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PSYC*2330 Lecture 4

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PSYC 2330
Francesco Leri

Thursday Jan 19 2011PSYC2330 Lecture 4Week Lecture 2 bExperiments performed in the Aplysia have demonstrated that habituation is caused byaincrease in withdrawal reexive reactionsreduction of interest in the taskbreduction of pool of synaptic vesiclescdexpression of synaptic extracellular potassiumincrease in intracellular sodiumeAnswer C Hull argued that there is only one type of driveDrive is a general pool of energy that can activate innate and learned behaviourThere are several sources of drive but drive itself is nonspecic and nondirectivethere are different kind of needs when you experience a specic need the drive and the stimulus drive are activated at the same time eg the noise your stomach makes when youre hungrythe drive is energizing general activity and will activate previous habits and new learningyou go around and drink water and try things to satisfy you and nd out its foodyou learn something new so the next time you have the same type of energy and stimulation you will know that you need foodyou strengthen the relationship between the stimulus and the responseonce you nd out whats appropriate to do it becomes much easierIncentive MotivationHull eventually realized that the characteristics of the goal objects inuence the motivation of the organismsErsHr x D x K
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