What would cause a rat to become "lazy" and be less likely to exert effort to obtain rewarding stimuli?

Name: What would cause a rat to become "lazy" and be less likely to exert effort to obtain rewarding stimuli?
Brand: Quizplus
Rating: 4.9 (59 reviews)

Question

Quizplus · Accepted Answer

Dopamine antagonists reduce the effects of dopamine in the brain, which is crucial for the reward and pleasure centers. Lower dopamine activity can lead to decreased motivation and willingness to work for rewards, making an animal appear "lazy."

What Would Cause a Rat to Become "Lazy" and Be