Difference of Spatiotemporal Human Brain Activities on Recalling Some Fruit Names

The authors have measured electroencephalograms (EEGs) from subjects observing images of fruit and recalling them silently. The equivalent current dipole source localization (ECDL) method has been applied to those event related potentials (ERPs): averaged EEGs. ECDs were localized to the primary visual area V1 around 100 ms, to the ventral pathway (TE) around 270 ms, to the parahippocampal gyrus (paraHip) around 380 ms. Then ECDs were localized to the Broca’s area around 450 ms, to the fusiform gyrus (FuG) around 600 ms, and again to the Broca’s area around 760 ms. Process of search and preservation in the memory has been done from the result of some ECDs to the paraHip. From the results of the present experiment, we supposed that long (not normal) visual shape stimulus processed on the Wernicke’s area after through the angular gyrus (AnG), but that round shape (normal) visual stimulus processed on the Wernicke without passing through the AnG.