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PSY1101-CH.6 NOTES copy.doc

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Department
Psychology
Course
PSY1101
Professor
A L L
Semester
Fall

Description
PSY1101Chapter 6Sensation and PerceptionSensation vs PerceptionTo represent the world we must detect physical energy a stimulus from the environment and convert it into neural signals Automatic This is a process called sensationProsopagnosia Face Blindness rare neurological disorder When we select organize and interpret our sensations the process is called perception Related to past present and future expectationsBottomup Topdown processingBottomup Analysis of the stimulus begins with the sense receptors and works up to the level of the brain and mind SensationTopDown Information processing guided by higherlevel mental processes as we construct perceptions drawing on our experience and expectations PerceptionMaking Sense of ComplexityOur sensory and perceptual processes work together to help us sort out complex imagesBottomup processing enables our sensory systems to detect the lines angles and colors that form the horses rider and surrounding Topdown processing enables us to perceive the faces in the forestSensing the WorldA frog feeds on flying insects a male silkworm moth is sensitive to female sexattractant odor as we as human beings are sensitive to sound frequencies that represent the range of human voice
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