Investigation of microscopic functional specificity using multi-echo-train EPI
Daehun Kang 1,2 , Yul-Wan Sung 1 , Uk-Su Choi 3 , and Seiji Ogawa 1
Kansei Fukushi Research Center, Tohoku
Fukushi University, Sendai, Miyagi, Japan,
School of Information Sciences, Tohoku University,
Sendai, Miyagi, Japan,
Institute, Gachon University of Medicine and Science,
A functional area of a human brain is usually activated
by multiple stimuli, and category-selective areas (i.e.
fusiform face area & parahippocampal place area) are
also activated by a non-preferred stimulus as well as
the preferred stimulus. With using conventional fMRI
method, it is difficult to know whether all of the
neurons in activated areas respond to both the preferred
and non-preferred stimuli or whether a part of neuronal
population is separately activated by each stimulus. In
the present study, we measured fMRI responses using
multi-echo-train echo-planar-imaging to discriminate the
neuronal populations in a functional area.
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