title: Effects of tactile interference stimulation on somatosensory evoked magnetic fields.
abstract: Tactile stimulation of the hand interferes with somatosensory evoked brain responses following electrical median nerve stimulation. This effect was studied in eight normal subjects by magnetonecephalography (MEG). When stimulation was applied to the hand ipsilateral to the stimulated nerve, only the third response (3M) was enhanced in five subjects, but other responses were attenuated in all subjects. These interference effects were probably due to interactions in areas 3b and 1. After stimulation of the contralateral hand, only the second response (2M) was enhanced in six subjects. This effect was probably due to the intracerebral interactions mediated through the corpus callosum.
authors.affiliation: Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Kakigi
authors.forename: S
authors.initials: S
authors.lastname: Koyama
authors.forename: M
authors.initials: M
authors.lastname: Hoshiyama
authors.forename: Y
authors.initials: Y
authors.lastname: Kitamura
authors.forename: M
authors.initials: M
authors.lastname: Shimojo
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.forename: A
authors.initials: A
authors.lastname: Nakamura
mesh_terms: D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology; D004558:Electric Stimulation; D004574:Electromagnetic Fields; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D007839:Functional Laterality / Q000502:physiology; D006225:Hand / Q000294:innervation / Q000502:physiology; D006801:Humans; D015225:Magnetoencephalography; D008297:Male; D008475:Median Nerve / Q000502:physiology; D013003:Somatosensory Cortex / Q000502:physiology; D014110:Touch / Q000502:physiology*