Visual cortex: Difference between revisions

Revision as of 06:36, 10 August 2025

Revision as of 06:38, 10 August 2025

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Differences in size of V1 also seem to have an effect on the [[Interindividual differences in perception|perception of illusions]].<ref name="surface_V1">{{cite journal | vauthors = Schwarzkopf DS, Song C, Rees G | title = The surface area of human V1 predicts the subjective experience of object size | journal = Nature Neuroscience | volume = 14 | issue = 1 | pages = 28–30 | date = January 2011 | pmid = 21131954 | pmc = 3012031 | doi = 10.1038/nn.2706 }}</ref>

[https://scholar.google.com/citations?view_op=view_citation&hl=en&user=7yagBSIAAAAJ&citation_for_view=7yagBSIAAAAJ:d1gkVwhDpl0C Recent studies] have shown the existence of two gamma rhythms in the hippocampus subserving different functions but, to date, primate studies in primary visual cortex have reported a single gamma rhythm. Here, wethe authors show that large visual stimuli induce a slow gamma (25–45 Hz) in area V1 of two awake adult female bonnet monkeys and in the EEG of 15 human subjects (7 males and 8 females), in addition to the traditionally known fast gamma (45–70 Hz). The two rhythms had different tuning characteristics for stimulus orientation, contrast, drift speed, and size. Further, fast gamma had short latency, strongly entrained spikes and was coherent over short distances, reflecting short-range processing, whereas slow gamma appeared to reflect long-range processing. Together, two gamma rhythms can potentially provide better coding or communication mechanisms and a more comprehensive biomarker for diagnos. This is a spectacular research done by [https://scholar.google.com/citations?user=nsdC4UcAAAAJ&hl=en Dinavahi VPS Murty], [https://scholar.google.com/citations?user=7yagBSIAAAAJ&hl=en Vinay Shirhatti], [https://scholar.google.com/citations?user=BkahjV4AAAAJ&hl=en Poojya Ravishankar], [https://scholar.google.co.in/citations?user=zX65BKYAAAAJ&hl=en Supratim Ray]

== V2 == <!--Please keep this header, as it is a redirect -->