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absolute threshold
the smallest quantity of physical energy that can be reliably detected by an observer.
Difference Threshold
the smallest difference in stimulation that can be reliably detected by an observer when two stimuli are compared (noticeable difference).
Signal Detection Theory
a psychological theory divides the detection of sensory signal into a sensory process and a decision process, factoring in the observer's expectations and experiences.
sensory adaptation
the reduction or disappearance of sensory response to a constant stimulus over time.
sensory deprivation
the absence of normal levels of sensory stimulation
selective attention
the process of focusing on selected aspects of the environment while blocking out others.
Inattentional blindness
failure to consciously perceive something you are looking at because you are not attending to it.
