Neurostimulation and safe charge density, the electrode-tissue interface, deep brain stimulation targets, and cochlear implant sound processing.
Every neurostimulation device must deliver electrical charge to excitable tissue reliably enough to depolarize target neurons without causing irreversible electrochemical damage at the electrode surface, and the governing engineering constraint is charge density — charge per pulse divided by electrode surface area — which this module builds alongside the charge-balanced biphasic pulse designs virtually all clinical systems use to stay under material- and tissue-specific safety limits.
It then covers the electrode-tissue interface's impedance behavior and electrode material selection, deep brain stimulation's anatomical targets and proposed mechanisms of action, and cochlear implant sound processing's tonotopic mapping strategy, closing by tying neural device design back to the biomaterials framework in Module 4 and the biosignal instrumentation principles in Module 6.