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Midterm 2 It's from the new psychology textbook!

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York University
PSYC 1010
Rebecca Jubis

Chapter 6 Sensationthe process of the sensory receptors and nervous system receive and represent stimulus energies Perceptionorganizing and interpreting sensory information enabling us to recognize meaningful objects and events Bottomup Processinganalysis that begins with the sensory receptors and works up to the brains integration of sensory information Topdown Processinginformation processing guided by highlevel mental processes as when we construct perceptions drawing on our experience and expectations Psychophysicsthe study of relationships between the physical characteristics of stimuli such as their intensity and our psychological experience of them Absolute Thresholdthe minimum stimulation needed to detect a particular stimulus Signal Detection Theorytheory predicting how and when we detect the presence of a faint stimulus signal amid background stimulation noiseSubliminalbelow ones absolute threshold for conscious awareness Primingthe activation often unconsciously of certain associations thus predisposing ones perception memory or response Difference Thresholdthe minimum difference between two stimuli required for detection 50 of the timeWebers Lawthe principle that to be perceived as different two stimuli must differ by a constant minimum percentage Sensory Adaptationdiminished sensitivity to constant or routine odours sounds and touches focuses our attention on informative changes in our environmentTransductionTransformsconversion of one form of energy into another Wavelengthdistance between the peaks of light or sound waves Huecolour Intensityamount of energy in light or sound wavePupilthe opening in the centre of the eyes where light enters Irisring of muscle tissue that controls the size of the pupil opening
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