Figure S2.

Examples of single-trial neural activity to visual categories in different temporal sites (within the temporal cluster) in four different patients. Same display type as in Figure 4. Within a global response GBR can be “tuned” to respond more to certain categories than others. In (A) the strongest gamma-band response is elicited by Tools, in (B) by Scenes, in (C) by Animals and in (D) by houses. Although most of the time the onset appears to be simultaneous for all categories, the amplitude and duration of the response may vary. All reported GBR effects are amplitude increases as compared to average baseline amplitude. On the contrary, most ABR effects consist in amplitude decreases as compared to average baseline amplitude.