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ID 10869
Eprint ID
10869
FullText URL
K003234.pdf 78.1 KB
Title Alternative
MUSICアルゴリズムを用いたP300の電流源解析
Author
Uohashi, Tetsuo
Abstract
The authors studied the localization of P300 magnetic sources using the multiple signal classification (MUSIC) algorithm. Six healthy subjects (aged 24–34 years old) were investigated with 148-channel whole-head type magnetencephalography using an auditory oddball paradigm in passive mode. The authors also compared six stimulus combinations in order to find the optimal stimulus parameters for P300 magnetic field (P300m) in passive mode. Bilateral MUSIC peaks were located on the mesial temporal, superior temporal and parietal lobes. Interestingly, all MUSIC peaks in these regions emerged earlier in the right hemisphere than in the left hemisphere, suggesting that the right hemisphere has predominance over the left in the processing activity associated with P300m. There were no significant differences among the six stimulus combinations in evoking those P300m sources. The results of the present study suggest that the MUSIC algorithm could be a useful tool for analysis of the time-course of P300m.
Keywords
event-related potential
laterality
magnetencephalography
mesial temporal lobe
multiple signal
P300
parietal lobe
superior temporal lobe
Note
http://dx.doi.org/doi:10.1111/j.1440-1819.2006.01578.x
Published Date
2006-09-30
Publication Title
Content Type
Thesis or Dissertation
Grant Number
甲第3234号
Granted Date
2006-09-30
Thesis Type
Doctor of Philosophy in Medical Science
Grantor
岡山大学
Official Url
http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=17109697&dopt=Abstract
language
日本語
File Version
none
Refereed
Unknown