The Journal of Neuroscience, January 11, 2006, ():
Tactile Spatial Attention Enhances Gamma-Band Activity in Somatosensory Cortex and Reduces Low-Frequency Activity in Parieto-Occipital Areas
J. Neurosci. Bauer et al.
26: 490
Supplemental data
Files in this Data Supplement:
- supplemental material
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Supplementary Figure 1: Time domain source-analysis for the window between 40 and
60 ms after stimulus onset, reflecting the first peak of evoked activity (M50). The results confirm that this activity localizes in contralateral primary somatosensory cortex. The generators for the M50 are localized in the same brain regions as the one found for the gamma-band-activity.
- supplemental material
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Supplementary Figure 2: Time courses of beta-band-power as computed over all non-sample test-stimuli in sensors overlying somatosensory cortex contralateral to the side of stimulation. A: Stimulation induced power changes relative to baseline. The difference between attended and unattended stimuli during the suppression phase is mainly attributable to differences in the baseline as can be seen in B. B: Time courses of non-normalized power in the beta-band reveal systematic differences in the baseline period such that power is enhanced for the unattended conditions due to the beta-rebound from the previous stimulus. It is therefore unclear what the real baseline level would be.
