Which neural circuits are primarily implicated in classical (Pavlovian) conditioning, and what is a classic example?

Which neural circuits are primarily implicated in classical (Pavlovian) conditioning, and what is a classic example?

• A. Amygdala and cerebellum; Tone predicting food.
• B. Basal ganglia and nucleus accumbens; Lever press for food.
• C. Prefrontal cortex and hippocampus; Light predicting shock.
• D. Primary motor cortex and somatosensory cortex; Running avoidance.

Answer: (A)

Pavlovian conditioning relies on forming associations between a neutral cue and an outcome, with brain circuits that support this learning including the amygdala, which assigns emotional or significance value to cues, and the cerebellum, which handles reflexive, motor-type conditioned responses. A classic illustration is a neutral tone that is repeatedly paired with food; after conditioning, the tone alone elicits a conditioned response such as salivation or anticipatory behavior, because the tone has become predictive of the food. The other brain regions listed are more tied to other forms of learning—basal ganglia and nucleus accumbens with instrumental or reward-driven actions, prefrontal cortex and hippocampus with higher-order memory and contextual processing, and primary motor and somatosensory cortices with movement and sensation. Thus, the combination of the amygdala and cerebellum paired with a tone predicting food best captures Pavlovian conditioning and its classic demonstration.

Pavlovian conditioning relies on forming associations between a neutral cue and an outcome, with brain circuits that support this learning including the amygdala, which assigns emotional or significance value to cues, and the cerebellum, which handles reflexive, motor-type conditioned responses. A classic illustration is a neutral tone that is repeatedly paired with food; after conditioning, the tone alone elicits a conditioned response such as salivation or anticipatory behavior, because the tone has become predictive of the food. The other brain regions listed are more tied to other forms of learning—basal ganglia and nucleus accumbens with instrumental or reward-driven actions, prefrontal cortex and hippocampus with higher-order memory and contextual processing, and primary motor and somatosensory cortices with movement and sensation. Thus, the combination of the amygdala and cerebellum paired with a tone predicting food best captures Pavlovian conditioning and its classic demonstration.