Lecture_3_Sensation

Lecture_3_Sensation - Perceptual Developement Lecture 3...

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Perceptual Developement Lecture 3 September 19, 2011
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What is the perceptual world like in first four months of life? Newborn baby 2-month-old 4-month-old What do these babies taste, smell, hear and see?
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Taste Adult taste organized around 4 dimensions Bitter Sour Salty Sweet
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Smell Response to chemical composition of gases Adults can discriminate up to 10,000 different chemical substances!
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Smell and taste as gateways to memories “When from a long-distant past nothing subsists, after the people are dead, after the things are broken and scattered, taste and smell alone, more fragile but more enduring, more unsubstantial, more persistent, more faithful, remain poised a long time, like souls, remembering, waiting, hoping, amid the ruins of all the rest; and bear unflinchingly, in the tiny and almost impalpable drop of their essence, the vast structure of recollection.” -- Marcel Proust
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Facial reactions to sweet, sour and bitter tastes in 2-hour olds. Somebody put something in mouth. .. Annoying. .. Aaah…but it’s sweet. ..Nice… Taste in newborns
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Lemon juice! Sour! Tonic (quinine)! Bitter! I wonder why anybody likes this stuff. .. NO DISTINCT FACIAL EXPRESSION FOR SALTY TASTE
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Smell discrimination in 3- to 5-day- olds! Butyric acid “Stink Bomb” See: butyric acid Milk formula Vanilla From Schaal, Soussignan & Marlier (2002)
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Smell memory in newborns! Can 3- to 5-day old neonates discriminate mom’s Amniotic Fluid (AF) from unfamiliar AF? Like asking whether discriminate smell of your mom’s mac & cheese from vs.
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The Experiment Participants: Half neonates breastfed since birth; others bottle-fed . To test whether preference for familiar is learned during breastfeeding. Stimuli
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Lecture_3_Sensation - Perceptual Developement Lecture 3...

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