The Substantia Nigra

question 296

Multiple Choice

The substantia nigra:

• A)contains dopamine-producing neurons and is involved in motor control.
• B)is the region that has shown the greatest degree of neurogenesis in humans.
• C)is the primary communication link between the left and right cerebral hemispheres.
• D)does not fully develop until late adolescence.

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Definitions:

Higher-order Conditioning

A form of learning in which a stimulus is paired with a previously conditioned stimulus, creating a new conditioned response.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, eventually comes to trigger a conditioned response.

Neutral Stimulus

A stimulus that initially produces no specific response other than focusing attention; in classical conditioning, it becomes associated with an unconditioned stimulus.

Operant Conditioning

A method of learning that occurs through rewards and punishments for behavior, emphasizing the effects of consequences on behavior.