Affiliation:
1. Centre de Recherche Cerveau et Cognition (CerCo), CNRS UMR 5549, Université de Toulouse, UPS , Toulouse , France
2. INSERM , CHU Purpan - BP 3028 - 31024 Toulouse Cedex 3 , France
Abstract
Abstract
The pulvinar is a heterogeneous thalamic nucleus, which is well developed in primates. One of its subdivisions, the medial pulvinar, is connected to many cortical areas, including the visual, auditory, and somatosensory cortices, as well as with multisensory areas and premotor areas. However, except for the visual modality, little is known about its sensory functions. A hypothesis is that, as a region of convergence of information from different sensory modalities, the medial pulvinar plays a role in multisensory integration. To test this hypothesis, 2 macaque monkeys were trained to a fixation task and the responses of single-units to visual, auditory, and auditory–visual stimuli were examined. Analysis revealed auditory, visual, and multisensory neurons in the medial pulvinar. It also revealed multisensory integration in this structure, mainly suppressive (the audiovisual response is less than the strongest unisensory response) and subadditive (the audiovisual response is less than the sum of the auditory and the visual responses). These findings suggest that the medial pulvinar is involved in multisensory integration.
Funder
French National Research Agency
Publisher
Oxford University Press (OUP)
Subject
Cellular and Molecular Neuroscience,Cognitive Neuroscience
Reference82 articles.
1. Convergence of visual and whisker responses in the primary somatosensory thalamus (ventral posterior medial region) of the mouse;Allen;J Physiol,2017
2. Multisensory processing in “unimodal” neurons: cross-modal subthreshold auditory effects in cat Extrastriate visual cortex;Allman;J Neurophysiol,2007
3. Not just for bimodal neurons anymore: the contribution of unimodal neurons to cortical multisensory processing;Allman;Brain Topogr,2009
4. Audiotactile interactions in the mouse cochlear nucleus;Ansorge;Sci Rep,2021
5. Dissociating emotion and attention functions in the pulvinar nucleus of the thalamus;Arend;Neuropsychology,2015
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