Extract an extraordinary amount of info from these echoes. What is the sound wave process(think german….EHASOCBOHATT)?ĥ.Ĝones(concentration in fovea) on Retina Process by which any sensory info such as light, sound, pressure, etc is transferred to a neural impulse. Theory of color vision that holds the three sets of color receptors (yellow- blue, red- green, black-white) respond to determine the color you experience. People totally color-blind, extremely rare. People blind to either red-green, or yellow-blue. People who have normal color vision, these people perceive all hues by combining the 3 primary colors. Theory of color vision that holds that all color perception derives from three different color receptors in the retina (usually red, green, & blue receptors), also accounts for some color blindness. Light uses wavelengths, paint uses absorbed & reflected. What is the difference between light and Paint? Process of mixing pigments each of which absorbs some wavelengths of light & reflects others. Process of mixing lights of different wavelengths to create new hues. The nearness of a color to white as opposed to black. Richness or vividness of 1 type of color(hue) What hues I can see depends on the wavelength of the light reaching my eyes. There are 150 distinct hues that most people can recognize. Specialized neurons with one axon & one dendrite: Left side of body, touch, movement, spatial abilities, control of left hand. Right side of body, touch, movement, language, logic, speech, writing controls of right hand. Such as horizontal or vertical lines, even detects movement or lines of specific orientation. Highly specialized brain cells to detect particular elements of the visual field. Point near base of the brain where some fibers in the optic nerve from each eye cross to the other side of the brain. Neurons that connect the bipolar cells in the eyes to the brain Sense experiences that occurs after a visual stimulus has been removed if stimulation remained constant & eyes adapted completely, all receptors would become sensitized & we wouldn’t be able to see. Not enough energy in the dark to stimulate two cones to respond to colors, In the dark u only see black, white, & grey.ĭecreased sensitivity of rods & cones in bright light( takes 1 min), for rods & cones to be adapted. Process by which rods & cones become more sensitive to light in response to lowered levels of illumination. Sensitivity of rod & cone changes according to how much light is available. Cones are sensitive in the dark for first 5-10min, then they don’t get any more sensitive.Ībility to visually distinguish fine details. Greatest density just outside of the fovea.Ĭolor & vision,see well in the light/dark with cones.less sensitive to light than rods are found in the Fovea, (images taken at highest quality)no rods r here. Rods, more sensitive to light than cones. Like black and white colors only not colors, responsible for night vision & perception of brightness sensitive in dark for 20 min/reach max sensitivity after 30 min. How many types of Receptor Cells are there? On the retina these cells are sensitive to only a fraction of the spectrum of electromagnetic energy, including light ( small segment of the EM spectrum to which my eyes are sensitive to) Pupil contracts to make it smaller to protect the eye & to see better.ĭepressed spot that is the center of the visual field, only cones are in here(only for bright light), there are NO RODS. Where the axons of all ganglion cells leave the eye & where there are no receptors, therefore the object won’t be seen, its a small spot on the retinaĭialate, or get bigger to let more light in. Lining of the eye containing receptor cells that are sensitive to light in the back of the eyeball.) (transparent part of eye inside pupil that focuses light onto retina). Small opening in the iris through which lights enters the eye), the IRIS is the colored part of the eye. Transparent protective coating over the front part of the eye). What percentage of human sense receptors are in our eyes? Least amount of energy that can be detected as a stimulation 50% of the time, it’s quite low for human senses.Īdjustment of the senses to the level of stimulation they’re receiving.ġ830’s that the difference is a constant fraction or proportion of the specific stimulus being judged. Light waves, sound vibrations, airborne or blood borne chemical molecules stimulates a receptor cell. Specialized cell that responds to a particular type of energy. What do Sensation & perception have in common?Īre the foundation of consciousness, & tells us what’s happening inside& outside of our bodies. Mental process of sorting, identifying, & arranging these bits into meaningful patterns. The experience of sensory information, includes smells, sights, sounds, tastes, balance, touch, & pain (raw data) of experience.
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