Perception and Sensation Vocabs

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Psychology

Sensation and Perception

Last updated 3:43 AM on 9/21/22
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10 Terms

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Difference Threshold
minimal change in stimulation that can be reliably detected 50% of the time
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Absolute threshold
point at which a stimulus can be detected 50% of the time
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Top-down Processes
identifying a stimulus by using the knowledge we already possess about the situation
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Bottom-Up Processes
identifying a stimulus by analyzing the information available in the external stimulus
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Sensation
sensing the existence of a stimulus
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perception
interpretation of information from the environment to identify the meaning
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transduction
the process of converting energy of a stimulus into neural activity
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sensory adaptation
decline in receptor activity when stimuli are unchanging
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habituation
a decline in response to a stimulus due to repeated presentation of the stimulus; this happens at the neural level
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signal-detection theory
theory which suggests how individuals are able to detect a minimal stimulus(signal) among other background stimuli(noise)