Intra- and crossmodal refractory effects in auditory and somatosensory ERPs

in Seeing and Perceiving
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Refractory period effects are defined as a temporal decrement in neural response due to a previous activation of the same system. We varied the ISI and modality of a preceding stimulus to investigate overlapping and distinct neural systems processing auditory and tactile stimuli. Auditory stimuli and tactile stimuli were presented in a sequential, random manner with a duration of 50 ms and an ISI of 1000 or 2000 ms. The P1–N1–P2 complex of event-related potentials (ERP) was analyzed separately for auditory and tactile stimuli, as a function of preceding ISI and modality. Main effects of ISI and modality were found within the time-window of the P1 and P2 (auditory) and P1, N1 and P2 (tactile). These results suggest an overlap in underlying neural systems when stimuli from different modalities are being processed.

Intra- and crossmodal refractory effects in auditory and somatosensory ERPs

in Seeing and Perceiving

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