Abstract:
:Successful visual navigation requires a sense of the geometry of the local environment. How do our brains extract this information from retinal images? Here we visually presented scenes with all possible combinations of five scene-bounding elements (left, right, and back walls; ceiling; floor) to human subjects during functional magnetic resonance imaging (fMRI) and magnetoencephalography (MEG). The fMRI response patterns in the scene-responsive occipital place area (OPA) reflected scene layout with invariance to changes in surface texture. This result contrasted sharply with the primary visual cortex (V1), which reflected low-level image features of the stimuli, and the parahippocampal place area (PPA), which showed better texture than layout decoding. MEG indicated that the texture-invariant scene layout representation is computed from visual input within ∼100 ms, suggesting a rapid computational mechanism. Taken together, these results suggest that the cortical representation underlying our instant sense of the environmental geometry is located in the OPA.
journal_name
Neuronjournal_title
Neuronauthors
Henriksson L,Mur M,Kriegeskorte Ndoi
10.1016/j.neuron.2019.04.014subject
Has Abstractpub_date
2019-07-03 00:00:00pages
161-171.e3issue
1eissn
0896-6273issn
1097-4199pii
S0896-6273(19)30349-6journal_volume
103pub_type
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