PSY 449 Lecture Notes - Lecture 10: Vocal Tract, Language Disorder, Paraphasia

• School: University of Oregon
• Department: Psychology
• Course: PSY 449
• Professor: Christina Karns

Document Summary

Left hemisphere does poorly for perceptual tasks (angular perception) Problem with speech comprehension (word salad: (cid:862)bla(cid:271)(cid:271)er(cid:373)outh(cid:863) but it makes no sense, word storage. Conduction aphasia: patients show intact comprehension without the ability to repair error or repeat. Arcuate fasciculus is involved: cant repeat words when asked to, cant repair errors in own speech, disconnection between what she is told to do and what she actually does. Production of sound speech requires fine control of a vocal apparatus (vocal tract) Key dissociations fluent vs. non-fluent speech: speech productions vs understanding, speech vs. writing vs. mere motor deficits, basic neuroanatomy, (cid:271)ro(cid:272)a"s area, (cid:449)er(cid:374)i(cid:272)ke"s area, arcuate fasciculus. Disorders of comprehension: poor auditory comprehension, e. g. word deafness, poor visual comprehension, e. g. ale(cid:454)ia (cid:894)(cid:272)a(cid:374)"t read) Disorders of production: poor articulation (apraxia, word-finding deficit (anomia, unintended words (paraphasia) loss of grammar and syntax inability to repeat low verbal fluency inability to write (agraphia) loss of tone in voice (aprosidia)