PSCY NOTES TEST 2

PSCY NOTES TEST 2 - Class 1-Sensation & Perception...

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Unformatted text preview: Class 1-Sensation & Perception 21:49 Sensation Our sense organs detection of and responses to external stimulus energy (light, air, vibrations, odors, and so on) At the neurophysiological level Process by which physical/chemical energy is converted into neural signals Touching arm is communicated to brain Feeling that something is touching you Perception How you conscew the information and interpret the information Brains further processing of these detected signals that results in internal representation of the stimuli 6 th sense Proprioception Knowing that you are sitting down because body is sending signals Sensation to Perception Light waves are received by sensory receptors in eyes Transduction A process by which sensory receptors produce neural impulse when they receive physical or chemical stimulation Mind/brain interpret and compared with information previously in brain Names and meanings are assessed Stimuli recognized and interpreted Sensation Sense of taste Food mixed with saliva and mixed with taste buds These buds look like an orange, orange has wedges, these receptor cells are like wedges of buds, chemicals touch, activate receptors when receptors activated, they communicate with nerves Nerves fire: action potential Taste buds triggered by different flavors Umami-Not just salty, another flavor if making chicken with bones Supertasters 5 times buds then normal people Will have health problems because the bitter taste you get from broccoli and sprouts, they will get it strong and will not eat them very often Taste shift with age Kids prefer fatty foods Gustation- our sense of taste Keep posins out of our digestive system while allowing good food in Taste Buds Sensory receptors that transduce taste information Sense of smell Chemicals in air go up the nose and are received by receptor cells, behind your sinuses. They communicate with olfactory bulb and straight shot to brain Don’t know how we differentiate from different smells Might be smells that are tailored to each of the smells out there Smell or olfaction has he most direct route to the brain, but it may be the least understood Olfactory epithelium- the thin layer of tissue within the nasal cavity that is embedded with smell receptors Olfactory bulb- the brain center for smell, located below the frontal lobes Sense of touch When something touches you, or something cold. Receptor cells go up arm, to thalamus, to somatosensory cortex....
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This note was uploaded on 04/07/2012 for the course PSCY 107 taught by Professor Kim during the Spring '12 term at Texas A&M.

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PSCY NOTES TEST 2 - Class 1-Sensation & Perception...

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