[PDF][PDF] Slope of the power spectral density flattens at low frequencies (< 150 Hz) with healthy aging but also steepens at higher frequency (> 200 Hz) in human …

S Aggarwal, S Ray - Cerebral Cortex Communications, 2023 - academic.oup.com
The power spectral density (PSD) of the brain signals is characterized by two distinct
features: oscillations, which are represented as distinct “bumps,” and broadband aperiodic …

Stimulus-induced narrow-band gamma oscillations in humans can be recorded using open-hardware low-cost EEG amplifier

S Pattisapu, S Ray - PloS one, 2023 - journals.plos.org
Stimulus-induced narrow-band gamma oscillations (30–70 Hz) in human electro-
encephalograph (EEG) have been linked to attentional and memory mechanisms and are …

Healthy ageing and cognitive impairment alter EEG functional connectivity in distinct frequency bands

WS Kumar, S Ray - European Journal of Neuroscience, 2023 - Wiley Online Library
Functional connectivity (FC) indicates the interdependencies between brain signals
recorded from spatially distinct locations in different frequency bands, which is modulated by …

Stimulus-induced robust narrow-band gamma oscillations in human EEG using Cartesian gratings

DVPS Murty, S Ray - Bio-protocol, 2022 - bio-protocol.org
Stimulus-induced narrow-band gamma oscillations (20–70 Hz) are induced in the visual
areas of the brain when particular visual stimuli, such as bars, gratings, or full-screen hue …

Reliability of dynamic causal modelling of resting‐state magnetoencephalography

A Jafarian, MK Assem, E Kocagoncu… - Human Brain …, 2024 - Wiley Online Library
This study assesses the reliability of resting‐state dynamic causal modelling (DCM) of
magnetoencephalography (MEG) under conductance‐based canonical microcircuit models …

Stimulus-induced gamma sources weaken but not shrink with healthy aging in human EEG

WS Kumar, K Sharma, S Ray - bioRxiv, 2024 - biorxiv.org
Aging alters brain structure and function, and studying such changes may help understand
the neural basis underlying aging and devise interventions to detect deviations from healthy …