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23 Cards in this Set
- Front
- Back
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Sensation
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Occurs anytime a stimulus activates one of your receptors
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Perception
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Organization of sensory information into meaningful experiences
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Psychophysics
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the branch of psychology that deals with the relationships between physical stimuli and mental phenomena.
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Absolute Threshold
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The weakest amount of a stimulus required to produce a sensation, the weakest amount of a stimulus that a person can detect half the time
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Difference Threshold
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the smallest change in a physical stimulus that can be detected half the time
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Weber's Law
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the principle that for an change (^'S) IN A STIMULUS TO BE DETECTED, A Constant proportion of that stimulus must be added or subtracted
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Signal-detection theory
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the study of people's tendencies to make correct judgments in detecting in the presence of stimuli
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Pupil
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the opening in the iris that regulates the amount of light entering the eye
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Lens
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a flexible, elastic, transparent structure in the eye that changes its shape to focus light in the retina
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Optic Nerve
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the nerve that carries impulses from the retina to the brain
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Binocular fusion
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the process of combining the images received from the two eyes into a single, fused image
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Retinal Disparity
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the differences between the images stimulating each eye
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Auditory Nerve
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the nerve that carries impulses from the inner ear to the brain, resulting in the perception of sound
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Vestibular System
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three semicircular canals that provide the sense of balance, located in the inner ear and connected to the brain by a nerve
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Olfactory Nerve
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the nerve that carries smell impulses from the nose to the brain
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Kinesthesis
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The sense of movement and body position
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Gestalt
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the experience that comes from organizing bits and pieces of information into meaningful wholes
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Subliminal messages
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brief auditory or visual messages that are presented below the absolute threshold
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Motion Parallax
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the apparent movement of stationary objects relative to one another that occurs when the observer changes position
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Constancy
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the tendency to perceive certain objects in the same way regardless of changing angle, distance, or lighting
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Illusions
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perceptions that misrepresent physical stimuli
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Extrasensory Perception (ESP)
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an ability to gain information by some means other than the ordinary senses
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Retina
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the innermost coating of the back of the eye, containing the light-sensitive receptor cells
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