Welcome to the NeurOscillations Lab !!

We study high-level cognition such as attention, in both humans and non-human primates, with a particular focus on a particular brain wave called “gamma” that is modulated by high-level cognition and also provides clues about the underlying neural circuitry.

Featured Publications

Murty DVPS, Manikandan K, Kumar WS, Ramesh RG, Purokayastha S, Nagendra B, Abhishek ML, Balakrishnan A, Javali M, Rao NP and Ray S† (2021). Stimulus-induced Gamma rhythms are weaker in human elderly with Mild Cognitive Impairment and Alzheimer’s Disease. eLife. Accepted
Prakash SS, Das A, Kanth ST, Mayo JP, Ray S† (2021). Decoding of attentional state using high-frequency local field potential is as accurate as using spikes. Cerebral Cortex. In press.
Das A and Ray S† (2021). Effect of cross-orientation normalization on different neural measures in macaque primary visual cortex. Cerebral Cortex Communications. Vol 2(1), Article tgab009.
Murty DVPS, Manikandan K, Kumar WS, Ramesh RG, Purokayastha S, Javali M, Rao NP and Ray S† (2020). Gamma oscillations weaken with age in healthy elderly in human EEG. Neuroimage. Vol 215, Article 116826.
Salelkar S and Ray S† (2020). Interaction between steady-state visually evoked potentials at nearby flicker frequencies. Scientific Reports. 10, Article 5344.

Research Highlights

Neural basis of LFP, ECoG and EEG

Our setup allows a thorough investigation of the properties of macro-signals such as LFP, ECoG and EEG, since we have...
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Neural mechanisms of selective attention

We study the relationship between selective attention, gamma rhythm and a neural mechanism called normalization, which has been recently associated...
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Signal Processing Techniques

Bridging brain signals across scales requires mathematical and signal processing tools (such as power spectral density and coherence), which are...
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Stimulus dependence of gamma oscillations

Gamma oscillations induced in the visual cortex are highly dependent on the properties of the visual stimulus, such as its...
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