Eshel, N;
Ruff, CC;
Spitzer, B;
Blankenburg, F;
Driver, J;
(2010)
Effects of parietal TMS on somatosensory judgments challenge interhemispheric rivalry accounts.
Neuropsychologia
, 48
(12)
3470 - 3481.
10.1016/j.neuropsychologia.2010.07.031.
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Abstract
Interplay between the cerebral hemispheres is vital for coordinating perception and behavior One influential account holds that the hemispheres engage in rivalry each inhibiting the other In the somatosensory domain a seminal paper claimed to demonstrate such interhemispheric rivalry reporting improved tactile detection sensitivity on the right hand after transcranial magnetic stimulation (TMS) to the right parietal lobe (Seyal Ro & Rafal 1995) Such Improvement in tactile detection ipsilateral to TMS could follow from interhemispheric rivalry if one assumes that TMS disrupted cortical processing under the coil and thereby released the other hemisphere from inhibition Here we extended the study by Seyal et al (1995) to determine the effects of right parietal TMS on tactile processing for either hand rather than only the ipsilateral hand We performed two experiments applying TMS in the context of median-nerve stimulation one experiment required somatosensory detection the second somatosensory intensity discrimination We found different TMS effects on detection versus discrimination but neither set of results followed the prediction from hemispheric rivalry that enhanced performance for one hand should invariably be associated with impaired performance for the other hand and vice-versa Our results argue against a strict rivalry interpretation Instead suggesting that parietal TMS can provide a pedestal-like increment in somatosensory response (C) 2010 Elsevier Ltd All rights reserved
| Type: | Article |
|---|---|
| Title: | Effects of parietal TMS on somatosensory judgments challenge interhemispheric rivalry accounts |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.neuropsychologia.2010.07.031 |
| Publisher version: | http://doi.org/10.1016/j.neuropsychologia.2010.07.... |
| Language: | English |
| Additional information: | © 2010 Elsevier Ltd. Open access under CC BY license. |
| Keywords: | Transcranial magnetic stimulation, Rivalry, Tactile perception, TRANSCRANIAL MAGNETIC STIMULATION, HUMAN MOTOR CORTEX, MEDIAN NERVE-STIMULATION, CORTICAL EXCITABILITY, TRANSIENT SUPPRESSION, MOVEMENT KINEMATICS, SENSORIMOTOR CORTEX, TACTILE PERCEPTION, VISUAL-ATTENTION, CORPUS-CALLOSUM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/168126 |
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