reduce the complexities of psychological ... more L ee and Genovese (1988) provided yet anotherattempt to reduce the complexities of psychological phenomena to somerestricted generalization (i. e., that
Journal of Experimental Psychology: …, 1979
This study was based on Battig's conceptualization that increased contextual interference du... more This study was based on Battig's conceptualization that increased contextual interference during skill acquisition can lead to improved retention or transfer, especially under changed contextual conditions. Subjects learned three motor tasks under a blocked (low interference) or ...
Experimental Brain Research
Experimental Brain Research
International Journal of Environmental Research and Public Health
This cross-sectional study investigated the interactive dual-task (DT) effects of executive funct... more This cross-sectional study investigated the interactive dual-task (DT) effects of executive function demands and environmental constraints on older adults’ walking and the moderating role of habitual physical activity (PA). Locomotor performance under different environmental constraints (flat versus obstructed walking) and cognitive performance with different executive function involvement (backward counting versus random number generation) were assessed under single-task (ST) and DT conditions in 135 participants (mean age 68.1 ± 8.4). The weekly number of daily steps was measured. Reciprocal DT effects of walking on cognitive performance and of the cognitive task on gait performance were computed and submitted to analyses of covariance with age, PA level, and cognitive functioning as covariates, followed by linear regressions with PA level as predictor. Cognitive task demands and environmental constraints individually and jointly affected gait variability (p = 0.033, ηp2 = 0.08) a...
Journal of Experimental Psychology: Human Learning & Memory
ABSTRACT
Gait & posture, Oct 18, 2017
Gait adaptability is essential for fall avoidance during locomotion. It requires the ability to r... more Gait adaptability is essential for fall avoidance during locomotion. It requires the ability to rapidly inhibit original motor planning, select and execute alternative motor commands, while also maintaining the stability of locomotion. This study investigated the aging effect on gait adaptability and dynamic stability control during a visually perturbed gait initiation task. A novel approach was used such that the anticipatory postural adjustment (APA) during gait initiation were used to trigger the unpredictable relocation of a foot-size stepping target. Participants (10 young adults and 10 older adults) completed visually perturbed gait initiation in three adjustment timing conditions (early, intermediate, late; all extracted from the stereotypical APA pattern) and two adjustment direction conditions (medial, lateral). Stepping accuracy, foot rotation at landing, and Margin of Dynamic Stability (MDS) were analyzed and compared across test conditions and groups using a linear mixed...
Frontiers in human neuroscience, 2017
The purpose of this study was to investigate whether physical activity (PA) habits may positively... more The purpose of this study was to investigate whether physical activity (PA) habits may positively impact performance of the orienting and executive control networks in community-dwelling aging individuals and diabetics, who are at risk of cognitive dysfunction. To this aim, we tested cross-sectionally whether age, ranging from late middle-age to old adulthood, and PA level independently or interactively predict different facets of the attentional performance. Hundred and thirty female and male individuals and 22 adults with type 2 diabetes aged 55-84 years were recruited and their daily PA (steps) was objectively measured by means of armband monitors. Participants performed a multifunctional attentional go/no-go reaction time (RT) task in which spatial attention was cued by means of informative direct cues of different sizes followed by compound stimuli with local and global target features. The performance efficiency of the orienting networks was estimated by computing RT differenc...
Advances in Psychology, 1988
Page 307. Complex Movement Behaviour:'The'motor-action controversy, pp. 289-314 OG Meij... more Page 307. Complex Movement Behaviour:'The'motor-action controversy, pp. 289-314 OG Meijer & K. Roth (editors) © Elsevier Science Publishers BV (North-Holland), 1988 Chapter 12 KNOWLEDGE INCORPORATION IN MOTOR ...
Http Dx Doi Org 10 1080 00222890209601953, Apr 1, 2010
The effects of practice schedule and amount of practice on the development of the generalized mot... more The effects of practice schedule and amount of practice on the development of the generalized motor program (GMP) and on parameter estimation were investigated. Participants (N = 108) practiced the same relative timing but different absolute durations of a multisegment timing task. Practice schedules (constant, blocked, or serial) were crossed with amounts of practice (low and high). Inclusion of a constant practice condition allowed the authors to investigate the variability of practice prediction. Participants practiced the same proportional durations in a serial or a blocked schedule, which enabled the authors to examine contextual interference. A constant practice schedule enhanced GMP performance when task parameters remained the same, but varied practice schedules were beneficial when task parameters changed. A serial as opposed to a blocked practice schedule was superior when the performance of a task governed by a different GMP was required. Increased practice led to a consolidated task representation that was unavailable for updating.
Http Dx Doi Org 10 1080 02701367 1991 10608726, Feb 26, 2013
Recent research (Lee & Weeks, 1987; Weeks, Lee, & Elliott, 1987) investigating th... more Recent research (Lee & Weeks, 1987; Weeks, Lee, & Elliott, 1987) investigating the processes responsible for the contextual interference phenomenon has used a modified short-term motor retention paradigm to support the reconstruction explanation (Lee & Magill, 1985; Magill, 1989; Magill & Hall, 1990). The present experiment was an extension of these experiments in which forgetting of an acquisition task was induced through performance of either a similar or dissimilar distractor task during the intertrial interval. The effects of an extra practice trial with the acquisition task as well as no activity during the intertrial interval were also investigated. In addition, forgetting of the acquisition task was assessed prior to a reconstruction trial, which immediately preceded a 2-min filled retention interval. Both similar and dissimilar distractor tasks caused equivalent amounts of forgetting of the acquisition task prior to the reconstruction trial. However, retention of the acquisition task was significantly improved if its reconstruction occurred following forgetting due to interference from performance of a similar distractor task. These findings suggest forgetting and subsequent reconstruction alone are not sufficient for improved retention. These processes must occur in the context of a similar task for improved retention.
Perceptual and Motor Skills, 2000
The effect of smoking abstinence on performance of a reciprocal tapping task was investigated. 6 ... more The effect of smoking abstinence on performance of a reciprocal tapping task was investigated. 6 habitual smokers performed a single-plate and two versions of a two-plate tapping task. Fitts' Law was used to compute an index of difficulty (ID) in bits for the tasks which was 0 bits for the single-plate and 3.32 and 4.17 bits for the two-plate versions of the task. While smoking abstinence had no effect on performance of the single-plate tapping task, it increased movement time on performance of both two-plate task versions. These findings may provide a coherent explanation for the prior findings of nicotine deprivation on psychomotor performance in the literature. This explanation suggests that the effects of nicotine deprivation as incurred through smoking abstinence may be on the central mechanisms regulating information-processing rate for successful movement regulation. Thus nicotine deprivation may not affect performance of simple psychomotor tasks which require minimal information processing but will affect the performance of more complex tasks requiring significantly more information processing for successful movement regulation.
Experimental brain research, Jan 26, 2015
The present study investigated the attention allocation during reactive stepping using a continuo... more The present study investigated the attention allocation during reactive stepping using a continuous finger-tapping task. Ten healthy young subjects were recruited to participate in this study. Subjects were required to perform a rapid voluntary step with either left or right leg after hearing an auditory tone while tapping their right index finger on a handhold numeric keypad. Step initiation conditions included simple and choice reaction forward stepping with three variants of continuous tapping task that were: (1) single task-no concurrent finger-tapping task; (2) dual task easy-one-button tapping task; (3) dual task hard-four-button tapping task. Types of anticipatory postural adjustment (APA) were determined by the center of pressure trajectory. Reaction time, APA duration, and stepping latency were compared between APA types and various dual-task conditions. Wavelet analysis was performed on the stimulus-locked finger-tapping data to determine the frequency change of tapping sp...
Advances in Psychology, 1988
Perceptual and Motor Skills, Jan 19, 2018
Providing the learner control over aspects of practice has improved the process of motor skill ac... more Providing the learner control over aspects of practice has improved the process of motor skill acquisition, and self-controlled knowledge of results (KR) schedules have shown specific advantages over externally controlled ones. A possible explanation is that self-controlled KR schedules lead learners to more active task involvement, permitting deeper information processing. This study tested this explanatory hypothesis. Thirty undergraduate volunteers of both sexes, aged 18 to 35, all novices in the task, practiced transporting a tennis ball in a specified sequence within a time goal. We compared a high-involvement group (involvement yoked, IY), notified in advance about upcoming KR trials, to self-controlled KR (SC) and yoked KR (YK) groups. The experiment consisted of three phases: acquisition, retention, and transfer. We found both IY and SC groups to be superior to YK for transfer of learning. Postexperiment participant questionnaires confirmed a preference for receiving KR after learnerperceived good trials, even though performance on those trials did not differ from performance on trials without KR. Equivalent IY and SC performances provide support for the benefits of task involvement and deeper information processing when KR is self-controlled in motor skill acquisition.
Perceptual and motor skills, 2015
-The theoretical explanations used to explain changes in performance during motor imagery and phy... more -The theoretical explanations used to explain changes in performance during motor imagery and physical practice conditions are inconsistent when memory retrieval is and is not required. This study measured performance time and workload during acquisition, a retention test requiring memory retrieval, and a retention test not requiring memory retrieval using a key-pressing task. The participants were assigned to physical practice with or without instructions to learn or motor imagery with or without instructions to learn. A diagram of the keys was presented during the practice trials and the first retention test, but was not presented during the second test. The results revealed no effect for the learning instructions or performance changes during the practice phases. However, during both retention tests participants in the physical practice conditions performed significantly faster than those in the motor imagery conditions. Also, higher levels of workload were reported for the motor imagery conditions when the retention test required memory retrieval compared to the other phases. A discussion of the implications of workload on performance is presented with respect to varying practice conditions.
Scientific Reports, 2021
This study examined how people choose their path to a target, and the visual information they use... more This study examined how people choose their path to a target, and the visual information they use for path planning. Participants avoided stepping outside an avoidance margin between a stationary obstacle and the edge of a walkway as they walked to a bookcase and picked up a target from different locations on a shelf. We provided an integrated explanation for path selection by combining avoidance margin, deviation angle, and distance to the obstacle. We found that the combination of right and left avoidance margins accounted for 26%, deviation angle accounted for 39%, and distance to the obstacle accounted for 35% of the variability in decisions about the direction taken to circumvent an obstacle on the way to a target. Gaze analysis findings showed that participants directed their gaze to minimize the uncertainty involved in successful task performance and that gaze sequence changed with obstacle location. In some cases, participants chose to circumvent the obstacle on a side for w...
This study examined how people choose their path to a target, and the visual information they use... more This study examined how people choose their path to a target, and the visual information they use for path planning. Participants avoided making contact with an obstacle as they walked to a bookcase and picked up a cup from different locations on a shelf. Participants chose a path with a smaller deviation angle from a straight line to the target and chose a side of the obstacle which was closer to them. Unlike previous studies which have not included a safety margin in their analyses, we found that the right and left safety margins combined to account for 26% of the variability in path planning decision making. In some cases, participants chose a longer path around the obstacle even when the available safety margin which would have resulted in a straight line to the target was large enough to allow passage. Gaze analysis findings showed that participants directed their gaze to minimize the uncertainty involved in successful task performance and that gaze sequence changed with obstac...
Journal of Motor Behavior, 1976
Earlier studies of knowledge of results delay in positioning responses have required subjects to ... more Earlier studies of knowledge of results delay in positioning responses have required subjects to move "briskly" to the target position, creating a potential bias in the interpretation of the results for recall and recognition memory mechanisms. The present experiment varied delay (2 or 30 sec) in two groups of 20 females. Subjects were instructed to move very slowly and the starting positions were varied to prevent pre-programmed movements of a given extent. Even with these methodological changes, there was no evidence that the delay variable was relevant for learning in positioning responses.
Perceptual and Motor Skills, 2014
The effects of mental practice in novices were investigated. University students ( N = 60) perfor... more The effects of mental practice in novices were investigated. University students ( N = 60) performed a serial aiming task, distributed in 5 groups of 12: mental practice, physical practice, mental-physical practice (first mental then physical practice), physical-mental practice (first physical then mental practice), and a control group that only performed the tests. Participants transported three tennis balls among six containers in a pre-established sequence in a target time. In the acquisition phase and retention test (24 hr. later), the task was the same; in the transfer test, 5 min. after the acquisition phase, sequence and time changed. Six trials were performed in the acquisition phase, and each test consisted of 9 trials. The performance measures were absolute error, constant error, and variable error; a t test and a two-way ANOVA were used to compare the acquisition phase and tests, respectively. Physical practice and both groups of combined conditions presented better perfo...
Research Quarterly for Exercise and Sport, 1988
L ee and Genovese (1988) provided yet anotherattempt to reduce the complexities of psychological ... more L ee and Genovese (1988) provided yet anotherattempt to reduce the complexities of psychological phenomena to somerestricted generalization (i. e., that
Journal of Experimental Psychology: …, 1979
This study was based on Battig's conceptualization that increased contextual interference du... more This study was based on Battig's conceptualization that increased contextual interference during skill acquisition can lead to improved retention or transfer, especially under changed contextual conditions. Subjects learned three motor tasks under a blocked (low interference) or ...
Experimental Brain Research
Experimental Brain Research
International Journal of Environmental Research and Public Health
This cross-sectional study investigated the interactive dual-task (DT) effects of executive funct... more This cross-sectional study investigated the interactive dual-task (DT) effects of executive function demands and environmental constraints on older adults’ walking and the moderating role of habitual physical activity (PA). Locomotor performance under different environmental constraints (flat versus obstructed walking) and cognitive performance with different executive function involvement (backward counting versus random number generation) were assessed under single-task (ST) and DT conditions in 135 participants (mean age 68.1 ± 8.4). The weekly number of daily steps was measured. Reciprocal DT effects of walking on cognitive performance and of the cognitive task on gait performance were computed and submitted to analyses of covariance with age, PA level, and cognitive functioning as covariates, followed by linear regressions with PA level as predictor. Cognitive task demands and environmental constraints individually and jointly affected gait variability (p = 0.033, ηp2 = 0.08) a...
Journal of Experimental Psychology: Human Learning & Memory
ABSTRACT
Gait & posture, Oct 18, 2017
Gait adaptability is essential for fall avoidance during locomotion. It requires the ability to r... more Gait adaptability is essential for fall avoidance during locomotion. It requires the ability to rapidly inhibit original motor planning, select and execute alternative motor commands, while also maintaining the stability of locomotion. This study investigated the aging effect on gait adaptability and dynamic stability control during a visually perturbed gait initiation task. A novel approach was used such that the anticipatory postural adjustment (APA) during gait initiation were used to trigger the unpredictable relocation of a foot-size stepping target. Participants (10 young adults and 10 older adults) completed visually perturbed gait initiation in three adjustment timing conditions (early, intermediate, late; all extracted from the stereotypical APA pattern) and two adjustment direction conditions (medial, lateral). Stepping accuracy, foot rotation at landing, and Margin of Dynamic Stability (MDS) were analyzed and compared across test conditions and groups using a linear mixed...
Frontiers in human neuroscience, 2017
The purpose of this study was to investigate whether physical activity (PA) habits may positively... more The purpose of this study was to investigate whether physical activity (PA) habits may positively impact performance of the orienting and executive control networks in community-dwelling aging individuals and diabetics, who are at risk of cognitive dysfunction. To this aim, we tested cross-sectionally whether age, ranging from late middle-age to old adulthood, and PA level independently or interactively predict different facets of the attentional performance. Hundred and thirty female and male individuals and 22 adults with type 2 diabetes aged 55-84 years were recruited and their daily PA (steps) was objectively measured by means of armband monitors. Participants performed a multifunctional attentional go/no-go reaction time (RT) task in which spatial attention was cued by means of informative direct cues of different sizes followed by compound stimuli with local and global target features. The performance efficiency of the orienting networks was estimated by computing RT differenc...
Advances in Psychology, 1988
Page 307. Complex Movement Behaviour:'The'motor-action controversy, pp. 289-314 OG Meij... more Page 307. Complex Movement Behaviour:'The'motor-action controversy, pp. 289-314 OG Meijer & K. Roth (editors) © Elsevier Science Publishers BV (North-Holland), 1988 Chapter 12 KNOWLEDGE INCORPORATION IN MOTOR ...
Http Dx Doi Org 10 1080 00222890209601953, Apr 1, 2010
The effects of practice schedule and amount of practice on the development of the generalized mot... more The effects of practice schedule and amount of practice on the development of the generalized motor program (GMP) and on parameter estimation were investigated. Participants (N = 108) practiced the same relative timing but different absolute durations of a multisegment timing task. Practice schedules (constant, blocked, or serial) were crossed with amounts of practice (low and high). Inclusion of a constant practice condition allowed the authors to investigate the variability of practice prediction. Participants practiced the same proportional durations in a serial or a blocked schedule, which enabled the authors to examine contextual interference. A constant practice schedule enhanced GMP performance when task parameters remained the same, but varied practice schedules were beneficial when task parameters changed. A serial as opposed to a blocked practice schedule was superior when the performance of a task governed by a different GMP was required. Increased practice led to a consolidated task representation that was unavailable for updating.
Http Dx Doi Org 10 1080 02701367 1991 10608726, Feb 26, 2013
Recent research (Lee & Weeks, 1987; Weeks, Lee, & Elliott, 1987) investigating th... more Recent research (Lee & Weeks, 1987; Weeks, Lee, & Elliott, 1987) investigating the processes responsible for the contextual interference phenomenon has used a modified short-term motor retention paradigm to support the reconstruction explanation (Lee & Magill, 1985; Magill, 1989; Magill & Hall, 1990). The present experiment was an extension of these experiments in which forgetting of an acquisition task was induced through performance of either a similar or dissimilar distractor task during the intertrial interval. The effects of an extra practice trial with the acquisition task as well as no activity during the intertrial interval were also investigated. In addition, forgetting of the acquisition task was assessed prior to a reconstruction trial, which immediately preceded a 2-min filled retention interval. Both similar and dissimilar distractor tasks caused equivalent amounts of forgetting of the acquisition task prior to the reconstruction trial. However, retention of the acquisition task was significantly improved if its reconstruction occurred following forgetting due to interference from performance of a similar distractor task. These findings suggest forgetting and subsequent reconstruction alone are not sufficient for improved retention. These processes must occur in the context of a similar task for improved retention.
Perceptual and Motor Skills, 2000
The effect of smoking abstinence on performance of a reciprocal tapping task was investigated. 6 ... more The effect of smoking abstinence on performance of a reciprocal tapping task was investigated. 6 habitual smokers performed a single-plate and two versions of a two-plate tapping task. Fitts' Law was used to compute an index of difficulty (ID) in bits for the tasks which was 0 bits for the single-plate and 3.32 and 4.17 bits for the two-plate versions of the task. While smoking abstinence had no effect on performance of the single-plate tapping task, it increased movement time on performance of both two-plate task versions. These findings may provide a coherent explanation for the prior findings of nicotine deprivation on psychomotor performance in the literature. This explanation suggests that the effects of nicotine deprivation as incurred through smoking abstinence may be on the central mechanisms regulating information-processing rate for successful movement regulation. Thus nicotine deprivation may not affect performance of simple psychomotor tasks which require minimal information processing but will affect the performance of more complex tasks requiring significantly more information processing for successful movement regulation.
Experimental brain research, Jan 26, 2015
The present study investigated the attention allocation during reactive stepping using a continuo... more The present study investigated the attention allocation during reactive stepping using a continuous finger-tapping task. Ten healthy young subjects were recruited to participate in this study. Subjects were required to perform a rapid voluntary step with either left or right leg after hearing an auditory tone while tapping their right index finger on a handhold numeric keypad. Step initiation conditions included simple and choice reaction forward stepping with three variants of continuous tapping task that were: (1) single task-no concurrent finger-tapping task; (2) dual task easy-one-button tapping task; (3) dual task hard-four-button tapping task. Types of anticipatory postural adjustment (APA) were determined by the center of pressure trajectory. Reaction time, APA duration, and stepping latency were compared between APA types and various dual-task conditions. Wavelet analysis was performed on the stimulus-locked finger-tapping data to determine the frequency change of tapping sp...
Advances in Psychology, 1988