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The mismatch negativity (MMN), well established in auditory modality, reflects the automatic processing. In somatosensory modality, however, no MMN like component has been reported, in contrast to numerous studies concerning auditory MMN.In the present study, we investigated the response corresponding to MMN by using the deviant stimuli in a homogenous somatosensory stimuli sequence, while the subjects...
It is suggested that the receiving somatosensory cortical areas are deployed on the brain surface, whereas the auditory or visual receiving areas are more deeply locate (Desmedt et al. 1983). Thus, early components of the somatosensory event-related potentials (ERPs) can be easily recorded from the scalp electrodes. Therefore, somatosensory CNV paradigm, which has been rarely employed, can be, applied...
McCallum and Walter (1968) reported that attentional distraction reduced the amplitude of contingent negative variation (CNV). This finding has been supported by later studies (Tecce et al.). Although early CNV has been considered to reflect orienting response including passive attention since CNV was separated into two components (early and late CNV) by Rohrbaugh (1976), little is known about the...
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