Sensation and Perception Part 1

3. below one's absolute threshold for conscious awareness
4. the minimum difference between two stimuli required for detection 50 percent of the time.
5. often unconsciously, of certain associations, thus predisposing one's perception, memory, or response
7. the distance from the peak of one light or sound wave to the peak of the next. Electromagnetic wavelengths vary from the short blips of cosmic rays to the long pulses of radio transmission
9. analysis that begins with the sensory receptors and works up to the brain's integration of sensory information
10. the minimum stimulation needed to detect a particular stimulus 50 percent of the time
14. conversion of one form of energy into another

1. information processing guided by higher-level mental processes, as when we construct perceptions drawing on our experience and expectations
2. a mental predisposition to perceive one thing and not another
3. a theory predicting how and when we detect the presence of a faint stimulus amid background stimulation
6. diminished sensitivity as a consequence of constant stimulation
8. the study of relationships between the physical characteristics of stimuli, such as their intensity, and our psychological experience of them
11. the process of organizing and interpreting sensory information, enabling us to recognize meaningful events and objects
12. the principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount)
13. the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment