Abstract
The moment which we come across some good idea is so-called "aha!" moment. When we find out the target in the visual search task, we would get a impression of "aha!" Since the moment is, in other word, the moment of getting an inspiration, we can not expect when such a modality-independent moment comes out. We have observed multi-channel MEG during a few second up to the moment of "aha!" in order to understand how the localized activities move around the whole brain as related to the moment of "aha!" The results of analysis suggest equivalent current dipoles thus the localized neural activities appear in the superior frontal gyrus and anterior cingurate gyrus during the moment of "aha!".