Psych 101 September 23

Psych 101 September 23 - tendons and joints and that...

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Psych 101 September 23, 2008 Sensation and Perception How do yes get info from outside and attach meaning to that info? o Information processing Sensation- process through which we process info from the outside world, using our sense organs Transduction- process by which receptor cells produce electrical change in response to physical stimulation pg228 Distal stimulus –real object (apple) Proximal stimulus-how we see distal Percept- attached meaning to the apple o Sensation- basic process by which sensory organs and the nervous system respond to stimuli in the environment and to the elementary experiences that result *necessary for perception but not sufficient o Special senses pg 227 Touch Smell – olfaction Taste -gustation Visual Hearing o Sensory receptors- structures that respond to physical stimuli by producing electrical charges that can initiate neural impulses o Sensory neurons- specialized neurons that carry info from sensory receptors into the CNS Kinesthesia- info that comes from receptors in the muscles
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Unformatted text preview: tendons and joints and that informs us about our movements and the orientation of our body in space Vestibular sense o Psychophysics- Study of relationship between physical characteristics of stimuli and the sensory experiences produced by those stimuli o Detection and decision Goal of psychophysics is to chart relationship between physical characteristics of stimuli of individuals perception of stimulus o Signal detection paradigm Basic approach is to present targets on some trials but not others o Measuring sensory intensity Absolute threshold- minimum energy necessary to detect a stimulus or faintest detectable stimulus Below threshold or near threshold input o Chemical senses Olfaction-smell-cells located in bulb, nerves to parts of brain to process info • Smell as a component of flavor • Age and sex related differences • Role in attachment (infant/mother) Gustation hearing...
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Psych 101 September 23 - tendons and joints and that...

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