Lecture 2-Outline

Lecture 2-Outline - Experimental Psychology Learning...

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1/28/10 Experimental Psychology- Learning Elicited Behavior and Repeated Stimulation Lecture 2 Outline II. Definitions A. Stimulus (plural: stimuli) (n) - any physical event, combination of events, or relation among events. An agent, action or condition that elicits or accelerates a physiological or psychological response for example M.C Hammer, shark, burrito B. Response (n) - a unit of behavior; a discrete and usually reoccurring segment of behavior for example hammer time, heart race, and salivation C. Elicit (v) - to call forth, draw out, or provoke- part of stimulus response relationship III. Elicited Behavior - Reflexes Elicited Behavior- behavior that occurs in response to specific environmental stimuli Reflexes are the simplest form of elicited behavior: for example knee tap-kick and loud noise- startle and the response rarely occurs without the specific stimulus A. Reflex Arc- reflex circuitry- sensory neuron that stops in the spinal cord in the CNS and may synapse with an interneuron which is in CNS which leads to motor neuron and reflex- changes must occur in the interneuron to satisfy our definition of learning B. Reflex Characteristics- a specific stimulus often elicits a unique response (anatomical specificity). Reflexes can be modified by the brain, even the simple startle reflex goes to the brain, and this is different from what Descartes thought because he thought they were permanent. Reflexes are adaptive for example flexion vs. extension (muscles). Reflexes can change with development: grasping, rooting reflex, respiratory occlusion reflex (head withdrawal, face wipe, and cry) if feel in dangerous situation. IV. Elicited Behavior- Modal Action Patterns (MAPs) - (try to come up with own examples) Simple reflexes often occur across species (startle, eye blink). Tinbergen and Lorenz: They found even in young orderly sequences of reflexive behavior served
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Lecture 2-Outline - Experimental Psychology Learning...

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