UW-Madison PSYCH 454 - Exam 2 Study Guide (45 pages)

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Exam 2 Study Guide



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Exam 2 Study Guide

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Pages:
45
Type:
Study Guide
School:
University of Wisconsin, Madison
Course:
Psych 454 - Behavioral Neuroscience
Behavioral Neuroscience Documents

Unformatted text preview:

Psych 454 1st Edition Exam 2 Study Guide Lec 14 I II III IV V Intro A Anosmia loss of smell 1 5 of general population B Olfactory organ 1 Olfactory epithelium olfactory receptor cells ORCs supporting cells basal cells 2 Cribriform plate a thin sheet of bone through which small clusters of axons penetrate coursing to the olfactory bulb Signal transduction A Odorants bind to specific receptors cAMP binds to cation channels influx of Na and Ca2 Ca2 activated Cl channel Olfactory bolb OB A Receives input from the olfactory nerve B The first relay station in the olfactory pathway C Odorant concentration coding in ORCs and OB D 1st relay station 1 each odor is represented by the activity of a large population of neurons 2 neurons responsive to particular odors may be organized into spatial maps 3 the timing of action potentials may be an essential code for particular odors E summary of olfactory pathways 1 frontal cortex conscious perception of smell 2 hypothalamus amygdala motivational and emotional aspects of smell 3 hippocampus odor memory Characteristics of olfaction A Most primitive sensory system B Olfactory sensory cells are true neurons C Only one relay station from the outside world to cortical tissue D Olfactory fatigue adaptation the temporary normal inability to distinguish a particular odor after a prolonged exposure to that airborne compound Main and accessory olfactory system MOS and AOS A Found in addition to the MOS in terrestrial vertebrates B Initiated in vomeronasal organ VNO and is mainly used in the detection of pheromones VI VII C Does AOS exist in humans 1 Vistible vestigial human VNO 2 Trpc2 is a pseudo gene in human 3 Absence of the VNA did not affect the detection of the putative human pheromone Pheromone A Chemical molecules released to elicit specific behavioral expressions or hormonal changes from other individuals of the same species B Important signals 1 Reproductive behavior 2 Territorial boundaries 3 Identification 4 Aggression C Role in



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