Chunk #24 — Examples of changes in the electroencephalogram and event-related oscillations — Differentiated changes in target responses in bipolar disorder
Evoked and event-related slow and fast theta oscillations in response to an auditory stimulus were studied in 22 euthymic drug-free patients with BD I (n =19) or BE) II (n =3). A two-tone oddball task was used, with frequent 1600-Hz target tones, and infrequent 1500-Hz non-target tones. The tones were presented in a random sequence at 3-7 second intervals. The subjects were instructed to keep a mental count of the number of 1600 Hz target tones. A FFT was applied to the 0-800 ms period after stimulus onset.
