Distinguishing major depressive disorder from bipolar disorder using alpha-band activity in resting-state electroencephalogram

Journal of Affective Disorders, Journal Year: 2025, Volume and Issue: 376, P. 333 - 340

Published: Feb. 15, 2025

Language: Английский

Aging amplifies sex differences in low alpha and low beta EEG oscillations

NeuroImage, Journal Year: 2025, Volume and Issue: unknown, P. 121231 - 121231

Published: April 1, 2025

Biological sex profoundly shapes brain function, yet its precise influence on neural oscillations was poorly understood. Despite decades of research, studies investigating sex-based variations in electroencephalographic (EEG) signals have yielded inconsistent findings that obstructs what may be a potentially crucial source inter-individual variability function. To address this, we analyzed five publicly available resting-state datasets, comprising EEG data (n=445) and iEEG (n=103). Three age ranges were defined, young adult (YA, 18-30 years), middle-aged (MA, 30-55 years) older (OA, 55-75 years). Our results revealed striking age-dependent differences: OA group exhibited robust differences, with males showing heightened low alpha (8-9 Hz) activity temporal regions attenuated beta (16-20 parietal-occipital areas compared to females. Intriguingly, these sex-specific patterns absent YA group, suggesting complex interplay between aging shaping dynamics. The MA groups fall group. increase band female adults is strongly associated hip size BMI. Furthermore, identified consistent sex-related the precentral gyrus scalp EEG, driving observed differences. This multi-level analysis allowed us bridge gap cortical scalp-level observations, providing more comprehensive picture distinct associations oscillatory several lifestyle factors demonstrates sex, age, oscillations, revealing highlight importance careful demographic consideration research design ensure fairness capturing full spectrum neurophysiological diversity.

Language: Английский

Distinct Mechanisms of Multiple Alpha‐Band Activities in Frontal Regions Following an 8‐Week Medium‐ (Yoga) and High‐Intensity (Pamela) Exercise Intervention

CNS Neuroscience & Therapeutics, Journal Year: 2025, Volume and Issue: 31(5)

Published: May 1, 2025

ABSTRACT Aim Long‐term moderate‐ to high‐intensity exercise has been shown significantly enhance overall health such as the improvement of physiological indicators and brain functions. One key aspect activity is alpha‐band activity, which encompasses various sub‐oscillations within alpha frequency band. However, precise functions these following different regimens remain unclear. Methods We recruited 58 healthy college students divided them into four groups: Pamela (high‐intensity interval training, HIIT), yoga (moderate‐intensity continuous MICT), their corresponding matched control group (no exercise) for each intervention group. Participants in groups underwent training up 8 weeks (HIIT or MICT). Resting‐state EEG data were collected before after both with eyes open closed. Results Following HIIT, experienced a significant reduction body fat percentage notable increase skeletal muscle mass. In terms neural main difference was observed mid‐frequency range frontoparietal region during eyes‐open resting state. Conversely, 8‐week participants demonstrated duration maintaining balance sleep quality, reflected low‐ high‐frequency band activities bilateral frontotemporal regions eyes‐closed Conclusion This study, first time, differentiates effects long‐term on oscillation states, highlights that sub‐frequency bands would represent exercise‐related

Language: Английский