Figure 3.

LFP analysis. A, LFP activity traces of single fixation trials at an example-recording site. The spike trains of the simultaneously recorded single unit are also shown. The recorded activity is aligned to the onset of the stimulus depicted on top. The shaded areas show the baseline and the stimulus analyses periods. B, Mean LFP-power across frequency (2 Hz bandwidth) during the baseline (gray) and the stimulus response (black) periods, averaged across fixation trials corresponding to the example-recording site. The thickness of the lines depicts ±1 SEM. The bottom shows the relative-power during stimulus presentation, computed as the base-10 logarithm of the ratio between the power in the two analysis periods. C, LFP-power averaged across the recording sites of monkey Se (n = 48) and Lu (n = 33) in the two time periods during fixation trials. The relative power (log-ratio, bottom) was computed for each recording site (as in B) and then averaged across sites.