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Process where sensory receptors and nervous system receive and represent stimulus energies from the environment
study of the relationship characteristics of stimuli and how we experience them (s & p)
minimum amount of stimuli needed to detect something over 50% of the time if no other stimulus exists
diminishing sensitivity to an unchanging stimulus. Constant exposure to a stimulus causes neurons to fire less frequently
order light hits eye
cornea, pupal (surrounded by iris), lens, retina: rods and cones, bipolar cells, ganglion cells.
not in center, not as detailed, not to individual bipolar, not affected by darkness, don't see color
these are individual cells that respond to specific parts of visual cortex (edges, movement, angles, etc.) pass info to association areas where it is integrated
order brain processes info
retinal processing (rods + cones, bipolar, ganglion), feature detection, parallel processing, recognition
brain cell teams (association areas) process combined info from feature detectors
brain interpreted constructed image based on info from stored imagery. The end result is the scene.
our eyes have red, blue, and green cones and use these to make the rest of the colors
After looking at a red thing for too long, red portion of rods get exhausted. Then on a paper you see green.
purpose of 3 small bones
the vibration causes a piston they create to to transmit sound waves to cochlea in inner ear
Sound waves of different frequency trigger hairs in different areas. Only works for high pitched sound.
brain develops frequency by monitoring frequency of impulses traveling up auditory nerve. Neural impulses travel at same rate as basilar membrane vibrates, same as sound wave.
Conduction Hearing loss
problems in mechanical systems that conducts sound waves to cochlea (ruptured eardrums, broken ear bones)
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