PSY-0001 Chapter Notes - Chapter 5: Olfactory Nerve, Neural Adaptation, Cochlear Nerve
4 Oct 2016
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Document Summary
Sensation: detection of physical stimuli and transmission to brain. Bottom up processing: perception based on physical features of stimulus. Aspects build up into perception of that stimulus sensationperception. Top down processing: how knowledge, expectations, past experiences shape interpretation of sensory information. What we expect to see influences what we perceive expectation/contextperception. Sensory coding: physical stimuli patterns of neural impulses. Transduction: sensory stimuli translated to signals brain can interpret. Absolute threshold: minimum intensity of stimulation that must occur before you experience a sensation, 50% of the time. Difference threshold: minimum amount of change required for a person to detect a difference between two stimuli. Detecting a stimulus is subjective decision: sensitivity to the stimulus in presence of distractions from other stimuli, criteria used to make judgment from ambiguous information.
