Glossary of Psych Ch. 6 section 1
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- detecting physical energy from the environment and encoding it as neural signals
- selecting, organizing, and interpreting our sensations
- conversion of one form of energy into another. In sensation, the transformation of stimulus energies into neural impulses
- Receptor cells
- a neuron that directly responds to a physical stimulus.
- Anatomical coding
- interpreting the location and type of stimulus according to which incoming nerve fibers are active
- Temporal Coding
- which system (eyes/ears) and which receptor cells in each system
- Weber fractions
- to be perceived as different, two stimuli must differ by a certain percentage and not a certain amount
- study of how physical energy relates to our physical senses
- Just-noticeable difference
- the minimum difference a person can detect between any two stimuli half the time
- a point at which a stimulus, or a change of intensity of a stimulus can just be detected
- Absolute threshold
- minimum stimulation required to detect a particular stimulus.
- Signal detection theory
- when we will detect weak signals, measured by our ration to miss and hits. When our bias comes in.
- ROC curve
- a graph of hits or false alarms of a patient. Indicates peoples ability to dtect certain stimulus
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