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Bipsychology - 4/29

by: Sierra Wollen

Bipsychology - 4/29

Sierra Wollen


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About this Document

Notes from 4/29. Olfaction.
Psychology, biopsych, biopsychology
10 ?




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This 1 page Reader was uploaded by Sierra Wollen on Monday May 5, 2014. The Reader belongs to a course at University of Washington taught by a professor in Fall. Since its upload, it has received 71 views.


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Date Created: 05/05/14
Psych 202 429 Olfaction Outline Olfact1on mechanisms Learning across generations Pheremones Mechanisms Olfactory bulbs and extensions into nasal cavity Sense of smell Worse compared to other species Olfactory receptor cells sensory cells neurons Olfactory neurons grow back and get replaced o Only neurons that regenerate except hippocampus Can distinguish 5k10k different smells maybe more 40 million receptor neurons 350 receptor types Take chemicals from environment 9 olfactory ephilium receptor cells Combinations of receptor type activation creates smells Molecules get stuck to mucus and fire signals to brain Smell goes directly through amygdala and other structures SKIPS the thalamus no sensory relay Anosmia inability to smell generalized or specialized Leaming across generations Epigenetic inheritance get genetics and leamed DNA info from parents o Study fear conditioned mice with odorshock pair o Mated mice and tested mice behavior I Startle mice for control then startle mice along with odor o Child fear odor that parents were conditioned to fear I Grandchildren fear odor as Well o More olfactory receptors in children for specific smell that was conditioned in parents Pheremones VNO Vomeronasal organ Receptor cells that go from organ to accessory olfactory bulb Detects pheromones chemicals secreted by animals that in uence social responses of others o Behaviorreproduction o VNO may be non functional in humans but can smell pheromones with olfactory system Q Role of pheromones very small in humans


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