Cued spatial attention drives functionally relevant modulation of the mu rhythm in primary somatosensory cortex.

Abstract

Cued spatial attention modulates functionally relevant alpha rhythms in visual cortices in humans. Here, we present evidence for analogous phenomena in primary somatosensory neocortex (SI). Using magnetoencephalography, we measured changes in the SI mu rhythm containing mu-alpha (7-14 Hz) and mu-beta (15-29 Hz) components. We found that cued attention impacted mu-alpha in the somatopically localized hand representation in SI, showing decreased power after attention was cued to the hand and increased power after attention was cued to the foot, with significant differences observed 500-1100 ms after cue. Mu-beta showed differences in a time window 800-850 ms after cue. The visual cue also drove an early evoked response beginning ∼70 ms after cue with distinct peaks modulated with cued attention. Distinct components of the tactile stimulus-evoked response were also modulated with cued attention. Analysis of a second dataset showed that, on a trial-by-trial basis, tactile detection probabilities decreased linearly with prestimulus mu-alpha and mu-beta power. These results support the growing consensus that cue-induced alpha modulation is a functionally relevant sensory gating mechanism deployed by attention. Further, while cued attention had a weaker effect on the allocation of mu-beta, oscillations in this band also predicted tactile detection.

DOI: 10.1523/JNEUROSCI.2969-10.2010

Extracted Key Phrases

4 Figures and Tables

020402008200920102011201220132014201520162017
Citations per Year

197 Citations

Semantic Scholar estimates that this publication has 197 citations based on the available data.

See our FAQ for additional information.

Cite this paper

@article{Jones2010CuedSA, title={Cued spatial attention drives functionally relevant modulation of the mu rhythm in primary somatosensory cortex.}, author={Stephanie R. Jones and Catherine Kerr and Qian Wan and Dominique L. Pritchett and Matti S. H{\"a}m{\"a}l{\"a}inen and Christopher I. Moore}, journal={The Journal of neuroscience : the official journal of the Society for Neuroscience}, year={2010}, volume={30 41}, pages={13760-5} }