Textbook Notes (368,795)
Canada (162,165)
Psychology (1,978)
PS261 (109)
Chapter 2

Chapter 2.docx

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Anneke Olthof

LearningChapter 2Nature of elicited behaviouroIrritation of respiratory passages causes sneezing and coughingoBehaviour occurs in response to stimuli elicitedElicited behaviourreflexive behaviouroConcept of the reflexInvolves two closely related eventseliciting stimulus and corresponding responseostimulus and response are linkedspecificity of relation between stimulus and accompanying reflex response is consequence of nervous system organizationenvironmental stimulus for reflex activates sensory organ afferent neurontransmits sensory message to spinal cordoneural impulses related to motor neuron efferent neuronactivates muscles involved in reflex responsesensory and motor neurons rarely communicate directlyimpulses from one to other are relayed through at least one interneuronneural circuitry ensures that particular sensory neurons are connected to corresponding set of motor neuronsrestricted wiringrestricted set of stimuli elicits particular reflex responsereflex arcafferent neuron interneuron and efferent neuronrepresents fewest neural connections necessary for reflex actionrespiratory occlusion reflexstimulated by reduction of air flow to babyowhen cloth covers babys face or accumulation of mucus in nasal passagesoreactionspull head backfacewiping motioncrying involves vigorous expulsion of airessential for survivaloModal action patternsSimple reflex responses are evident in many speciesPapillary constriction to bright lightMammalian infants suck in response to object being placed near mouthHerringgull chicks just as dependent on parental feedingoChecks peck at tip of parents billParents regurgitateChicks peck regurgitated foodModal Action PatternsMAPResponse sequences typical of a particular species of particular species Speciestypical modal action patterns identified in many aspects of animal behaviourSexual behaviourTerritorial defenseAggressionPrey capture1
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