The representation of occluded image regions in area V1 of monkeys and humans

Paolo Papale, Feng Wang, A Tyler Morgan, Xing Chen, Amparo Gilhuis, Lucy S Petro, Lars Muckli, Pieter R Roelfsema, Matthew W Self

Onderzoeksoutput: Bijdrage aan wetenschappelijk tijdschrift/periodieke uitgaveArtikelWetenschappelijkpeer review

66 Downloads (Pure)

Samenvatting

Neuronal activity in the primary visual cortex (V1) is driven by feedforward input from within the neurons' receptive fields (RFs) and modulated by contextual information in regions surrounding the RF. The effect of contextual information on spiking activity occurs rapidly and is therefore challenging to dissociate from feedforward input. To address this challenge, we recorded the spiking activity of V1 neurons in monkeys viewing either natural scenes or scenes where the information in the RF was occluded, effectively removing the feedforward input. We found that V1 neurons responded rapidly and selectively to occluded scenes. V1 responses elicited by occluded stimuli could be used to decode individual scenes and could be predicted from those elicited by non-occluded images, indicating that there is an overlap between visually driven and contextual responses. We used representational similarity analysis to show that the structure of V1 representations of occluded scenes measured with electrophysiology in monkeys correlates strongly with the representations of the same scenes in humans measured with functional magnetic resonance imaging (fMRI). Our results reveal that contextual influences rapidly alter V1 spiking activity in monkeys over distances of several degrees in the visual field, carry information about individual scenes, and resemble those in human V1.

Originele taal-2Engels
Pagina's (van-tot)1-7
TijdschriftCurrent Biology
Volume33
DOI's
StatusGepubliceerd - 23 aug. 2023

Vingerafdruk

Duik in de onderzoeksthema's van 'The representation of occluded image regions in area V1 of monkeys and humans'. Samen vormen ze een unieke vingerafdruk.

Citeer dit