Deep-brain stimulation involves the implantation of ________ into the cortex.

A) DNA
B) lithium
C) electrodes
D) stem cells

Deep-brain Stimulation

A medical treatment involving the implantation of a device that sends electrical impulses to specific parts of the brain to treat neurological disorders.

Electrodes

Conductive pads or probes used to measure electrical activity in the body or to deliver electrical stimulation.

Cortex

refers to the outer layer of the brain involved in numerous higher-level functions including thought, memory, consciousness, and language.