Wilder Penfield Was a Prominent Canadian Neurosurgeon Who Is Known

Wilder Penfield was a prominent Canadian neurosurgeon who is known to have gathered much of our knowledge of the functions of the human cerebral cortex before the advent of modern brain-imaging techniques. In particular, he found that

A) stimulation in front of the central sulcus produced movement
B) blood flow increased in the brain during different tasks
C) a lesion behind the central sulcus produced somatic sensory experiences
D) a certain area of the brain was responsible for speech
E) the frontal lobe was not completely developed until age 25