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19 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Sensation |
The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment |
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Perception |
The process of organizing and interpreting sensory info, enabling us to recognize meaningful objects and events |
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Bottom up |
Sensory receptors to personal perception |
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Top-down |
Perception to sensory inputs |
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Selective attention |
The focusing of conscious awareness on a particular stimulus |
11,000,000 bits, consciously process 40 |
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Cocktail party effect |
Ability to attend to one voice among many |
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Inattentional blindness |
Failing to see visible objects when our attention is directed elsewhere |
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Change blindness |
Failing to see a change in the environment, a form of inattentional blindness |
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Pop out |
Attention given to something noticeable |
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Transduction |
Sensory input turned into neural impulses that brain can interpret |
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Three steps for sensory systems |
1. Receive 2. Transform 3. Deliver |
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Psychophysics |
The study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them |
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Absolute threshold |
The minimum stimulation needed to detect a particular stimulus 50% of the time |
Gustav Fechner |
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Signal detection theory |
A theory predicting how and when we detect the presence of a faint stimulus (signal) amongst noise. It assumes that there is no signal absolute threshold, depends partly on a persons experience, expectations, motivation and alertness |
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Subliminal |
Below the absolute threshold, cannot be detected 50% of the time |
Can briefly prime you |
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Priming |
Unconscious activation of a certain memory or response |
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Difference threshold |
The minimum change we detect 50% of the time |
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Webers law |
To be perceived as different, two stimuli must differ by minimum constant percentage |
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Sensory adaptation |
Diminished sensitivity as a consequence of constant stimulation |
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