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Cards In This Set
| Front | Back |
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What is sensation?
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Process of receiving stimulus energies from the environment
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What can stimulis consist of?
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Physical Energy light, sound, and heat
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What is transduction?
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The process of transforming physical energy into electrochemical energy
Nervous System -----> Brain
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What is perception?
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The brains process of organizing and interpreting sensory information to give it meaning
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What is bottom-up processing?
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Processing that begins with sensory receptors registering environmental information and sending it to the brain for analysis and interpretation
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What is top-down processing?
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Processing of perceptual information that starts out with cognitive processing at the higher levels of the brain
(knowledge, beliefs, and expectations)
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What are sensory receptors
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Specialiszed cells that detect stimulus information and transmit it to sensory (affement) nerves and the brain
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Sense Organs and Sensory Receptors classes
What is photoreception?
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Detection of light, preceived as sight
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Sense Organs and Sensory Receptors classes
What is mechanoreception?
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Detection of pressure, vibration, and movement that is perceived as touch, hearing, and equilibrium
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Sense Organs and Sensory Receptors classes
What is chemoreception?
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Detection of chemical stimuli, perceived as smell and taste
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What is psychophysics? |
The field that studies links between the physical procperties of stimuli and a persons experience of them
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What is absolute threshold
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Minimum amount of the stimulus energy that a person can detect
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What is noise?
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Irrelevant and copeting stimuli
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What is subliminal Perception?
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The detection of information bnelow the level of concious awareness
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What is difference threshold?
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The smallest differencce in stimulatioon required to discriminate one stimulus from another 50% of the time, also called "just noticeable difference"
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