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| the process by which our sensory receptors and nervous system receive and represent stimulus energies from our environment. |
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| the process of organizing and interpreting sensory information, enabling is to recognize meaningful objects and events. |
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| Analysis that begins with the sensory receptors and works up to the brains integration of sensory information. |
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| information processing guided by higher-level mental processes as when we construct perceptions drawing on our experience and expectations. |
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| the study of relationships between the physical characteristics of stimuli as their intensity and our psychological experience of them. |
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| the minimum stimulation needed to detect a particular stimulus 50% of the time |
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| a theory predicting how and when we detect the presence of a faint stimulus amid background stimulation. Assumes there is no single absolute threshold and that detection depends partly on a persons experience, motivations, and level of fatigue. |
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| below ones absolute threshold for conscious awareness. |
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| the activation often unconsciously of certain associations thus predisposing ones perception, memory or response. |
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| the minimum difference between two stimuli required for detection 50% of the time. We experience the difference threshold as just a noticeable difference (jnd) |
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| the principle that to be perceived as different two stimuli must differ by a constant minimum percentage rather than a constant amount. |
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| diminished sensitivity as a consequence of constant stimulation |
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| conversion of one form of energy into another. In sensation the transforming of stimulus energies such as sights, sounds and smells into neural impulses our brains can interpret. |
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