Chapter-3-Sensation_Perception

Chapter-3-Sensation_Perception - Sensation : the conversion...

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Unformatted text preview: Sensation : the conversion of a stimulus (e.g. wave of light) into neural impulses at a receptors site (e.g. eyes). Perception : interpreting those stimuli, applying meaning to them. Sensation = stimulation of a sensory organ/ sensory receptors, transduction and transmission of information  Perception = interpretation of information received by the brain from sensory receptors  Sensory receptor = specialized neuron that detects a particular category of physical energy The task of all perception is to determine the real object in the environment ( distal stimulus ) from the stimulation of a sensory receptor in the body ( proximal stimulus ) Distal Stimulus A physical object in the world Proximal Stimulus The optical image on the retina Mental Processes Mental Processes Identification/Recognition Identification/Recognition Perceptual Organization Perceptual Organization Sensation Sensation Environmental stimulation Environmental stimulation Top-down processes (conceptually driven) Bottom-up Processing (data-driven) Retinal image (only sensory fragments and angles and lines) Figure seen as rectangle turned away from you when the brain interprets sensory information it makes many assumptions perception is always an opinion Ambiguity defined Situation or utterance that may have more than one interpretation Illusion defined Experience of a stimulus pattern in a manner that is demonstrably incorrect but shared by others in the same perceptual environment brightness contrast Ames room moon illusion...
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Chapter-3-Sensation_Perception - Sensation : the conversion...

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