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Updated: Dec 19, 2025

Juxtacellular Monitoring and Localization of Single Neurons within Sub-cortical Brain Structures of Alert, Head-restrained Rats
Published on: April 27, 2015
Neuronal Encoding of Multisensory Motion Features in the Rat Associative Parietal Cortex
Jeanne Caron-Guyon1, Julien Corbo1,2, Yoh'i Zennou-Azogui1
1Aix Marseille Université, CNRS, LNSC UMR 7260, Marseille 13331, France.
Abstract:
Motion perception is facilitated by the interplay of various sensory channels. In rodents, the cortical areas involved in multisensory motion coding remain to be identified. Using voltage-sensitive-dye imaging, we revealed a visuo-tactile convergent region that anatomically corresponds to the associative parietal cortex (APC). Single unit responses to moving visual gratings or whiskers deflections revealed a specific coding of motion characteristics strikingly found in both sensory modalities. The heteromodality of this region was further supported by a large proportion of bimodal neurons and by a classification procedure revealing that APC carries information about motion features, sensory origin and multisensory direction-congruency. Altogether, the results point to a central role of APC in multisensory integration for motion perception.
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