01:830:310 Lecture Notes - Lecture 17: Cochlear Implant, Sensorineural Hearing Loss, Temporal Lobe
12 Feb 2018
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Document Summary
Microphone on the outside of the ear filters and amplifies sounds. Speech processor filters for speech sounds transmitter sends info into the implant inside of the ear through a cable into the cochlea. Stimulator has an array of electrodes across the basilar membrane that stimulate different parts of it for different sounds. Need a functioning vestibulocochlear nerve because action potential comes out of it. Problem with sound processing is usually result of bilateral lesion of the primary auditory cortex. Does not usually lead to cortical deafness. What does the research of dierks et. al. (1999) show? research suggests that spontaneous neural activity in the auditory cortex gives rise to such hallucinations, interacting with the language areas of the temporal lobe. Most often people who suffer from schizophrenia. Auditory cortex has spontaneous neuron firings (give rise to such tend to be negative regarding self hallucinations), interpreted by areas around as sentences.
