Attentional selection of location and modality in vision and touch modulates low-frequency activity in associated sensory cortices.

In sensors overlying occipital cortex, the spatial-attention effect was nearly significant for the β-band ( t = −1.78, P = 0.0503) and highly significant for the α-band ( t = −5.6, P < 0.001).

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Analogously, for α at occipital sensors, there were main effects of spatial attention [lower α for contralateral attention, F (1,12) = 22.50, P < 0.01] and of attended modality [lower α now when vision was task-relevant, F (1,12) = 15.60, P < 0.01] and a trend for an interaction [ F (1,12) = 4.28, P = 0.06] that was not quite significant.

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