Average time-frequency representation of the EEG activity at electrode O2 (averaged across all 13 subjects)

Copyright information:

Taken from "Memory-matches evoke human gamma-responses"

BMC Neuroscience 2004;5():13-13.

Published online 13 Apr 2004

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC419345/

Copyright © 2004 Herrmann et al; licensee BioMed Central Ltd. This is an Open Access article: verbatim copying and redistribution of this article are permitted in all media for any purpose, provided this notice is preserved along with the article's original URL.

A clear peak of evoked gamma activity is visible shortly before 100 ms in the frequency range of 30 to 40 Hz. This peak is significantly stronger for objects (top) than non-objects (bottom).