Auditory evoked gamma band potential in normal subjects.
The gamma band response (GBR) is a predominantly exogenous, sinusoidal evoked response that occurs usually between 20 and 130 msec following stimulus onset. This response is believed to represent the synchronization of neuronal assemblies that serve auditory feature integration. The objective of the present investigation was to describe the characteristics of the scalp-recorded auditory evoked gamma band potential (aeGBP) recorded from normal young adult subjects. Results showed the aeGBP to consist of up to four oscillations and were best recorded at the frontal-central midline. The aeGBP was present 80 percent to 100 percent of the time, appeared as onset responses, and was recorded at the shortest latency over the contralateral anterior temporal scalp.
Jacobson
G P
GP
Department of Otolaryngology, Head and Neck Surgery, Henry Ford Hospital, Detroit, Michigan 48202, USA.
Fitzgerald
M B
MB
D000328:Adult; D001301:Audiometry, Pure-Tone; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory; D005260:Female; D006309:Hearing / Q000502:physiology*; D006801:Humans; D008297:Male