下記のとおり、トマス・パパトマス教授（米国ラトガーズ大学）による
視知覚におけるトップダウンの影響に関する講演会を開催します。
事前申し込みは不要、参加は無料です。なお、講演は英語で行なわれます。
日時：２０１８年３月１５日（木）１７：３０～１９：００
場所：立命館大学 大阪いばらきキャンパス、
Ｂ棟（スターバックスのある建物）４Ｆ研究会室２
アクセス：http://www.ritsumei.ac.jp/accessmap/oic/
講師：Thomas Papathomas, Ph.D.
Professor, Department of Biomedical Engineering
Director of the Laboratory of Vision Research
Rutgers University, U.S.A.
演題：Converging evidence for top-down influences in visual perception
要旨：
One of the oldest hypotheses in vision is that what we perceive does not depend only on the signals that come in through our eyes, but also on the state of the observer, experience-based stored knowledge (in the form of rules or of specific knowledge of objects), suggestions from others, etc. What we perceive is not a passive process, akin to a video camera, but it is the product of active processing of the data coming through our eyes. It appears that the visual brain makes hypotheses, based on the input signals, about what is out there and then tests these hypotheses against the incoming data. It is only when this interaction of the data processing mechanisms and top-down analysis converge that we achieve a stable percept. I will present evidence from studies in perception under altered states, in pathologies, bistable illusions, impoverished ambiguous stimuli and brain imaging that supports this hypothesis.
講演に関するお問い合わせ先：森川和則 morikawa[at]hus.osaka-u.ac.jp
（[at]を＠に変更して下さい）
