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Lookup NU author(s): Dr Samy Rima
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).
The cortical network that processes visual cues to self-motion was characterized with functional magnetic resonance imaging in 3 awake behaving macaques. The experimental protocol was similar to previous human studies in which the responses to a single large optic flow patch were contrasted with responses to an array of 9 similar flow patches. This distinguishes cortical regions where neurons respond to flow in their receptive fields regardless of surrounding motion from those that are sensitive to whether the overall image arises from self-motion. In all 3 animals, significant selectivity for egomotion-consistent flow was found in several areas previously associated with optic flow processing, and notably dorsal middle superior temporal area, ventral intra-parietal area, and VPS. It was also seen in areas 7a (Opt), STPm, FEFsem, FEFsacand in a region of the cingulate sulcus that may be homologous with human area CSv. Selectivity for egomotion-compatible flow was never total but was particularly strong in VPS and putative macaque CSv. Direct comparison of results with the equivalent human studies reveals several commonalities but also some differences.Key
Author(s): Cottereau BR, Smith AT, Rima S, Fize D, Héjja-brichard Y, Renaud L, Lejards C, Vayssière N, Trotter Y, Durand JB
Publication type: Article
Publication status: Published
Journal: Cerebral Cortex
Year: 2017
Volume: 27
Issue: 1
Pages: 330–343
Print publication date: 01/01/2017
Online publication date: 20/01/2017
Acceptance date: 20/01/2017
Date deposited: 24/04/2018
ISSN (print): 1047-3211
ISSN (electronic): 1460-2199
Publisher: Oxford University Press
URL: https://doi.org/10.1093/cercor/bhw412
DOI: 10.1093/cercor/bhw412
PubMed id: 28108489
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