DocumentCode :
3685467
Title :
Activity in the left auditory cortex is associated with individual impulsivity in time discounting
Author :
Ruokang Han;Taiki Takahashi;Akane Miyazaki;Tomoka Kadoya;Shinya Kato;Koichi Yokosawa
Author_Institution :
Graduate school of Letters, Hokkaido University, Sapporo, 060-0810, Japan
fYear :
2015
Firstpage :
6646
Lastpage :
6649
Abstract :
Impulsivity dictates individual decision-making behavior. Therefore, it can reflect consumption behavior and risk of addiction and thus underlies social activities as well. Neuroscience has been applied to explain social activities; however, the brain function controlling impulsivity has remained unclear. It is known that impulsivity is related to individual time perception, i.e., a person who perceives a certain physical time as being longer is impulsive. Here we show that activity of the left auditory cortex is related to individual impulsivity. Individual impulsivity was evaluated by a self-answered questionnaire in twelve healthy right-handed adults, and activities of the auditory cortices of bilateral hemispheres when listening to continuous tones were recorded by magnetoencephalography. Sustained activity of the left auditory cortex was significantly correlated to impulsivity, that is, larger sustained activity indicated stronger impulsivity. The results suggest that the left auditory cortex represent time perception, probably because the area is involved in speech perception, and that it represents impulsivity indirectly.
Keywords :
"Correlation","Visualization","Speech","Psychology","Brain","Fitting","Position measurement"
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2015 37th Annual International Conference of the IEEE
ISSN :
1094-687X
Electronic_ISBN :
1558-4615
Type :
conf
DOI :
10.1109/EMBC.2015.7319917
Filename :
7319917
Link To Document :
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