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Psychology Zino

Chapter Six OCC Zino

Sensation The detection of physical energy emitted or reflected by physical objects; occurs when energy in the external environment or the body stimulates receptors in the sense organs.
Perception The process by which the brain organizes and interperates sensory information.
Ambiguous Figure Figure that can be percieved two different ways. Both of which cannot be seen simultanously.
Sense Receptors Specialized cells that convert physical energy in the environment or the body to electrical energy that can be transmitted as nerve impulses to the brain.
Doctrine of Specific Nerve Engines Different sensory modalities exist because signals received by the sense organs stimulate different nerve pathways leading to different areas of the brain.
Synethsia A condition in which stimulation of one sense also evokes another.
Functional Sensory Codes Patterns of neuronal firing determine perception. (how many and at what rate)
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. Also known as Just Noticeable Difference (JND)
Signal-Detection Theory A psychophysical theory that divides the detection of a sensory signal into a sensory process and a decision process.
Adaptation The reduction or disappearance of sensory responsiveness when stimulation is unchanging or repetitious. It prevents us from having to continuously respond to unimportant information.
Deprivation The absence of normal levels of sensory stimulation.
Sensory Overload Overstimulation of the senses.
Selective Attention The focusing of attention on selected aspects of the environment and the blocking out of others.
Created by: j.r.vryhof