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Lookup NU author(s): Dr Samy Rima
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The aim of this study is to characterize the cortical network processing egomotion-compatible optic flow in non-human primate. Functional MRI recordings were performed in 3 awake behaving macaques. The experimental protocol was similar to the one of a previous human study: we used a block design paradigm where the stimuli alternated between a baseline (fixation point only), a single patch of egomotion-compatible optic flow (‘EC’) and an array of nine similar optic flow patches that was inconsistent with egomotion (‘EI’). We characterized the cortical areas responding to egomotion-compatible optical flow through the contrast ‘EC’ > ‘EI’. Consistent with human data and single-cell studies in macaque, significant activations were found in dorsal MST, in area VIP and in the visual posterior sylvian area (VPS). Responses in the pursuit area of the frontal eye field (FEFsem) and in area FST were also significantly stronger for the ‘EC’ condition. We did not find consistent activity in area V6 nor in the cingulate sulcus, two regions that are particularly responsive in human using the same experimental protocol. Altogether, our results suggest that if monkeys also have extended cortical networks to guide their navigation, these networks are not exactly homologous to those observed in human.
Author(s): Cottereau BR, Rima S, Trotter Y, Smith A, Durand JB
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 39th European Conference on Visual Perception (ECVP) 2016
Year of Conference: 2016
Pages: 325-325
Print publication date: 01/08/2016
Online publication date: 06/12/2016
Acceptance date: 01/01/2016
ISSN: 0301-0066
Publisher: Sage Publications Ltd.
URL: https://doi.org/10.1177/0301006616671273
DOI: 10.1177/0301006616671273
Notes: [4P095]
Series Title: Perception
