To Understand Which Parts of the Human Nervous System Are

Essay

To understand which parts of the human nervous system are specialized for which specific functions, we can perform three basic classes of experiments: correlation, which tells us whether that part is active during performance of the function; loss of function, which tells us whether activity in that part is necessary for a function; and gain of function, which tells us whether activity in that part is sufficient for a function. Give a specific example of each of the following classes of experiments.
A. Loss of function
B. Gain of function
C. Correlation?