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Conditioned Inhibition

Conditioned Inhibition. Conditioned inhibition is an internal state that prevents an organism from making some response, like salivation. As an intervening variable, it must be operationally defined.

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Conditioned Inhibition

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  1. Conditioned Inhibition Conditioned inhibition is an internal state that prevents an organism from making some response, like salivation. As an intervening variable, it must be operationally defined. To say that that an organism has acquired a conditioned inhibitory response, two tests must be passed: (1) retardation test; (2) summation test. In these examples, there are 2 CSs: CSB CSC clicks

  2. Conditioned Inhibition Retardation Test Phase 1 Phase 2 (test) Experimental Group Inhibitory training with CSB CSB is paired with US until there is a strong CR. No experience with CSB Control Group CSB is inhibitory if it takes the Experimental Group more trials to learn a CR than it takes the Control Group. In other words, the previous inhibitory training slows down learning in the Experimental Group.

  3. Conditioned Inhibition Why Does the Experimental Group Learn More Slowly? The Control Group starts at 0. Excitation + Going from Trial 1 to Trial 5, the level of excitation increases. Tendency to Salivate to CSB 0 - Inhibition

  4. Conditioned Inhibition Why Does the Experimental Group Learn More Slowly? The Experimental Group starts below 0. Excitation + It takes extra trials to bring them up to 0, then more trials to raise the level of excitation. Tendency to Salivate to CSB 0 - Inhibition

  5. Conditioned Inhibition Summation Test The logic is as follows: If you combine a positive value (like +9) with a negative value (like –4), the sum will be lower than the positive value alone. The positive value is an “excitatory” CS, a CS that has been paired with the US. The negative value is an “inhibitory” CS, a CS that has been used in some form of inhibitory training. CSC clicks Excitatory stimulus: Inhibitory stimulus: CSB

  6. Conditioned Inhibition Summation Test Phase 1 The Experimental Group receives inhibitory training with CSB . The Control Group receives no training with CSB .

  7. Conditioned Inhibition Summation Test Phase 2 clicks Both groups receive pairings between CSC and the US until there is a strong CR.

  8. Conditioned Inhibition Summation Test Phase 3 CSB and CSC are combined and presented together for a few trials without the US. If CSB is inhibitory, the CR should be weaker in the Experimental group than in the Control group. This is because CSB is neutral (has a value of 0) for the Control group but has a negative value for the Experimental group. Combining a negative CS with a positive CS produces less excitation than combining a neutral CS with a positive CS.

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