Sensation and perception open univ - Dr.V.Veera Balaji...

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Unformatted text preview: Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) SENSATION AND PERCEPTION Dr.V.Veera Balaji Kumar BHMS., M Sc., M PHIL. [Psychology] Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Sensation and Perception Chapter 3 Sensation and Perception Sensory Processes Five sense organs and their functions Perception and perceptual process Attention Span of attention Depth perception Perceptual processes Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Sensation vs. Perception Sensation The experience of sensory stimulation Perception The process of creating meaningful patterns from raw sensory information Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) The Nature of Sensation Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) The Basic Process Receptor cells Specialized cells that respond to a particular type of energy Doctrine of specific nerve energies One-to-one relationship between stimulation of a specific nerve and the resulting sensory experience For example, applying pressure with your finger to your eye results in a visual experience Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Sensory Thresholds Absolute threshold The minimum amount of energy that can be detected 50% of the time Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Absolute Thresholds Taste: 1 gram (.0356 ounce) of table salt in 500 liters (529 quarts) of water Smell: 1 drop of perfume diffused throughout a three-room apartment Touch: the wing of a bee falling on your cheek from a height of 1cm (.39 inch) Hearing: the tick of a watch from 6 meters (20 feet) in very quiet conditions Vision: a candle flame seen from 50km (30 miles) on a clear, dark night Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Sensory Thresholds Sensory adaptation An adjustment of the senses to the level of stimulation they are receiving Difference threshold The smallest change in stimulation that can be detected 50% of the time Also called the just noticeable difference Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Sensory Thresholds Webers Law States that the difference threshold is a constant proportion of the specific stimulus Senses vary in their sensitivity to changes in stimulation Dr.V.Veera Balaji Kumar BHMS., M Sc., M Phil (Psychology) Subliminal Perception The notion that we may respond to stimuli that are below our level of awareness Research shows that the effect only occurs in controlled laboratory studies Research outside the laboratory shows no significant effect of subliminal information Dr.V.Veera Balaji Kumar Dr....
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This note was uploaded on 09/26/2011 for the course PSYCHOLOGY 110 taught by Professor Kannan during the Spring '11 term at Anna University Chennai - Regional Office, Coimbatore.

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Sensation and perception open univ - Dr.V.Veera Balaji...

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