PSYC 210 Chapter Notes - Chapter 3: Neural Adaptation, Visual Cortex, Action Potential

• School: University of Victoria
• Department: Psychology
• Course: PSYC 210
• Professor: Bub Daniel

Document Summary

Helmholtz = nerve impulse travels about 57 miles per hour. Take a few milliseconds for an electrical impulse to move between neurons. Visual system always has to compute a solid object given definite limitations that the eye is able to obtain = inferring a third dimension. Different objects at different orientations, can all produce the exact same image on the retina despite the distance. Vision has to cope with information from the eye; not enough information in the physical stimulus itself to compute the shape of an object. Poverty of stimulus = implies that the visual system has to add information by constructing depth based on certain rules. Helmholtz: pe(cid:396)(cid:272)eptio(cid:374) (cid:396)e(cid:395)ui(cid:396)es a(cid:374) (cid:862)u(cid:374)(cid:272)o(cid:374)s(cid:272)ious i(cid:374)fe(cid:396)e(cid:374)(cid:272)i(cid:374)g(cid:863) = visual syste(cid:373) a(cid:272)tively (cid:272)o(cid:374)st(cid:396)u(cid:272)ts an interpretation of the retinal image. The unconscious knowledge that the visual cortex uses is domain specific. Seeing in depth = make certain assumptions about the relationship between the retinal image and objects in the world.