Can bipolar disorder have recognizable symptoms in a person's eeg?

Could be. One small [18 patient] study has shown that bipolar patients -- even when not in a mood episode -- have decreased Alpha activity in their eeg's. http://www.ncbi.nlm.nih.gov/pmc/articles/pmc3253163/ they were also free of medications for at least 2 weeks for the study. The authors feel it may differentiate bipolar from schizophrenia eeg's, but it's not diagnostically definitive on its own.
Supposedly, yes. There is an experimental technique utilizing an eeg during electric shock convulsion. Patients with bipolar disorder show a high occurrence of high frequency activity in the gamma brainwave range on the eeg reading. Patients will reach a maximum peak, followed by two minor peaks ranging from 47 hz to 51 hz. These frequencies are located in the postictal-suppression phase of the patient's seizure.

Related Questions

Help please! Is bipolar disorder recognizable in one's eeg?

No. There is no good evidence eegs are different in people who have bipolar, alas. It would make diagnosing bipolar so much simpler if we had such a simple test. Read more...
Possibly, not surely. One small study has shown that bipolar patients -- even when not in a mood episode -- have decreased Alpha activity in their eeg's. http://www.ncbi.nlm.nih.gov/pmc/articles/pmc3253163/ they were also free of medications for at least 2 weeks for the study. The authors feel this may differentiate bipolar from schizophrenia eeg's. It doesn't seem diagnostically definitive on its own, though. Read more...