{"pk":25900,"title":"Body-centric and world-centric components of the large-scale horizontal-vertical\nillusion","subtitle":null,"abstract":"In the classic horizontal vertical illusion (HVI), vertical lines appear 5-6% longer than horizontal lines. However,\nin outdoor scenes vertical poles of several meters appear as much as 25% longer than frontal ground extents. This large-scale\nHVI is consistent with angular scale expansion theory (Durgin & Li, 2011). It is known that the classic HVI is yoked to\nthe reference frame of the eye itself, such that the illusion reverses when the observer is on his or her side. In a series of\nexperiments conducted both in real outdoor spaces and in immersive virtual environments we examined how the large-scale\nHVI was affected by reorienting the observer, and found that the large scale HVI was reduced, but not reversed. The amount of\nreduction was quantitatively consistent with a retinotopic contribution of the classical HVI (6%). Most of the large-scale HVI\nis world-centric.","language":"eng","license":{"name":"","short_name":"","text":null,"url":""},"keywords":[],"section":"Member Abstracts","is_remote":true,"remote_url":"https://escholarship.org/uc/item/8bh7s3cc","frozenauthors":[{"first_name":"Frank","middle_name":"","last_name":"Durgin","name_suffix":"","institution":"Swarthmore College","department":""},{"first_name":"Zhi","middle_name":"","last_name":"Li","name_suffix":"","institution":"Swarthmore College","department":""},{"first_name":"Brennan","middle_name":"","last_name":"Klein","name_suffix":"","institution":"Swarthmore College","department":""}],"date_submitted":null,"date_accepted":null,"date_published":"2015-01-01T18:00:00Z","render_galley":null,"galleys":[{"label":"PDF","type":"pdf","path":"https://journalpub.escholarship.org/cognitivesciencesociety/article/25900/galley/15524/download/"}]}