PSYC 3312 Lecture Notes - Lecture 4: Parahippocampal Gyrus, Optical Flow, Wayfinding
Document Summary
How movement creates perceptual information we use to navigate our environment. In ecologically valid experiment matches its stimuli conditions and procedures to those present in the natural world (trying to make more realistic: the moving observer perso(cid:374) is the (cid:862)(cid:373)o(cid:448)i(cid:374)g o(cid:271)ser(cid:448)er(cid:863) Optic flow the movement of the observer creates the movement of objects in the scene relative to observer (look at picture in slide) 2 characteristics of optic flow: gradient of flow. If so(cid:373)ethi(cid:374)g is (cid:272)loser to (cid:455)ou the(cid:374) it"s goi(cid:374)g to look like it"s (cid:373)o(cid:448)i(cid:374)g faster (cid:271)ut if it"s further away, then it looks like it"s (cid:373)o(cid:448)i(cid:374)g further away (like (cid:449)he(cid:374) (cid:455)ou"re driving: focus of expansion. No flow at the destination of movement. E(cid:454)> o(cid:374) a ru(cid:374)(cid:449)a(cid:455) s(cid:373)all red dot is (cid:449)here the pla(cid:374)e (cid:449)ill land. Movement (car moving) creates flow flow (object moving relative to car) provides info for guiding further movement starts over again. Ex> gymnasts performed worse with eyes closed.
