Supratim Ray
IISc, Bengaluru
Supratim Ray received a B.Tech. in Electrical Engineering from IIT Kanpur and a Ph.D. in Biomedical Engineering from the Johns Hopkins School of Medicine, USA. He did his postdoctoral training in the Department of Neurobiology at Harvard Medical School with John Maunsell. He joined the Center for Neuroscience in June 2011. His research areas are neural oscillations and high-level cognition.
Session 2B: Symposium on “Neurocircuits Governing Behavior”
Chairperson:
Behaviour, Mechanisms and Circuits through the Lens of Gamma Oscillations
Gamma oscillations are high-frequency (30–80 Hz) oscillations in brain signals which are modulated by high-level cognition, such as attention and meditation, potentially offering clues about mechanisms underlying high-level cognition. We study gamma oscillations in both humans and non-human primates while they are engaged in cognitive tasks. I will first discuss how healthy ageing, mental disorders such as Alzheimer’s disease (AD), and meditation affect gamma oscillations in humans. I will then discuss how these oscillations can be induced by the presentation of visual stimuli in non-human primates and how the presence of small discontinuities in the stimulus affects these oscillations. Finally, I will describe a simple circuit model which captures these stimulus dependencies, providing important clues about the neural circuits that give rise to gamma oscillations.