PSY 260 Chapter Notes - Chapter 4: Bigram, Agnosia, Tachistoscope

• School: Stony Brook University
• Department: Psychology
• Course: PSY 260
• Professor: Nancy Franklin

Document Summary

Apperceptive agnosia - patie(cid:374)ts (cid:272)a(cid:374) see a(cid:374) o(cid:271)je(cid:272)t"s shape a(cid:374)d (cid:272)olo(cid:396) a(cid:374)d positio(cid:374), (cid:271)ut (cid:272)a(cid:374)(cid:374)ot put the elements together to perceive the intact object. Associative agnosia - patients can see but cannot link what they see to their basic visual knowledge. Bottom-up processes - p(cid:396)o(cid:272)esses that a(cid:396)e di(cid:396)e(cid:272)tl(cid:455) shaped (cid:271)(cid:455) the sti(cid:373)ulus; (cid:862)data d(cid:396)i(cid:448)e(cid:374)(cid:863) Top-down processes - processes shaped by knowledge; (cid:862)(cid:272)o(cid:374)(cid:272)ept-d(cid:396)i(cid:448)e(cid:374)(cid:863) Visual features - vertical lines, curves, diagonals, etc. Integrative agnosia - patients can detect features in a display but have difficulty judging how the features are bound together to form complex objects. Tachistoscope - a device specifically designed to present stimuli for precisely controlled amounts of time. Mask - serves to interrupt any continued processing that participants might try to do for the stimulus just presented. How familiar a stimulus is affects how well we can recognize and remember it. A first exposure primes the participant for a second exposure; this is called repetition priming.