Shahab BakhtiariAug 28, 2023
The vOICe vision BCI 🧠🇪🇺

The representation of occluded image regions in area V1 of monkeys and humans https://www.sciencedirect.com/science/article/abs/pii/S0960982223010539 by @tylermorgan et al.; #neuroscience

"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."

Aug 28, 2023 at 3:36pmWeb
Show threadThe vOICe vision BCI 🧠🇪🇺Aug 28, 2023
Is there a way to selectively disable the influence of feedback signals from higher visual areas, e.g. by applying properly timed TMS to mask those feedback signals and see what that does to contextual influences?
Show threadThe vOICe vision BCI 🧠🇪🇺Aug 28, 2023
(YouTube) The representation of occluded image regions in area V1 of monkeys and humans https://www.youtube.com/watch?v=QuEQXWRBR_s Partial occlusion causes completion in V1 through feedback from higher visual areas.
The representation of occluded image regions in area V1 of monkeys and humans

YouTube
Show threadThe vOICe vision BCI 🧠🇪🇺Aug 29, 2023
The non-paywalled PDF of a preprint of the paper is available at https://www.biorxiv.org/content/10.1101/2022.11.21.517305v1 Feedback brings scene information to the representation of occluded image regions in area V1 of monkeys and humans
Show threadThe vOICe vision BCI 🧠🇪🇺Aug 31, 2023
The PDF of the full paper in Current Biology is also available on ResearchGate at https://www.researchgate.net/publication/373444643_The_representation_of_occluded_image_regions_in_area_V1_of_monkeys_and_humans
Show threadMattSep 3, 2023
@seeingwithsound Doesn't much of the contextual processing come from the PPA? Somewhat difficult area to apply TMS to
Show threadThe vOICe vision BCI 🧠🇪🇺Sep 3, 2023
@mdc Not sure, I'm not a neuroscientist. Perhaps temporarily knocking out V2 would also do the job, and if TMS would not work then perhaps tFUS - my question was intended to be quite open: whatever works to block feedback signals to V1.