PSYB65H3 Chapter 9: psyb65 chapter 9
Document Summary
Clinical focus migraines and a case of blindsight. A (cid:448)isual au(cid:396)a (cid:449)a(cid:396)(cid:374)ed of a heada(cid:272)he"s app(cid:396)oa(cid:272)h: a(cid:374) o(cid:448)al-shaped area of flashing light appeared just left of center in his field of vision. He suffered from severe migraine, the most common neurological disorder, affecting some 5-20% of the population at some time in their lives. Auras can be auditory, tactile, or visual may result in an inability to move or talk. After an aura passes, most people suffer a severe headache caused by a dilation of cerebral blood vessels. D. b"s atta(cid:272)ks left hi(cid:373) (cid:449)/a s(cid:373)all (cid:271)li(cid:374)d spot, o(cid:396) scotoma. Neurologist found that a collection of abnormal blood vessels at the back of his right occipital lobe was causing the migraine attack a most unusual case. D. b got the malformed blood vessels removed at age 30. Operation relieved his pain, but part of his occipital lobe has died so he was blind in the left half of his visual field.
