Are we aware of neural activity in primary visual cortex? A neuropsychological case study

Autor:	Fabien Hauw, Aude Sangaré, Esteban Munoz‐Musat, Claire Meyniel, Nina Di Donato, Sylvie Chokron, Frédérique Bozon, Lionel Naccache
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	prefrontal cortex vision consciousness cortical blindness primary visual cortex Neurosciences. Biological psychiatry. Neuropsychiatry RC321-571 Neurology. Diseases of the nervous system RC346-429
Zdroj:	Annals of Clinical and Translational Neurology, Vol 11, Iss 5, Pp 1365-1370 (2024)
Druh dokumentu:	article
ISSN:	2328-9503
DOI:	10.1002/acn3.52038
Popis:	Abstract Objective According to a seminal hypothesis stated by Crick and Koch in 1995, one is not aware of neural activity in primary visual cortex (V1) because this region lacks reciprocal connections with prefrontal cortex (PFC). Methods We provide here a neuropsychological illustration of this hypothesis in a patient with a very rare form of cortical blindness: ventral and dorsal cortical pathways were lesioned bilaterally while V1 areas were partially preserved. Results Visual stimuli escaped conscious perception but still activated V1 regions that were functionally disconnected from PFC. Interpretation These results are consistent with the hypothesis of a causal role of PFC in visual awareness.
Databáze:	Directory of Open Access Journals
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