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Psychology define

Psychology homework definations

Sensation: Stimuli a thing or event that evokes a specific functional reaction in an organ or tissue.
Sensory receptors are specialised neurons or nerve endings that respond to changes in the environment by converting energy from a specific stimulus into an action potential
Reception the action or process of receiving something sent, given, or inflicted.
Receptive field an individual sensory neuron is the particular region of the sensory space
Transduction the action or process of converting something and especially energy or a message into another form
Transmission the action or process of transmitting something or the state of being transmitted.
Perception: Interpretation is the process through which we represent and understand stimuli.
Visual sensory system: Cornea the transparent layer forming the front of the eye.
Pupil The pupil determines how much light is let into the eye.
Iris flat, coloured, ring-shaped membrane behind the cornea of the eye, with an adjustable circular opening (pupil) in the centre.
Lens By changing its shape, the lens changes the focal distance of the eye.
Ciliary muscle the part of the eye that connects the iris to the choroid.
Retina a layer at the back of the eyeball that contains cells sensitive to light
Photoreceptors a structure in a living organism, especially a sensory cell or sense organ, that responds to light falling on it.
Rods the rods are the retinal photoreceptors that provide side vision and the ability to see objects in dim light (night vision).
Cones A type of specialized light-sensitive cell (photoreceptor) in the retina of the eye that provides color vision and sharp central vision.
Fovea/macula In the eye, a tiny pit located in the macula of the retina that provides the clearest vision of all.
Optic nerve The optic nerve carries the impulses formed by the retina, the nerve layer that lines the back of the eye and senses light and creates impulses.
Blind Spot A small region in the visual field (the area scanned by the eye) that cannot be seen.
Primary visual cortex Receives the visual data
Gestalt principles: Closure Closure is the effect of suggesting a visual connection or continuity between sets of elements which do not actually touch each other in a composition.
Camouflage Camouflage is the deliberate alteration of figure-ground so that the figure blends into the ground.
Figure ground This principle shows our perceptual tendency to separate whole figures from their backgrounds based on one or more of a number of possible variables, such as contrast, colour, size, etc.
Similarity Gestalt theory states that things which share visual characteristics such as shape, size, colour, texture, or value will be seen as belonging together in the viewer’s mind.
Proximity Proximity occurs when elements are placed close together. They tend to be perceived as a group.
Created by: michaela.smith
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