EXAM 1 SG

EXAM 1 SG - SENSE STRUCTURE STIMULUS RECEPTORS Vision Eye...

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Unformatted text preview: SENSE STRUCTURE STIMULUS RECEPTORS Vision Eye Light Waves Rods/Cones Hearing Ear Sound Waves Hair Cells Touch Skin Pressure Mechanoreceptors Smell Nose Chemicals Hair Cells Taste Mouth Chemicals Taste Buds nclature, and which processes they acct for. Know the specific sensory nerves and what they do Note there are 3 options for the excess NTs! e in some way so needs to be corrected (because it has 2/3 of focusing power) • Sensation o Initial detection of energy from the environment • Perception o Higher order cognitive processes o Product of psychological processes • Transduction o Process of changing physical energy into chemical energy to be detected • Influential factors on perception o Sensory signals o Past experience shapes memories & opinions o Previous hypotheses o Prejudices (we know dropping something will cause it to fall to the group, not go into the air) o ***Innate abilities + experience like nature/nurture • Bottom up processing o Dog picture: see dots, put them together and see a dog o Add up the small pieces to make big picture • Gestalt principles (5 in all) o Closure – triangle/pacman picture CH. 1 • Sensation and perception are the products of evolution o Human senses evolved to help survival (increase) o Importance of type of energy in the environment determines which senses have developed • Lamarck (giraffe guy) o Inheritance of acquired characteristics • Darwin & Wallace o Individuals vary o Environment will affect survival and reproduction o Some traits are heritable o Changes arise via natural selection of variants in the population Traits need to be heritable for this to work Ex: white fur • Important/beneficial if in the Arctic, not so much in the jungle/forest • Some animals are able to sense stimuli that humans cannot o Bees Can see in UV spectrum (important for seeing pollen) o Rattlesnakes Infrared helps detect heat up to 30ft away to help hunt/avoid predators o Dogs Can hear 45,000 Hz (we can hear about ½ of that) o ** There are physical stimuli outside our awareness! Our reality is limited** • Definitions o Adaptation : Reduction in response caused by prior/continuing stimulation o Sensory Transducer : receptor that converts physical energy from the environment to neural activity o Nativism : Idea that the mind produces ideas that aren’t derived from external sources (Plato) Plato talked about world of knowledge and world of opinion • Opinion came through senses • Knowledge is innate o Monism : idea that the mind and matter are formed from, or reducible to, a single ultimate substance or principle of being Materialism : the idea that physical matter is the only reality and everything can be explained in terms of matter and physical phenomena Mentalism : Everything can be explained by the mind and objects exist only as aspects of the mind’s awareness o Mind-body Dualism : The existence of 2 distinct principles of being in the universe – spirit/soul and matter/body...
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This test prep was uploaded on 04/14/2008 for the course PSC 129 taught by Professor D.hunt during the Winter '08 term at UC Davis.

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EXAM 1 SG - SENSE STRUCTURE STIMULUS RECEPTORS Vision Eye...

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