BIO SCI 38 Lecture Notes - Lecture 23: Cochlear Implant, Prosthesis, Neuroprosthetics
5 Sep 2016
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Document Summary
An experimental approach in which scientists establish a direct communication pathway between the brain and an external device. The main objective of this approach is to: 1. Understand how the brain processes information: restore sensory, motor, or cognitive function. Bcis are based on information gathered using electrophysiological techniques. The idea is to mimic the brain (or nerve) signals that are naturally going on as you perceive sensory information or produce motor movements. Sensory prosthetic the device sends the brain input it can understand, so the brain can perceive or fell from the device. Motor prosthetic the device interprets the brain (or nerve) activity producing movements to control robotic limbs. Invasive bcis electrodes are implanted directly into the brain: highest accuracy, higher surgical risk, low long-term stability. Prone to scare tissue buildup and loss of signal over time. Partially invasive bcis electrodes are placed into the skull but outside of the brain: high accuracy, lower surgical risk, good long-term stability.
