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30 Cards in this Set
- Front
- Back
Front (Term) Sensation |
Back (Definition) The detection of environmental stimuli, such as light or sound, from the environment |
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Front (Term) Perception |
Back (Definition) The meaningful interpretation of the information by our brain from sensations |
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Front (Term) Transduction |
Back (Definition) Generally speaking the sensory receptors job is to detect the physical energy from the environment, and converted into electrical impulses or Norrel signals to be transmitted to the brain. This conversion process from physical energy into neural signal is called... |
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Absolute threshold |
The absolute smallest stimulus sensitivity that can be detected |
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Difference threshold |
The difference between two sensory stimuli. It is defined as the smallest possible difference between two stimuli that can be detected 50% of the time |
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Webbers law |
Difference threshold in any given situation is proportional to the intensity of the original stimulus |
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Sensory adaption |
When are censored supposed to a constant stimulus for a period of time, the sensory receptors eventually stop sending neural signals to the brain |
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Top-down processing |
Observing our environment and it stimuli as a whole and drawl on our experiences and expectations about the world to generate a perception. This type of perception drawls on our past experiences and expectations to help us come with an end result |
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Cornea |
Where light enters the eye. This is where contacts lay. |
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Iris |
The colored part of the eye. It can expand and contract to regulate the amount of light entering the eye three people |
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Lens |
A structure that focuses light as it enters your eye the lens is surrounded by tiny muscles that when they can track cheese thickness of the lens to allow the light to focus on the back of the eyeball. |
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Retina |
Found in the very back of the eyeball it is a thin membrane that contains the sensory receptors we are transduction takes place in the eye |
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Photo receptor |
The sensory receptors in the eye |
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Photo receptor |
The sensory receptors in the eye |
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Cones |
Activated by daytime brightness, are sensitive to differences and wave links, allow us to see color and are specialize for visual cutie |
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Photo receptor |
The sensory receptors in the eye |
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Cones |
Activated by daytime brightness, are sensitive to differences and wave links, allow us to see color and are specialize for visual cutie |
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Rods |
More sensitive to low levels of light, so they are primarily active and in lighting in nighttime situations. The level of visual acuity they provide is low, and are not sensitive to color |
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Fovea |
Contains only cones, and is the point of central focus it is located in the very center of your right now |
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Optic disc |
Is not contain any rods or cones. This place where the bundle of nerve fibers that forms the optic nerve leaves the retina through the back of the eyeball to connect to the brain. |
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Visual pathway |
We're photo receptors are process to transfer as neural signals to the brain |
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Bipolar cell |
Special neurons that collect the Norrel signals from this photo receptors and pass them forward to the next layer of cells called the gangly on cells |
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Ganglion cells |
Receives visual data from 100 or more rods and must integrate all of this information together into one signal. |
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Optic nerve |
The axons of all the ganglion cells in the retina come together into a single bundle at the optic disc, it is A large nerve about the thickness of a pencil. The nerve exit are two eyes and then meet together the optic |
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Optic nerve |
The axons of all the ganglion cells in the retina come together into a single bundle at the optic disc, it is A large nerve about the thickness of a pencil. The nerve exit are two eyes and then meet together the optic |
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Optic chaism |
Part of the fibers from each I crosses to the other side of the brain and rest remain on the side same side of the brain this allows for information from your left visual field to be processing the right side of your brain and information from your right visual field to be processed by Loveside your break |
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Thalamus |
The relay station it is often one of the first stops for information coming into the brain. |
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Visual cortex |
The last stop for processing. Every aspect of the incoming visual information is now a size and interpreted it here. Continue special cells called feature detectors they decode every element of the incoming information like angles edges and lines |
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Color perception |
The ability of the brain to interpret differences in wave links of differences in color |
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Trichromatic theory |
Suggest that the color vision results from the actions of three different types of cones. When it comes to light any color in the world can be created by combining the light waves of three primary colors: red green and blue. As it turns out the retina does contain three types of cones, each of which is most sensitive to wavelength of one of these three primary colors |