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The conditioned emotional response is usually measured through its effect in suppressing an ongoing response. For example, a rat first learns to press a lever through operant conditioning. Classical conditioning follows: in a series of trials the rat is exposed to a CS, often a light or a noise. Each CS is followed by the US, an electric shock.
It may also be called "conditioned suppression" or "conditioned fear response (CFR)." [1] It is an "emotional response" that results from classical conditioning, usually from the association of a relatively neutral stimulus with a painful or fear-inducing unconditional stimulus. As a result, the formerly neutral stimulus elicits fear.
Classical conditioning occurs when a conditioned stimulus (CS) is paired with an unconditioned stimulus (US). Usually, the conditioned stimulus is a neutral stimulus (e.g., the sound of a tuning fork), the unconditioned stimulus is biologically potent (e.g., the taste of food) and the unconditioned response (UR) to the unconditioned stimulus is an unlearned reflex response (e.g., salivation).
This conditioned fear response, therefore, elicits a strong physical and emotional response (violently shaking). Generalization of Fear.
The theory assumes that this pairing creates an association between the CS and the US through classical conditioning and, because of the aversive nature of the US, the CS comes to elicit a conditioned emotional reaction (CER) – "fear." b) Reinforcement of the operant response by fear-reduction.
1941 Estes and his mentor B.F. Skinner presented their analysis of anxiety, introducing the conditioned emotional response (CER)/conditioned fear response (CFR) paradigm, [8] where rats were trained to respond on an operant schedule that produced a steady response rate, after which they were tested with an electric shock stimulus that was conditioned as a fear signal.
Variable ratio schedule (VR): [8] A procedure in which reinforcement comes after a number of responses that is randomized from one reinforcement to the next (e.g. slot machines). The lower the number of responses required, the higher the response rate tends to be.
Chemistry, not moral failing, accounts for the brain’s unwinding. In the laboratories that study drug addiction, researchers have found that the brain becomes conditioned by the repeated dopamine rush caused by heroin. “The brain is not designed to handle it,” said Dr. Ruben Baler, a scientist with the National Institute on Drug Abuse.