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744

f$r~Ji§~ • 47 ~ 5 % · 2003 ~ 10 Jj

Abstract
Language functions revealed by neuroimaging
Ryuichiro Hashimoto, Kuniyoshi L. Sakai
from

Department of Cognitive and Behavioral Science, Graduate School ofArts and Sciences,
The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo 153-8902, Japan.
We review recent progress in fMRI studies for two topics of language processing : speech recognition and syn­tactic processing. First, with a dichotic listening task, we showed that auditory language systems may be function­
ally differentiated into multiple pathways for speech recognition. Second, by contrasting syntactic decision andshort-term memory tasks, we found that regions in the left prefrontal cortex are specialized for sentence compre­
hension. Future fMRI studies together with other imaging methodologies will further clarify dynamic cortical net­
works for linguistic computations.
(Received: May 29,2003)
Shinkei Kenkyu no Shinpo (Advances in Neurological Sciences), Vol. 47, No.5, pp735-744, 2003.
IGAKU-SHOIN Ltd., Tokyo, Japan.