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Definition
| the process of converting outside stimuli, such as light , into neutral activity. |
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| just noticeable difference, difference threshold |
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Definition
| the smallest difference between two stimuli that is detectable 50 percent of the time. |
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Definition
the lowest level of stimulation that a person can consciously detect 50 percent of the time the stimulation is present.
ex. sight a candle flame at 30 miles on a clear dark night.
hearing, the tick of watch 20 feet away in quiet room
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Definition
| sensation occurs when special receptors in the sense organs the eyes, ears, nose, skin, and taste buds-are activated, allowing various formas of outside stimuli to become neutral signals in the brain |
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Definition
tendency of sensory receptor cells to become less responsive to a stimulus that is unchanging
when you eat the food that you put in your mouth tastes strong at first, but as you keep eating the same thing, the taste does fade somewhat. smell taste and touch are all subject to sensory adaptation |
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Definition
tendency of the brain to stop attending to constant, unchaging information.
brain getting use to a sound to the point where u dont notice the sound. |
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| the change in the thickness of the lens as the eye focuses on objects that are far away or close |
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Definition
| are in the retina where axons of the three layers of retinal cells exit the eye to form the optic nerve, insensitive to light |
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Definition
| the recovery of the eye's sensitivity to visual stimuli in darkness after exposure to brigh lights |
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Definition
| the recovery of the eyes sensitivity to visual stimuli in light after exposure to darkness. |
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Definition
| theory of color vision tht proposes three types of cones: red blue and green |
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Definition
| theory of color vision that proposes visual neurons are stimulated by light of one color and inhibited by light of another color. |
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Term
| the path of light through the eye? |
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Definition
| cornea, pupil, lens, vitreous humor, retina |
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Definition
| cycles or waves per second, measurement of frequency |
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| olfaction(olfactory sense) |
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Definition
the sensation of smell
the cells have dozens of little hairs calle cilia |
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Definition
| visual sensory receptors found at the back of the retina, responsible for non-color sensitivity to low levels of light |
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Definition
| visual sensory receptors found at the back of the reitna, responsible for color vision and sharpness of vision. |
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Definition
| the visible part of the ear |
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Definition
| short tunnel tht runs from the pinna to the eardrum |
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Definition
| snail-shaped structure of the inner ear that is filled with fluid |
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Definition
| bundle of axons from the hair cells in the inner ear. |
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Definition
| areas of the brain located just above the sinus cavity and just below the frontal lobes that receive information from the oldfactory receptor cells |
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| the body senses consisting of the skin senses, the kinesthetic sense, and the vestibular senses. |
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Definition
| the sensation of touch, pressure, temperature, and pain |
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Definition
| sense of the location of body parts in relation to the groud and each other. |
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Definition
| the sensations of movement, balance, and body position. |
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Term
| 20 feet in size organ on body? |
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Definition
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Definition
| free nerve endings just beneath the uppermost layer of the skin that respond to change in temperature and to pressure and pain. |
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Definition
| pain in the organsis called viscreal pain |
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Term
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Definition
| pain sensation in skin, muscles, tendons, and joints are carried on large nerve fibers and are called somatic pain. |
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Term
| congentinal analgesia and congenital insentivity to pain with anbidrosis |
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Definition
| a rare condition where people cant feel pain. |
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| are three somewhat circular tubes that are also filled with fluid that will stimulate hairlike receptors when rotated |
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Definition
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Definition
| the analysis of the samller features to build up to a complete perception |
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Definition
| the tendency to perceive things a certain way because previous experiences or expectation influence those perceptions |
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