16176367

Source:http://linkedlifedata.com/resource/pubmed/id/16176367

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0016129, umls-concept:C0025344, umls-concept:C0026649, umls-concept:C0037658, umls-concept:C0086418, umls-concept:C0175668, umls-concept:C0205225, umls-concept:C0443199, umls-concept:C1561960, umls-concept:C1709059, umls-concept:C1948053, umls-concept:C2347804
pubmed:issue	5
pubmed:dateCreated	2005-9-22
pubmed:abstractText	To elucidate the mechanisms underlying sensorimotor integration, we investigated modulation in the primary (SI) and secondary (SII) somatosensory cortices during the preparatory period of a self-initiated finger extension. Electrical stimulation of the right median nerve was applied continuously, while the subjects performed a self-initiated finger extension and were instructed not to pay attention to the stimulation. The preparatory period was divided into five sub-periods from the onset of the electromyogram to 3000 ms before movement and the magnetoencephalogram signals following stimulation in each sub-period were averaged. Multiple source analysis indicated that the equivalent current dipoles (ECDs) were located in SI and bilateral SII. Although the ECD moment for N 20 m (the upward deflection peaking at around 20 ms) was not significantly changed, that for P 30 m (the downward deflection peaking at around 30 m) was significantly smaller in the 0- to -500-ms sub-period than the -2000- to -3000-ms sub-period. As for SII, the ECD moment for the SII ipsilateral to movement showed no significant change, while that for the contralateral SII was significantly larger in the 0- to -500-ms sub-period than the -1500- to -2000-ms or -2000- to -3000-ms sub-period. The opposite effects of movement on SI and SII cortices indicated that these cortical areas play a different role in the function of the sensorimotor integration and are affected differently by the centrifugal process.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/8918110
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Sep
pubmed:issn	0953-816X
pubmed:author	pubmed-author:AkatsukaKosukeK, pubmed-author:IdéTT, pubmed-author:KakigiRyusukeR, pubmed-author:KidaTetsuoT, pubmed-author:NakataHirokiH, pubmed-author:WasakaToshiakiT
pubmed:issnType	Print
pubmed:volume	22
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	1239-47
pubmed:dateRevised	2006-11-15
pubmed:meshHeading	pubmed-meshheading:16176367-Adult, pubmed-meshheading:16176367-Analysis of Variance, pubmed-meshheading:16176367-Brain Mapping, pubmed-meshheading:16176367-Electric Stimulation, pubmed-meshheading:16176367-Electroencephalography, pubmed-meshheading:16176367-Electromyography, pubmed-meshheading:16176367-Electrooculography, pubmed-meshheading:16176367-Evoked Potentials, Somatosensory, pubmed-meshheading:16176367-Female, pubmed-meshheading:16176367-Fingers, pubmed-meshheading:16176367-Functional Laterality, pubmed-meshheading:16176367-Humans, pubmed-meshheading:16176367-Male, pubmed-meshheading:16176367-Median Nerve, pubmed-meshheading:16176367-Movement, pubmed-meshheading:16176367-Perception, pubmed-meshheading:16176367-Reaction Time, pubmed-meshheading:16176367-Somatosensory Cortex
pubmed:year	2005
pubmed:articleTitle	Differential modulation in human primary and secondary somatosensory cortices during the preparatory period of self-initiated finger movement.
pubmed:affiliation	Department of Integrative Physiology, National Institute for Physiological Sciences, Okazaki, Japan. wasaka@nips.ac.jp
pubmed:publicationType	Journal Article, Comparative Study, Research Support, Non-U.S. Gov't