PSYCH 161 Lecture Notes - Lecture 1: Paraphasia, Speech Repetition, Dysarthria
Document Summary
Considered a motor planning deficits distinguishable from higher-level aphasic phonological paraphasias and lower-level dysarthrias. Relatively easy to identify by clinical impression but harder to quantify. Lower-level articulatory deficit yielding consistently distorted speech. Language disorder caused by cortical damage, typically involving the left hemisphere. Occurs in 21-38% of acute stroke patients. Strong predictor of poor quality of life in chronic stroke. Transient aphasia if only broca"s area affected. Similar to broca"s aphasia but can repeat speech. Very uncommon and probably has secondary etiology. 10-30% of aphasic patients have global aphasia. Language limited to a few words, exclamations, and serial utterances. Poor auditory comprehension and poor speech repetition. Extensive cortical damage including the major speech areas. A few case studies show smaller lesions associated with global aphasia. Extra syllables may be added to words. Often no apparent associated neurological symptoms, paresis or paralysis. Cortical damage typically involves left posterior temporal gyrus.
