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Psych Final Ch 6

Ch 6

Sensation detection and collection of information about physical energies and substances; when substances or physical energies in the environment or the body stimulate sense receptors
Perception organization and interpretation of sensory information
Sense receptors specialized cells that convert substances and physical energies into electrical energy that can be transmitted to the brain
Anatomical coding different sensory modalities exist because sensory receptors from different sense organs stimulate nerves leading to different brains areas
Doctrine of specific nerve energies Currently undefined
Functional coding further refined coding of sensory information within one sensory modality; which cells are firing, how many cells are firing, the rate at which cells are firing, and the pattern of each cell’s firing
Synesthesia sensory crossover occurs when activation of one sense pathway involuntarily causes another to be activated as well
Psychophysics a field concerned with measuring the relationship between physical stimuli and corresponding sensations and perceptions
Sensory adaptation reduction in sensory responsiveness when stimule is unchanging or repetitous
Sensory deprivation absence of normal levels of sensory stimuli
Sensory overload over-stimulation of the senses (without adaptation); can lead to fatigue and mental confusion
Perceptual adaptation adapting to distractions in your environment
Selective attention our ability to focus on selected stimule while ignoring others; usually a good thing
Inattentional blindness the failure to perceive objects that we are looking at
Priming a method used to encourage unconscious processing of information, where the impact of that information on later behavior or performance on another task or in another situation is then assessed
Hue our experience of the wavelength of light
Bightness our experience of the complexity of light
Saturation our experience of the amount of light
Optic nerve transmits signals from the retina to the brain
Retina neural tissues lining the back of the eye; contains photoreceptors
Rods photoreceptors that respond to dim light
Cones photoreceptors necessary for color vision
Ganglion Cells respond to synaptic input by creating action potentials which are then sent to the brain via the optic nerve
Dark Adaptation a process by which photoreceptors become maximally sensitive to dim light
Gestalt principles describe the brain’s organization of sensory building blocks into meaningful units and patterns
Figure-ground segmentation the figure stands out from the rest of the environment
Proximity grouping of closer items together, how close together things are
Closure filling in the gaps to complete forms; is the sound continuous or intermittent
Similarity group of similar items together; are there similar or dissimilar sounds
Continuity seeing lines as being continuous
Gate-control theory the theory that the experience of pain depends in part on whether pain impulses get past a neurological “gate” in the spinal cord and thus reach the brain
Kinesthesis the sense of body position and movement of body parts; also called kinesthsia
Equilibrium the sense of balance
Created by: lygordon
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