7/12/2017 · We evaluate this hypothesis determining that beta-band top-down influences from parietal area 7a to visual area V1 are correlated with bottom-up gamma frequency influences from V1 to area V4, in a spatially specific manner, and that this correlation is maximal when top-down activity precedes bottom-up activity.
This arrangement inspires an attractive hypothesis, which posits that top-down beta-band influences directly modulate bottom-up gamma band influences via cross-frequency interaction.
7/12/2017 · Top-down 7a-to-V1 beta -band influences enhanced visually driven V1-to-V4 gamma -band influences. This enhancement was spatially specific and largest when beta -band activity preceded gamma -band activity by ?0.1 s, suggesting a causal effect of.
We find that on an epoch-by-epoch basis, top-down beta-band influences enhance bottom-up gamma-band influences. This effect is spatially specific, i.e.
bottom-up gamma-band influences depend most strongly on the top-down beta-band influences that are directed to the origin of the bottom-up influence.
5/11/2017 · Significance Statement Contemporary research indicates that the alpha-beta frequency band underlies top-down control, while the gamma-band mediates bottom-up stimulus processing. This arrangement inspires an attractive hypothesis, which posits that top-down beta-band influences directly modulate bottom-up gamma band influences via cross-frequency interaction.
Title: Top-down beta enhances bottom-up gamma : Author(s): Richter, C.G.; Thompson, W.H.; Bosman, C.A.; Fries, P. Publication year: 2017: Source: The Journal of …
tially specific, i.e.
bottom-up gamma-band influences depend most strongly on the top-down beta-band influences that are directed to the origin of the bottom-up influence. Spontaneous enhancements in top-down beta-band influences are followed 0.1 s later by enhancements in bottom-up gamma-band influ-ences, suggestive of a causal relation.
This arrangement inspires an attractive hypothesis, which posits that top-down beta-band influences directly modulate bottom-up gamma band influences via cross-frequency interaction.
6/7/2017 · Top-down beta enhances bottom-up gamma . Craig G. Richter 1, , William H. Thompson 1,2, , Conrado A. Bosman 3,4 and Pascal Fries 1,3 1Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528 Frankfurt, Germany, Top-down 7a-to-V1 beta-band influences enhanced visually driven V1-to-V4 gamma-band influences. This enhancement was spatially specific and largest when beta-band activity preceded gamma-band activity by approximately 0.1 s, suggesting a causal effect of …
