Lec 6 part2 Flashcards
type of rewards
biological
social psychology
needs driven - goals attained to satisfy need or deficiency (eating when hungry)
incentive driven - goals attained because of pleasure not necessarily physiological needs
types of motivated behaviour
approach - individual seeks to get close to goal, behaviour terminates once goal is reached
avoidance (active = do behaviour to avoid bad stimulus, studying to avoid fail), (passive = inhibition of behaviour to avoid unpleasant stimulus, not raising hand to avoid embarrassment).
motivation main phases
motivation phase - work to attain reward
consummation phase - evaluate rewards, if better than expected motivation will go up, if no will go down
amygdala
link to fear and aggression.
connect to early sensory and higher cognitive areas.
(sensory jerk to seeing something that looks like snake)
striatum
underlies wanting phase in motivation
responsible for motivated movement aimed at incentives
nucleus accumbens
major dopamine structure
dopamine released to striatum in cue of reward, release more if reward if attained.
oribtofrontal cortex
above eyes, ventral surface
responsible for evaluating stage (hedonic value), OFC activity correlated with desire for given reward (something with strong hedonic value high OFC activity)
habit
addiction follows as formation of habit serve to attain reward.
habit is inflexible and goal directed wanting outcome of behaviour to be reinforced. Striatum involved in strengthening habit. striatum loses strength of habit when value of reward is lost.
addiction
habit drug used despite adverse effects on health and social life
many drugs can break through blood brain barrier
drug tolerance
more exposure need higher dose to produce same reward
dependance
sudden elimination of drug causing withdrawal effect.
