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21 Cards in this Set
- Front
- Back
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What is Sensation and perception?
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Its the process have receiving Stimulus energies from the external environment, and interpreting it so that it has meaning.
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Bottom-up Prcoessing
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Taking in information from the external environment, and sending it to the brain to make sense of it.
Sensation-->Perception |
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Top-down processing
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The process that allows an organism tp make sense of what is happening and to apply that framework to information from the real world.
Perception-->Sensation |
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Sensory Receptors
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Special cells that detect stimulus and transmits it to sensory nerves and the brain.
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Stimuli
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Energy patterns that are registered by your senses.
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Absolute Threshold
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The minimum amount of stimulus energy that a person can detect only 50% of the time
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Difference Threshold
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The noticeable difference between two stimuli
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Webster's Law
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Two stimuli must differ by a constant minimum percentage to be perceived as different.
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Subliminal Perception
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The detection of the information below the level of conscious awareness.
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Signal Detection Theory
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A theory of perception that focuses on decision making about stimuli in the presence of uncertainty.
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Attention
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The process of focusing awareness on a narrow aspect of the environment
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Selective attention
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The process of focusing on a specific aspect of experience while ignoring others
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Perceptual Set
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A predisposition or readiness to perceive something in a particular way.
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Sensory Adaptation
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A change in the responsiveness of the sensory system based on the average level of surrounding stimulation.
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The Stroop Effect
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The expectation of something that you see all the time. Example-
Paris in the the spring. |
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The Cocktail Effect
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An example of selective attention. When your in a large crowd and only focusing on one thing. If you hear your name, then it will catch your attention.
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Photoreception
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Vision.
Detection of light |
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Mechanoreception
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Touch-
Detection of pressure, and movement Hearing- Detection of vibration |
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Chemoreception
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Smell and Taste
Detection of chemical stimuli |
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Rods
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A part of the eye that is sensitive to light, but not color and it functions well in low illumination
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Cones
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A part of the eye that sees color and responses well in well lit conditions.
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