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PGS 101, Lec 4 (Sensation & Perception)

PGS 101, Lec 4 (Sensation & Perception) - • Outer...

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Sensation & Perception
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Sensation = Perception Sensation Perception Sensory Adaptation
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Distal stimuli Proximal stimuli Perceptual hypotheses
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Vision The stimulus Amplitude Wavelength Purity The receptors
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Page 126 Figure 4.7
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Lens Pupil Retina Fovea
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Dark adaptation Light adaptation Optic chiasm
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Feature Detectors Simple cells Complex cells Hypercomplex cells
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Theories of Color Vision Trichromatic Opponent process theory
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Form Perception Theories Feature analysis
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Form Analysis Theories Feature analysis Gestalt theory
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Gestalt Principles Figure/Ground Proximity Similarity Continuity Closure Common Region Connectedness
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Depth Perception Binocular cues Retinal disparity Convergence Monocular cues Linear Perspective Relative Size Interposition Texture Gradient Height in Plane Shadowing
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Perceptual Consistency Color Size Shape
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Auditory System The stimulus Amplitude Wavelength Purity Human hearing capacity
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Page 162 (study) Figure 4.46
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Unformatted text preview: • Outer ear – Pinna (sound collecting cone) – Ear Canal • Middle ear – Ossicles: hammer, anvil, stirrup • Inner ear – Cochlea – Basilar membrane (celia) Theories of Pitch Perception • Place theory – Theory that we perceive pitch by where they occur on membrane • Frequency theory – Rate at which it is vibrating • And the winner? – Entire membrane vibrates but peak determines peak Gustatory System • The stimuli – Soluble chemicals • Receptors – Taste bud/papillae • Detect four primary tastes – Sweet, sour, bitter, salty Olfactory System (smell) • The stimulus: soluble • Receptors: olfactory celia The Tactile System • The stimuli: thermal, chemical, or mechanical energy • Receptors: nerve cells • Four basic skin senses – Temperature, pain, pleasure, touch Kinesthetic System (Do you know where your limbs are tonight?) Vestibular System...
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