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Lecture 14

PSYC 2000 Lecture 14: Exam 2 Review

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Louisiana State University
PSYC 2000
Katherine Moen

 Perception: standing in the classroom and see students  Sensations: light waves bouncing  Thresholds: Absolute and _____  Habituation vs sensory adaptation o Habituation: ignore o Sensory: senses stop responding o Why are the eyes special?  Microscaccdes: eyes always moving  Various parts of the eye: only thing we didn’t talk about is blood vessel o No labeling o The parts of the eye, what they do, and roughly where they are located o Retina: different cells  Photoreceptor’s x2  Bipolar  Ganglion cells: axons form the optic nerve o When are rods and cones more active?  Star-gazing: rods  Color vision o Theories x2  Afterimages: what theory  Trichromatic theory = young/Helmholtz theory o Color blindness  Problems that can be corrected with glasses Other vision problems  Lens gets too stiff and can’t accommodate  Hearing o Hearing o Bones in middle ear o How vibrations get from air to eardrum to interpreting sound  Theories of pitch perception o Place o Frequency  Why smell and taste special? The two chemical senses  Why do you think of your grandma when you smell cookies? o Because olfactory bulb pathway goes through your amygdala  Extra sense o Somesthetic sense  Know (generally what each does  Illusions o What they are called and why  Herman: different cones that code for edges, corners, etc. they happen at the same time  Muller ryer: right angles  Rotating snakes: micro saccades  Three process of perception o Selection o Organization o Interpretation  Top-down: memory guide: dark apartment; bed  bathroom  Bottom-up: no previous memories at all; perception guides you  Consciousness o Waking o Altered-states  Know the different states  Measuring attention o Dichotic listening task  Know how it happens  Sleep o Know what circadian rhythms are o And how melatonin is released  Theories of sleep o Why we need sleep: restorative o Why we sleep when we sleep: adaptive o Know the differences between the two  Stages of sleep o Know the different stages of sleep and awake and what wave form
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