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PSYCH CH3
Term | Definition |
---|---|
Sensation | The stimulation of sensory receptors and the transmission of sensory information to the central nervous system |
Perception | An active process in which sensations are organized and interpreted to form an inner representation of the world |
Absolute Threshold | Refers to the weakest amount of a stimulus that a person can distinguish from no stimulus 50% of the time |
Subliminal Stimulation | Sensory stimulation that is below a person’s absolute threshold for conscious perception |
Difference Threshold | The minimum difference in magnitude of two stimuli required to tell them apart 50% of the time. |
Signal-Detection Theory | Assumes that the relationship between a physical stimulus and a sensory response is not just mechanical |
Sensory Adaptation | The sensory process of adjusting to the environment |
Rods | Black and white vision |
Cones | Color Vision |
Nearsighted | People who have to be usually close to a distant object to see its details |
Farsighted | People who see distant objects clearly, but have difficulty focusing on nearby objects |
Presbyopia | Lenses grow more brittle with age, making it more difficult to focus on objects |