01:830:310 Lecture Notes - Lecture 17: Auditory Hallucination, Auditory Cortex, Temporal Lobe

• School: Rutgers University
• Department: Psychology
• Course: 01:830:310
• Professor: Professor Mayhew

Document Summary

Paradoxically, bilateral damage to the primary cortex does not usually lead to cortical deafness. Auditory hallucinations - when you hear one or more talking voices. One can have auditory hallucinations without having mania or schizophrenia. Research suggests that spontaneous neural activity in the auditory cortex gives rise to such hallucinations, interacting with the language areas of the temporal lobe. Conducted fmri on schizophrenic patients during auditory hallucinations. Compared results to neural activity in response to acoustic stimuli. Results: activation seen in broca"s area, primary auditory cortex, and speech zone in posterior temporal cortex. Additional limbic areas also recruited (amygdala and hippocampus) This was probably due to the engagement of memory as well as emotional responses to hallucinatory content. E. g. rapid presentation of language needs to be quickly analyzed. E. g. music has slower changes in frequency. Speech sounds come from 3 restricted ranges of frequencies (formants) Same speech sounds are different depending on spoken context but perceived as same sound.