James_Lecture_10_Sensation___student_version

James_Lecture_10_Sensation___student_version - Sensation...

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Unformatted text preview: Sensation PSY 2012 2.14.08 Definitions _________ : The process by which we detect and encode information received about the environment through our senses _________ involves the organization of this information (more on perception next week)- Sensation and perception are one continuous process Sensation Basic Principles The Five Senses Vision Hearing Touch Taste Smell Overview Basic principles We have varying sensitivities to stimuli ___________ minimum stimulation necessary to detect a stimulus 50% of the time Can we sense stimuli below threshold? Signal Detection Theory Predicts how and when we detect weak signals amid background noise Described in Hits and False alarms Absolute thresholds can vary experience expectations motivation level of fatigue http://psych.hanover.edu/Krantz/STD/examples.html Difference Thresholds Minimum difference a person can detect between two stimuli 50% of the time Just noticeable difference (JND) Increases with the magnitude of the stimulus Example: Sugar and Kool-aid Sensory Adaptation Diminishing sensitivity to an unchanging stimulus Allows us to focus on informative changes Sensation ____________- process by which our sensory systems convert stimulus energy into neural messages The eye PUPIL PUPIL-adjustable opening in the center of the eye through which light enters...
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This note was uploaded on 02/27/2011 for the course PSY 2012 taught by Professor Waesche during the Fall '08 term at FSU.

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James_Lecture_10_Sensation___student_version - Sensation...

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