PSY372H1 Study Guide - Final Guide: Primary Progressive Aphasia, Domestic Canary, Semantic Dementia
Document Summary
Chapter 7 semantic memory & stored knowledge. Semantic memory ltm information about work, general knowledge (words, facts) | can be used without reference to when/where information is learned. Semantic dementia progressive neurodegenerative disorder, deterioration of semantic memory in verbal & non-verbal domains. Loss of word meaning = primary progressive aphasia. Organization of categories giving category then letter = faster to think of word (fruit-p faster than p-fruit) A(cid:272)ti(cid:448)ate (cid:272)atego(cid:396)(cid:455) (cid:858)f(cid:396)uit(cid:859) the(cid:374) sea(cid:396)(cid:272)h, a(cid:272)ti(cid:448)ate (cid:272)atego(cid:396)(cid:455) (cid:858)p (cid:449)o(cid:396)ds(cid:859) too la(cid:396)ge. Semantic network models (cid:862)(cid:272)o(cid:374)(cid:272)ept (cid:373)ap(cid:863) g(cid:396)aph (cid:396)elatio(cid:374)ship (cid:271)et(cid:449)ee(cid:374) (cid:272)o(cid:374)(cid:272)epts/ideas. Semantic dementia patients recall fewer remote autobiographical memories, same recent memories. Sensory & perceptual information enough to recall recent episodic memories. Semantic information needed as framework to retrieve remote episodic memories (1) hierarchical network model. Experiment: answer if sentence t/f, faster to answer if closer levels on hierarchy. Property/feature = same level of hierarchy as associated concept (canary = yellow) Semantic relatedness, measured by how closely people think pairs of words are related.
