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19 Cards in this Set
- Front
- Back
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Synethesia
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perceptual experience of one sensation is evoked by another sense
ie sould associated with color |
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Sensation
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simple awareness due to the simulationof a sense organ
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Perception
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organization, classification, and interpretation of a sensation to form a mental represeantation
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Transduction
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conversion of physical signals into environmental neural signals sent to the Central Nervous System
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Pyschophysics
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Methods to measure the strength of stimulus and sensitivy to that stimulus
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Active vs Passive Perception
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Acive - perception result or actively organizing sensory data
Passive - Blank Slate that aborves distal and proximal stimuli |
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Gustav Fechner
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Absolute threshhold/ just noticible difference
Law s = kLOG i s - subjective magnitude i = intensity of stimuli |
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Just Noticible Difference jnf=d
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smallest change in stimuli that an observer can detect
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Absolute Threshold
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Minimal amount of stimulus needed for detection
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Weber Law/Fraction
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size of jnd is a constant fraction of the stimulus we are comparing
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Sensitiviy Vs Decision Criteria
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Must account for a persons dicision criteria to reponse of stimulus
Know the box P NP ----- ---|---------|------------- y hit falseAlarm n miss true (-) |
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Sensory Adaptation
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Perceptual Systems emphasize change when detecting the evnviroment
Constant Stimulation Leads to Adaptation |
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Mechanical Sense
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Vision, Hearing,
Touch -pressure -pain -cold/warmth |
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Chemical Sense
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Taste
Smell |
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Kinestheisi
Vestibular Sense -balnace |
OTHER SENSES
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How are senses coded?
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Start with chemical or mechanical information
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Sensory Coding
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Codes information in neural impulse
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Psychological Intensity:
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neurons fire more or less often, number of neurons
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Sensory Quality
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different nerves stimulated fo visual versus iput olfactory
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