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10 Cards in this Set

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  • Back
The process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment
The process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events
Bottom-up processing
Analysis that begins with the sense receptors and works up to the brain’s integration of sensory information
Top-down processing
Information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations
The study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them
Absolute threshold
The minimum stimulation needed to detect a particular stimulus 50 percent of the time
Signal Detection Theory
Predicts how and when we detect the presence of a faint stimuli (“signal”) amid background stimulation (“noise”). Assumes that there is no single absolute threshold and that detection depends partly on a person’s experience, expectations, motivations, and level of fatigue
Subliminal Stimulation
Below one’s absolute threshold for conscious awareness
Difference threshold
The minimum difference that a person can detect between two stimuli. We experience the difference threshold as a just noticeable difference
Weber’s Law
The principle, that, to perceive their difference, two stimuli must differ by a constant minimum percentage (rather than a constant amount)