Spatiotemporal Human Brain Activities on Recalling Names of Body Parts
Takahiro Yamanoi*1, Yoshinori Tanaka*2, Mika Otsuki*3,
Shin-ichi Ohnishi*4, Toshimasa Yamazaki*5, and Michio Sugeno*6
*1Department of Life Science and Technology, Hokkai-Gakuen University, W11, S26, Center ward, Sapporo, Hokkaido 064-0926, Japan
*2Graduate School of Engineering, Hokkai-Gakuen University, W11, S26, Center ward, Sapporo, Hokkaido 064-0926, Japan
*3Faculty of Health Sciences, Hokkaido University, W5, N12, North ward, Sapporo, Hokkaido 060-0812, Japan
*4Faculty of Engineering, Hokkai-Gakuen University, W11, S26, Center ward, Sapporo, Hokkaido 064-0926, Japan
*5Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka, Fukuoka 820-8502, Japan
*6European Center for Soft Computing, Edificio Cientifico Technologico, c/ Gonzalo Guterrez Quiros, s/n 33600 Mieres-Asutrias, Spain
The authors measure electroencephalograms (EEGs) from a subject looking at line drawings of body parts and recalling their names silently. The equivalent current dipole source localization (ECDL) method is applied to the event related potentials (ERPs): summed EEGs. As the dominant language area of the subject is considered to be in the right hemisphere in the previous research study, ECDs are localized to the right middle temporal gyrus: the angular gyrus. Then ECDs are localized to the right fusiform gyrus, the right middle temporal pole (TEP), and the right inferior temporal white matter (TWM). ECDs are located in the ventral pathway. The areas are related to the integrated process of visual recognition of pictures and the recalling of words. Some of these areas are also related to image recognition and word generation.
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