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Tactile stimulation accelerates behavioral responses to visual stimuli through enhancement of occipital gamma-band activity
- Source :
-
Vision Research . May2009, Vol. 49 Issue 9, p931-942. 12p. - Publication Year :
- 2009
-
Abstract
- Abstract: We investigated how responses of occipital cortex to visual stimuli are modulated by simultaneously presented tactile stimuli. Magnetoencephalography was recorded while subjects performed a simple reaction time task. Presence of a task-irrelevant tactile stimulus leads to faster behavioral responses and earlier and stronger gamma-band synchronization in occipital cortex, irrespective of the relative location of the tactile stimulus. While also other stimulus related responses in occipital cortex were modulated (alpha-band and evoked responses in parieto-occipital region), correlation-analysis revealed induced gamma-band activity to be the best predictor of the faster behavioral response latencies, suggesting a key-role of oscillatory activity for cross-modal integration. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00426989
- Volume :
- 49
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Vision Research
- Publication Type :
- Academic Journal
- Accession number :
- 40632674
- Full Text :
- https://doi.org/10.1016/j.visres.2009.03.014