Hosted by the Wellcome Neural Dynamics PhD Programme
Pascal will be joining online.
This talk will present evidence that the gamma rhythm defines stimulus-specific neuronal groups that are learned over repeated stimulus presentations. The gamma rhythm entails a resonance that selectively transmits inputs that are coherent with the ongoing rhythm. In the presence of several gamma-rhythmic inputs, e.g. induced by competing stimuli, the one induced by the attended stimulus selectively entrains receiving groups, leading to selective transmission. Gamma-band influences between visual areas are stronger in the bottom-up than top-down direction, while the reverse is true for the beta band. Interareal entrainment in both bands occurs at the phase relation that predicts shortest behavioral reaction times in a visual attention task. Finally, there is evidence for a causal role of phase relations: When two oscillating visual stimuli entrain human visual cortex, the phase-leading one is perceived as brighter.
Join online: https://bristol-ac-uk.zoom.us/j/94138286231?pwd=MlRURE1SWjR6OTZCR1Fnak9QbGxhUT09, Meeting ID: 941 3828 6231, Passcode: 277162
If you would like a 1-on-1 meeting with Pascal, please contact Petra Fischer.