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Definition
| The idea that incoming pain sensations must pass through a “gate“ in the spinal cord that can be closed, thus blocking pain signals. |
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Definition
| A theoretical orientation based on the idea that the whole is greater than the sum of its parts |
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| The sensory system for taste. |
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| Objects that can be represented in two-dimensional pictures but cannot exist in three- dimensional space. |
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Term
| Just noticeable difference (JND) |
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Definition
| The smallest difference in the amount of stimulation that a specific sense can detect. |
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Definition
| The sensory system that monitors the positions of the various parts of one's body. |
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Definition
| A process in the retina that occurs when neural activity in a cell opposes activity in surrounding cells. |
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Definition
| The transparent eye structure that focuses the light rays falling on the retina. |
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Definition
| The process whereby the eyes become less sensitive to light in high illumination. |
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Definition
| Clues about distance based on the image from either eye alone. |
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Definition
| Cue to depth that involves images of objects at different distances moving across the retina at different rates. |
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Definition
| A vision deficiency in which close objects are seen clearly but distant objects appear blurry. |
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Definition
| The sensory system for smell. |
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Definition
The theory that color perception depends on receptors that make antagonistic responses
to three pairs of colors. |
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Definition
| The point at which the optic nerves from the inside half of each eye cross over and then project to the opposite half of the brain. |
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Definition
| A hole in the retina where the optic nerve fibers exit the eye. |
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Definition
| An apparently inexplicable discrepancy between the appearance of a visual stimulus and its physical reality. |
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Term
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Definition
| Simultaneously extracting different kinds of information from the same input. |
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Term
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Definition
| The selection, organization, and interpretation of sensory input. |
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Definition
| A tendency to experience a stable perception in the face of continually changing sensory input. |
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Definition
| An inference about which distal stimuli could be responsible for the proximal stimuli sensed. |
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Definition
| A readiness to perceive a stimulus in a particular way. |
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Definition
| The illusion of movement created by presenting visual stimuli in rapid succession. |
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Definition
| Clues about distance that can be given in a flat picture. |
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Term
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Definition
| The idea that perception of pitch corresponds to the vibration of different portions, or places, along the basilar membrane. |
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Term
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Definition
| The fact that subjects' expectations can lead them to experience some change even though they receive an empty, fake, or ineffectual treatment. |
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Term
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Definition
| The stimulus energies that impinge directly on sensory receptors. |
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Definition
| The study of how physical stimuli are translated into psychological experience. |
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Definition
| The opening in the center of the iris that helps regulate the amount of light passing into the rear chamber of the eye. |
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