Sensitization

Dual Process Theory

Repeated events always lead to the process underlying both sensitization and habituation. Both processes occur in response to every stimulation present.Strengthens the response to S on a given presentation; Both sensitization and habituation processes change over time such that the largest effects of repetition occur early on.

Sensitization v. Habituation

S: Repeat exposure can heighten reflexes, Shock H: Repeat exposure demurs reflexes, Loud noise

Aplysia

Tail shock activates sensory neuron T->activates sensory neuron M->Motor response. Simultaneous T activates internueron In-> Delivers a neuronmodulator to the axons of neurons S & U. S-> Larger release of neurotransmitter->greater activation of neuron M than was previously envoked by M

Sensitization

A phenomenon in which an experience with an arousing stimulus leads to stronger responses to a later stimulus; Repeat exposures are required

Opponent Process Theory

A way that organisms maintain stability; Emotional processes 1) Pleasurable 2) Less Pleasurable; Combined result of the two independent processes.