Associations of physical activity, sedentary time, sleep quality, and resting EEG with mild depressive symptoms in college students: a cross-sectional study

College students with mild depressive symptoms may exhibit altered behavioral patterns and abnormal neural activity in the frontal and temporal regions. Their changed behavioral patterns may correlate with mild depressive symptoms, and recognition models based on certain resting EEG indicators demonstrate preliminary application potential. The association between specific sleep issues and localized EEG activity in this population may provide evidence for further elucidating the mechanistic pathways linking their behavior and brain activity. Future longitudinal studies are recommended to explore causal relationships among these variables.