Sensation PPT

Sensation PPT - Sensation Psychology 101 David L. Penn,...

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Unformatted text preview: Sensation Psychology 101 David L. Penn, Ph.D. Sensation - Definitions and Relevant Terms Definition: The ability to detect and encode information from the environment. Perception: The ability to use, organize, and understand environmental sensations; the ability to give meaning to what we sense. Transduction Sensation versus Perception Sensation: Bottom-up processing Perception: -Top-down processing Figure 4.18, page 104 Figure 4.18 Bottom-up versus top-down processing. Thresholds Absolute Threshold Alternative: Signal Detection Theory Sensitivity and bias Hits, Misses, False Alarms, and Correct Rejections Difference Threshold Webers law: JND=k (constant fraction) X I Vision Visible radiation wavelengths are measured in nanometers Sensations of light depend on two physical dimensions of light waves: Wave Amplitude (light intensity: Brightness) Wave Length (color) Figure 4.1, page 92 Light outside visible spectrum...
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Sensation PPT - Sensation Psychology 101 David L. Penn,...

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