Figure 3.

Frequency bands that were increased by attentive anticipation of the target stimuli. Histograms resulting from stacking together the frequency ranges with significant differences between FFTs obtained from visual and auditory attentive trials at all investigated levels of the visual system (see Results for details). A, MSS; B, LPl-c; C, area 18; D, area 17. Black parts in the two top histograms indicate stacked ranges of significantly different FFT amplitudes obtained from the ventromedial core region of LPl-c (>0.8 mm from pulvinar border) and from medial bank of the MSS. White parts of these histograms represent the dorsolateral LPl-c and lateral bank of MSS, respectively. Each histogram consists of a different number of animals/recording sites: area 17 (14/30), area 18 (10/17), LPl-c (10/10), and MSS (6/6). For details, see Tables 1, 2.