Psych 101 Lecture 5

Psych 101 Lecture 5 - Sensation and Perception Sensation -...

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Sensation and Perception Sensation - The process by which our sensory receptors and nervous system receive and represent stimulus energy Perception - The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events Three principles emerge with regard to sensation and perception: 1. There is not a one-one correspondence between physical and psychological reality 2. Sensation and perception are adaptive 3. Sensation and perception are active processes Transduction –Detect physical energy (e.g. light, sound waves) –Translate physical stimulation into neural signals Threshold –Minimum amount of energy required to activate the system Adaptation –Sensory systems are sensitive to changes in stimulation level Sensory Adaptation Diminished sensitivity as a consequence of constant stimulation Selective Attention Focusing of conscious awareness on a particular stimulus • Beginning the transduction process: The Eye –Bleaching
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Psych 101 Lecture 5 - Sensation and Perception Sensation -...

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