OLFACTION (SMELL)Psychology 3041/6014 Spring, 2019OLFACTION (SMELL)1) Functions and Facts2) Odor Quality3) Anatomy and Physiologya) Olfactory Epitheliumi) Located on top surface (roof) of the nasal cavityii) Cribriform plateiii) Mucosa contains olfactory receptor cells1 of 7Psychology 3041/6014 Spring, 2019iv) Olfactory bulb2 of 7Psychology 3041/6014 Spring, 2019b) Receptorsi) Olfactory cells with cilia spread through mucosaii) Chemicals in the air absorbed into mucosaiii) Receptor sites on the ciliac) Organization of receptor cells in the mucosai) 4 zones in mucosaii) Axons from one zone all go to same area of olfactory bulbd) Olfactory bulbi) Brain projectionii) Composed of glomeruliiii) Inputs to a given glomerulus come from…iv) About 1000-2000glomeruli3 of 7Psychology 3041/6014 Spring, 2019e) Pathwayi) Olfactory bulbii) Primary olfactory cortex (piriform)iii) Secondary olfactory cortex (orbitofrontal)iv) Amygdala – deep in cortex4) Neural codinga) Intensityb) Quality4 of 7Psychology 3041/6014 Spring, 20195) Thresholdsa) Detectionb) Genderc) Aged) Adaptation6) Odor and memorya) Can serve as a very potent and long-lasting memory cueb) Episodic odor5 of 7Psychology 3041/6014 Spring, 20197) Pheromonesa) Releaser pheromonesb) Primer pheromonesc) Marker pheromonesd) Alarm pheromones8) Common chemical sensea) Free nerve endings in the mucosal membranes (nose, mouth, eyes, respiratory tract)6 of 7Psychology 3041/6014 Spring, 20199) Flavora) Combination of both smell and tasteb) Phenomena:c) Physiology7 of
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