Fast recognition of social emotions takes the whole brain: Interhemispheric cooperation in the absence of cerebral asymmetry

NEUROPSYCHOLOGIA

卷:45

Review

Tamietto, Marco ; Adenzato, Mauro ; Geminiani, Giuliano ; de Gelder, Beatrice

关键词: social cognition;    face perception;    hemispheric laterality;    redundant target effect;    bilateral gain;    flirtatiousness;    arrogance;   

DOI  :  10.1016/j.neuropsychologia.2006.08.012

来源: Elsevier

【 摘 要 】

Hemispheric asymmetry in emotional perception has been traditionally studied for basic emotions and very little is known about laterality for more complex social emotions. Here, we used the redundant target paradigm to investigate interhemispheric asymmetry and cooperation for two social emotions in healthy subjects. Facial expressions of flirtatiousness or arrogance were briefly presented either unilaterally in the left (LVF) or right visual field (RVF), or simultaneously to both visual fields (BVF) while participants responded to the target expression (flirtatious or arrogant, counterbalanced between blocks). In bilateral conditions the faces could show the same emotion (congruent condition) or two different expressions (incongruent condition). No difference between unilateral presentations was found, suggesting that the perception of social emotions is not hemispherically lateralized. Responses were faster and more accurate in bilateral displays with two emotionally congruent but physically different faces (i.e., a male and a female expressing the same emotion) than in unilateral conditions. This redundant target effect was consistent with a neural summation model, thereby showing that interhemispheric cooperation may occur for social emotions despite major perceptual differences between faces posing the same expression. (c) 2006 Elsevier Ltd. All rights reserved.

【 授权许可】

Free