DAVID MENDOZA BELTRAN - Academia.edu (original) (raw)

Papers by DAVID MENDOZA BELTRAN

Research paper thumbnail of Regional accents modulate perspective in geographical space

Psychological Research, 2021

In this study, participants listened to first-person statements that mentioned a character who wa... more In this study, participants listened to first-person statements that mentioned a character who was approaching a geographical location close to (Tenerife, Canary Islands) or distant from the participant (Madrid, Spanish peninsula), pronounced with either the participants' local or a distal regional accent. Participants more often judged approaching statements as coherent when they refer to a close place pronounced with local accent or refer to a distant place with distal accent, rather than when they refer to a close place with distal accent or to a distant place with local accent. These results strongly suggest that the local accent induces listeners to keep their own geographical perspective, whereas the distal accent determines shifting to another’s perspective. In sum, a subtle paralinguistic cue, the speaker’s regional accent, modulates the participants’ geographic perspective when they listen to identical first-person sentences with approaching deictic verbs.

Research paper thumbnail of Brain lateralization of holistic versus analytic processing of emotional facial expressions

NeuroImage, 2014

This study investigated the neurocognitive mechanisms underlying the role of the eye and the mout... more This study investigated the neurocognitive mechanisms underlying the role of the eye and the mouth regions in the recognition of facial happiness, anger, and surprise. To this end, face stimuli were shown in three formats (whole face, upper half visible, and lower half visible) and behavioral categorization, computational modeling, and ERP (event-related potentials) measures were combined. N170 (150-180 ms post-stimulus; right hemisphere) and EPN (early posterior negativity; 200-300 ms; mainly, right hemisphere) were modulated by expression of whole faces, but not by separate halves. This suggests that expression encoding (N170) and emotional assessment (EPN) require holistic processing, mainly in the right hemisphere. In contrast, the mouth region of happy faces enhanced left temporo-occipital activity (150-180 ms), and also the LPC (late positive complex; centro-parietal) activity (350-450 ms) earlier than the angry eyes (450-600 ms) or other face regions. Relatedly, computational modeling revealed that the mouth region of happy faces was also visually salient by 150 ms following stimulus onset. This suggests that analytical or part-based processing of the salient smile occurs early (150-180 ms) and lateralized (left), and is subsequently used as a shortcut to identify the expression of happiness (350-450 ms). This would account for the happy face advantage in behavioral recognition tasks when the smile is visible.

Research paper thumbnail of Alternating Exchange in Ferrimagnetic Ising Chains

Le Journal de Physique Colloques, 1988

We propose a general treatment for solving J-alternating ferrimagnetic Ising chains, made up of t... more We propose a general treatment for solving J-alternating ferrimagnetic Ising chains, made up of two spin sublattices (s, S). Exact expressions of the susceptibility are derived for s = 112 spins alternating with arbitrary Squantum spins, including a local anisotropy on the second sublattice, Db. The magnetic properties of the ordered bimetallic chain MnCo (EDTA), 6H20 is discussed on the basis of the developed model.

Research paper thumbnail of Regional accents modulate perspective in geographical space

Psychological Research, 2021

In this study, participants listened to first-person statements that mentioned a character who wa... more In this study, participants listened to first-person statements that mentioned a character who was approaching a geographical location close to (Tenerife, Canary Islands) or distant from the participant (Madrid, Spanish peninsula), pronounced with either the participants' local or a distal regional accent. Participants more often judged approaching statements as coherent when they refer to a close place pronounced with local accent or refer to a distant place with distal accent, rather than when they refer to a close place with distal accent or to a distant place with local accent. These results strongly suggest that the local accent induces listeners to keep their own geographical perspective, whereas the distal accent determines shifting to another’s perspective. In sum, a subtle paralinguistic cue, the speaker’s regional accent, modulates the participants’ geographic perspective when they listen to identical first-person sentences with approaching deictic verbs.

Research paper thumbnail of Brain lateralization of holistic versus analytic processing of emotional facial expressions

NeuroImage, 2014

This study investigated the neurocognitive mechanisms underlying the role of the eye and the mout... more This study investigated the neurocognitive mechanisms underlying the role of the eye and the mouth regions in the recognition of facial happiness, anger, and surprise. To this end, face stimuli were shown in three formats (whole face, upper half visible, and lower half visible) and behavioral categorization, computational modeling, and ERP (event-related potentials) measures were combined. N170 (150-180 ms post-stimulus; right hemisphere) and EPN (early posterior negativity; 200-300 ms; mainly, right hemisphere) were modulated by expression of whole faces, but not by separate halves. This suggests that expression encoding (N170) and emotional assessment (EPN) require holistic processing, mainly in the right hemisphere. In contrast, the mouth region of happy faces enhanced left temporo-occipital activity (150-180 ms), and also the LPC (late positive complex; centro-parietal) activity (350-450 ms) earlier than the angry eyes (450-600 ms) or other face regions. Relatedly, computational modeling revealed that the mouth region of happy faces was also visually salient by 150 ms following stimulus onset. This suggests that analytical or part-based processing of the salient smile occurs early (150-180 ms) and lateralized (left), and is subsequently used as a shortcut to identify the expression of happiness (350-450 ms). This would account for the happy face advantage in behavioral recognition tasks when the smile is visible.

Research paper thumbnail of Alternating Exchange in Ferrimagnetic Ising Chains

Le Journal de Physique Colloques, 1988

We propose a general treatment for solving J-alternating ferrimagnetic Ising chains, made up of t... more We propose a general treatment for solving J-alternating ferrimagnetic Ising chains, made up of two spin sublattices (s, S). Exact expressions of the susceptibility are derived for s = 112 spins alternating with arbitrary Squantum spins, including a local anisotropy on the second sublattice, Db. The magnetic properties of the ordered bimetallic chain MnCo (EDTA), 6H20 is discussed on the basis of the developed model.