Figure 3
![Figure 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2202-5-13/MediaObjects/12868_2003_Article_89_Fig3_HTML.jpg)
Individual time-frequency representations of the EEG activity at electrode O2 for two subjects. The plots reveal different amplitudes and frequencies of the evoked gamma response (subject 1: 35 Hz, subject 2: 40 Hz). Both subjects show a stronger activation for objects than non-objects.