Flashcards
Sensation and Perception
Cards in this deck (22)
- 1SensationThe process by which our sense organs and recepetors detect and respond to sensory information that stimulates them.
- 2PerceptionThe process by which we give meaning to sensory information (interpreting sensations)
- 3ReceptionProcess of detecting and responding to incoming sensory information (rods and cones)
- 4TransductionProcess where receptors change the energy of the detected sensory information into a form which can travel along neural pathways to the brain, known as 'action potentials' or 'neural impulses'
- 5TransmissionProcess of sending the sensory information to relevant areas of the brain via the thalamus
- 6InterpretationProcess where incoming sensory information is given meaning so that it can be understood (ties in with perception), involving using past experiences as well as current emotions.
- 7What form of energy does light enter the eye as?Electromagnetic Energy
- 8What do you call the energy that has been converted into something that can travel along the neural pathways to the brain?Electrochemical Energy
- 9CorneaTransparent, convex shaped covering; protects the front of the eye and helps to focus light onto the retina- bend light waves as they enter the eye.
- 10Aqueous HumourWatery fluid found between the cornea and the pupil; helps to maintain the shape of the eyeball, provide nutrients/oxygen to the eye, as well as carries away waste products.
- 11PupilOpening in the middle of the iris (not a structure); helps control the amount of light entering the eye.
- 12IrisRing of muscles surrounding the pupil that controls the amount of light entering the eye by contracting and expanding (regulates size of pupil).
- 13LensA transparent, flexible, convex structure located directly behind the pupil that focuses light onto the retina; it adjusts its shape according to the distance of the object being viewed.
- 14RetinaReceives and absorbs light and also processes images. Images focused onto the retina are inverted and reversed.
- 15Optic NerveTransmits the visual information from the retina to the primary visual cortex.
- 16FoveaA tiny pit located in the retina that provides the clearest vision of all. Inside it the layers of the retina are spread aside to let light fall directly onto the cones (the cells that give the sharpest image)
- 17Vitreous HumourA jelly-like substance which helps to maintain the shape of the eyeball and also helps focus light.
- 18StimulusLight reflected from a visual image enters the eye and is focused by the lens and cornea onto the retina.
- 19RodsCells that respond to very low levels of light; primarily responsible for night vision. They are poor at detecting fine details in images, allow us to see black and white.
- 20ConesCells that respond to high levels of light and are primarily responsible for our vision in well light areas. Detect fine details and allow us to see colour.
- 21Ganglion cellsGenerate action potentials which enable transmission of the information to the brain.
- 22PhotoreceptorsDetect light waves and convert them into electrochemical energy; known as rods and cones.
Information
- Description
- Flashcards about perception and sensation, and different parts of the eye and how they function.
- Created by
- Alurhian Leffler
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