day05 - chemosenses - 9/7/11 1 Psychology 2050 Perception 8...

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Unformatted text preview: 9/7/11 1 Psychology 2050 Perception 8 September 11 Day 05 Chemical Senses Lucretius - simulacra nose, tongue, & vomeronasal organ volatility, adsorbability, soluability issues about primaries (basic sensations) - sensory qualities coding - labeled line (Mller) cross-fber patterning 4 criteria 1. physical mixtures oF secondaries From primaries (Newton) 2. receptor-specifcity (Mller) 3. innate liking/disliking (WolFe/Bartoshuk) 4. psychological/cultural salience brain structures - rule oF opposition (decussation) avor Lucretius (99-55 BCE) De Rerum Natura (On the nature of things) objects exude likenesses of themselves (Epicurus --> simulacra), or copies This occurs in all modalities (not just vision) essentially correct (in a way) for chemosenses 1. Taste structures - papillae, buds, innervation pathway - chorda tympani thalamus insula, Frontal operculum (orbitoFrontal cortex) theories - chemical, valence, and shape coding & primaries salt, sweet, bitter, sour anomalies - ageusia, hypogeusia, & supertasters 9/7/11 2 the tongue life of a receptor ~ 10 days innervation of tongue; cranial nerves (12 in all) ; and taste pathway olfactory nerve (1st cranial nerve) --- smell optic nerve (2nd) vision trigeminal nerve (5th) touch, temperature, pain from front of tongue facial nerve (7th) --- taste, chorda tympani auditory/ vestibulocochlear (8th) audition & balance glossopharyngeal (9th) touch, temperature, pain from the back of tongue innervation of tongue; cranial nerves (12 in all) ; and taste pathway olfactory nerve (1st cranial nerve) --- smell optic nerve (2nd) vision trigeminal nerve (5th) touch, temperature, pain from front of tongue hot foods + facial nerve (7th) --- taste, chorda tympani auditory/ vestibulocochlear (8th) audition & balance glossopharyngeal (9th) touch, temperature, pain from the back of tongue right hemisphere left side of tongue decussation interactive brain anatomy URL: http://www.g2conline.org/? gclid=CP27iNfPi6sCFZCQ5god6H10vw and on course website thalamus theories - chemical, valence (electro-chemical), and shape coding - how are taste qualities coded ?...
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This note was uploaded on 09/18/2011 for the course PSYCH 2050 at Cornell University (Engineering School).

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day05 - chemosenses - 9/7/11 1 Psychology 2050 Perception 8...

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