An evoked potential (or "evoked response") is an electrical potential recorded from the nervous system of a human or other animal following presentation of a stimulus, as distinct from spontaneous potentials as detected by electroencephalography (EEG) or electromyography (EMG).

Evoked potential amplitudes tend to be low, ranging from less than a microvolt to several microvolts, compared to tens of microvolts for EEG, millivolts for EMG, and often close to a volt for ECG. To resolve these low-amplitude potentials against the background of ongoing EEG, ECG, EMG, and other biological signals and ambient noise, signal averaging is usually required. The signal is time-locked to the stimulus and most of the noise occurs randomly, allowing the noise to be averaged out with averaging of repeated responses.

Signals can be recorded from cerebral cortex, brain stem, spinal cord and peripheral nerves. Usually the term "evoked potential" is reserved for responses involving either recording from, or stimulation of, central nervous system structures. Thus evoked compound motor action potentials (CMAP) or sensory nerve action potentials (SNAP) as used in nerve conduction studies (NCS) are generally not thought of as evoked potentials, though they do meet the above definition.

Derrick D. Coleman (born June 21, 1967) is a retired American basketball player in the NBA. Coleman grew up and attended high school in Detroit, Michigan and attended college at Syracuse University. He was selected first overall in the 1990 NBA Draft by the New Jersey Nets.

Throughout his career, the left-handed Coleman was an effective low post scorer with a reliable perimeter shooting touch, averaging 16.5 points and 9.3 rebounds. He enjoyed his best years as a member of the New Jersey Nets, where he averaged 19.8 points and 10.6 rebounds per game. When Coleman entered the NBA, he was compared to elite power forwards such as Karl Malone and Charles Barkley, and expected to put up similar numbers, only with the added ability to shoot from three-point range. Instead, his career was overshadowed by his questionable attitude (lack of work ethic resulting in excessive weight gain, plus alcohol abuse and general disruptive behavior), and his penchant for injury which saw him play 70 or more games in only four of his 15 NBA seasons. Sports Illustrated once remarked that "Coleman could have been the best power forward ever; instead he played just well enough to ensure his next paycheck."