Figure 2.

Oscillations and time-frequency responses in prefrontal cortex during a visual short-term memory task. (A) Visual memory task in case of a non-match condition. After sample stimulus presentation for 0.5 s, the information of the sample has to be maintained for 3 s and compared to the test stimulus. (B) Ten simultaneous field potential recordings from microelectrodes in ventral prefrontal cortex, scale bar indicates 100 μV. (C) Evoked responses computed from prefrontal LFPs by estimating the distribution of signal amplitude in a pre-stimulus epoch 500 ms before stimulus onset. Responses were considered significant if five or more successive bins exceeded a 1% threshold. Green and red traces represent evoked responses in trials with correct and false behavioral responses, respectively.