Analysis of Emotional Stress of Teachers in Japanese Teaching Process Based on EEG Signal Analysis.

The model comparison used only 14 normal subjects and 5 experimental subjects, so the reported performance may not generalise. The paper does not clearly state how subjects were assigned to normal and experimental groups, or whether they were teachers, students, or another group. The authors state the sample size is not complete enough to demonstrate an accurate ROC curve, and the optimal segmentation point of 0.55 is only approximate. The paper describes an aim to assist doctors in diagnosis, but it does not report a clinical diagnostic outcome, treatment effect, or relevance to therapists. No conflicts of interest or funding declaration appears in the supplied text.

Do not read the reported values of 0.93 and 0.99 as proof that EEG can diagnose teachers' emotional stress. The comparison had only 14 normal subjects and 5 experimental subjects, the authors say the sample is not complete enough for an accurate ROC curve, and the paper did not test a treatment or clinical diagnosis.