PSY384H5 Lecture Notes - Lecture 11: Arcuate Fasciculus, Speech Perception, Temporal Lobe
Document Summary
Two main causes of language loss: head injury, stroke, blood vessel in the brain becomes blocked by a blood clot. Bursts because of weakening of the blood vessel walls. Blood supply to brain cells is interrupted and cell death results. Aphasia: disturbance of language usage or comprehension, due to some form of trauma, trauma resulting in aphasia almost always to left side. It may involve the impairment of the power to speak, write, read, gesture, or comprehend spoken, written, or gestured language: two main types of aphasia, broca"s area (more frontal area) Content versus function words (function words: a, the, etc) Anomia (they can"t come up with words for things a lot; tip of the tongue phenomena) Depending on size of the damage may exhibit general motor impairments: wernicke"s area (more in temporal lobe) No problem in producing speech at normal speaking rate. Fluent (fluent aphasics) neologisms (made up words)
