Surgeon Wilder Penfield Systematically Applied Tiny Currents to the Brains

Multiple Choice

Surgeon Wilder Penfield systematically applied tiny currents to the brains of conscious patients with epilepsy to determine which areas of the brain responded normally and which were damaged. Penfield used the technique of _____ to map the specific functions of the somatosensory cortex.

A) transcranial magnetic stimulation
B) electrostimulation of the brain
C) electroencephalography
D) functional magnetic resonance imaging