AP PSYCHOLOGY

Detailed explanation-1: -a-Olds and Milner experimented with rats to study which area of the brain is involved in rewards. They found that the hypothalamus is the reward center that coordinates interest in pleasant stimuli with the physiological states of the body.

Detailed explanation-2: -Olds and Milner discovered the reward mechanisms in the brain involved in positive reinforcement, and their experiments led to the conclusion that electrical stimulation could serve as an operant reinforcer.

Detailed explanation-3: -Reward pathways in the brain Dopamine is mostly produced in an area of the brain called the ventral tegmental area (VTA), located within the midbrain.

Detailed explanation-4: -The most important reward pathway in brain is the mesolimbic dopamine system, composed of the VTA (ventral tegumental area) and NAc (nucleus accumbens). This (VTA-NAc) circuit is a key detector of a rewarding stimulus.