fr
Article scientifique
Accès libre
Anglais

Multimodal emotion perception after anterior temporal lobectomy (ATL)

Publié dansFrontiers in human neuroscience, vol. 8, 275
Date de publication2014
Résumé

In the context of emotion information processing, several studies have demonstrated the involvement of the amygdala in emotion perception, for unimodal and multimodal stimuli. However, it seems that not only the amygdala, but several regions around it, may also play a major role in multimodal emotional integration. In order to investigate the contribution of these regions to multimodal emotion perception, five patients who had undergone unilateral anterior temporal lobe resection were exposed to both unimodal (vocal or visual) and audiovisual emotional and neutral stimuli. In a classic paradigm, participants were asked to rate the emotional intensity of angry, fearful, joyful, and neutral stimuli on visual analog scales. Compared with matched controls, patients exhibited impaired categorization of joyful expressions, whether the stimuli were auditory, visual, or audiovisual. Patients confused joyful faces with neutral faces, and joyful prosody with surprise. In the case of fear, unlike matched controls, patients provided lower intensity ratings for visual stimuli than for vocal and audiovisual ones. Fearful faces were frequently confused with surprised ones. When we controlled for lesion size, we no longer observed any overall difference between patients and controls in their ratings of emotional intensity on the target scales. Lesion size had the greatest effect on intensity perceptions and accuracy in the visual modality, irrespective of the type of emotion. These new findings suggest that a damaged amygdala, or a disrupted bundle between the amygdala and the ventral part of the occipital lobe, has a greater impact on emotion perception in the visual modality than it does in either the vocal or audiovisual one. We can surmise that patients are able to use the auditory information contained in multimodal stimuli to compensate for difficulty processing visually conveyed emotion.

Citation (format ISO)
MILESI STERCK, Valérie et al. Multimodal emotion perception after anterior temporal lobectomy (ATL). In: Frontiers in human neuroscience, 2014, vol. 8, p. 275. doi: 10.3389/fnhum.2014.00275
Fichiers principaux (1)
Article (Published version)
accessLevelPublic
Identifiants
ISSN du journal1662-5161
675vues
227téléchargements

Informations techniques

Création02/12/2015 12:28:00
Première validation02/12/2015 12:28:00
Heure de mise à jour14/03/2023 23:56:13
Changement de statut14/03/2023 23:56:12
Dernière indexation16/01/2024 19:44:33
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack