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In a shuttle box,a dog first learns,through classical conditioning to fear the buzzer because the buzzer is associated with shock.Each time the buzzer sounds,the dog becomes fearful of the upcoming shock.By jumping to the "safe" compartment,the dog can end the unpleasant fear it feels.This "jumping" to reduce the fear and shock occurs due to
Norepinephrine
A neurotransmitter and hormone involved in the body's fight or flight response, affecting attention and responding actions.
Unipolar Depression
A mood disorder characterized by a persistent feeling of sadness or lack of interest, not cycling with manic episodes.
Endogenous Depression
A depression that appears to develop without external reasons and is assumed to be caused by internal factors.
Reactive Depression
A depression that appears to be triggered by clear events. Also known as exogenous depression.
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