Incentive-sensitization theory (Berrigde and Robinson)

Question 1

Incentive-Sensitization theory

Answer 1

Liking goes down but wanting increases. Extreme craving thats not necessarily experienced consciously, triggered by cues together with impaired cognitive control

Question 2

Neural sensitisation

Answer 2

Changes in the mesolimbic pathway causing it to be hyperreactive to the incentive effect of drugs and drug related cues.

Question 3

Behaviourally expressed in 4 ways

Answer 3

Drug ass stimuli elicit attention and approach towards them (motivational magnets)

Drug ass stimlui become reinforcers in their own right

Drug ass stimuli can induce relapse

Increased motivation to work for the drugs (break point increases)

Question 4

Conditioned place preference paradigm

Answer 4

This studies how stimuli become motivational magnets:

Dopamine is implicated in a place, after conditioning, the experimental group showed preference for location associated w dopamine increase. (also in dot probe task in humans

Question 5

Conditioned reinforcement

Answer 5

Drug ass stimulus has acquired the capacity to reinforce behaviours through its learned CS-US association