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Sensation:
Stimuli
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Sensory receptors
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Psychology define
Psychology homework definations
| Term | Definition |
|---|---|
| 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. |
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michaela.smith
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