Biomarkers for mental disorders: EEG frequency bands - Spectral changes in the resting-state EEG
https://sapienlabs.co/eeg-frequency-bands-across-mental-health-disorders/
Increase in delta and/or theta: ADHD, schizophrenia, OCD (Obsessive-Compulsive Disorder), depression, bipolar disorder, alcohol addiction.
"Only cases in the lower frequency bands where the dominant result was a decrease, rather than an increase, was for autism (eyes closed) and PTSD/early life stress (eyes open)."
ADHD* and the theta-beta ratio
*Attention-deficit/hyperactivity disorder
Use of the ratio of the theta band (4-7 Hz) to the delta band (13-30 Hz) to assist ADHD diagnosis:
"Neuropsychiatric EEG-Based Assessment Aid for ADHD*" or NEBA System by NEBA Health
Approval of the device by the FDA and identification as "Neuropsychiatric Interpretive Electroencephalograph Assessment Aid"
SapienLabs on the theta-beta ratio: https://sapienlabs.co/adhd-and-the-theta-beta-ratio/
Discussion on FDA device approval linked to FDA endorsement of the theta-beta ratio
Editorial: https://www.ncbi.nlm.nih.gov/pubmed/27090383
Comment to editorial https://onlinelibrary.wiley.com/doi/full/10.1111/jcpp.12534
Version imprimable