PSY 242 Chapter Notes - Chapter 16: Arcuate Fasciculus, Angular Gyrus, Auditory Cortex
Document Summary
Chapter 16 lateralization, language, and the spilt brain. Wer(cid:374)i(cid:272)ke"s area: the (cid:272)orti(cid:272)al area of la(cid:374)guage (cid:272)o(cid:373)prehe(cid:374)sio(cid:374) Sele(cid:272)ti(cid:448)e lesio(cid:374)s of bro(cid:272)a"s area produ(cid:272)e aphasia ((cid:449)hose s(cid:455)(cid:373)pto(cid:373)s are pri(cid:373)aril(cid:455) e(cid:454)pressi(cid:448)e: characterized by normal speech comprehension of both written and spoken language and by speech that retains its meaningfulness despite being slow, laboured, disjointed, and poorly articulated) Arcuate fas(cid:272)i(cid:272)ulus: the path(cid:449)a(cid:455) (cid:272)o(cid:374)(cid:374)e(cid:272)ti(cid:374)g bro(cid:272)a"s a(cid:374)d wer(cid:374)i(cid:272)ke"s areas; da(cid:373)age: (cid:272)o(cid:374)du(cid:272)tio(cid:374) aphasia (difficulty repeating words they just heard) Angular gyrus: area of left te(cid:373)poral a(cid:374)d parietal (cid:272)orte(cid:454) just posterior to wer(cid:374)i(cid:272)ke"s area; implicated in comprehending language-related visual input. Seven primary components of wernicke-geschwind model: primary visual cortex, angular gyrus, primary auditory cortex, wer(cid:374)i(cid:272)ke"s area, arcuate fasciculus, bro(cid:272)a"s area, primary motor cortex. Surgery that destro(cid:455)s all of bro(cid:272)a"s area (cid:271)ut little surrou(cid:374)di(cid:374)g tissue t(cid:455)pi(cid:272)all(cid:455) has (cid:374)o lasti(cid:374)g effects on speech. Speech problems due to postsurgical edema (swelling) rather than the excision (cutting out) of. Lesions to arcuate fasciculus did not produce permanent speech difficulties.
