eyes; eyesight; ears; hearing; vocab
Terms : Hide Images
| 288994301 | sensation | process by which we receive stimulant energies from our sensory receptors and nervous system | |
| 288994302 | perception | process of organizing and interpreting sensory information | |
| 288994303 | bottom-up processing | info processing that begins with sense receptors and works up to brains integration | |
| 288994304 | top-down processing | info processing guided by higher level mental processing | |
| 288994305 | absolute threshold | the minimum stimulation needed to detect a particular stimulus 50% of the time | |
| 288994306 | sensory adaptation | diminished sensitivity due to constant stimulation | |
| 288994307 | werber's law | to be perceived as different two stimuli must differ by a constant minimum percentage (not a constant amount) | |
| 288994308 | pupil | opening that adjusts to allow light to enter eye | |
| 288994309 | Iris | muscle tissue that controls the size of the pupil | |
| 288994310 | lens | transparent structure behind pupil that accomodates to focus objects on the retina | |
| 288994311 | retina | light sensitive inner eye that contains rods and cones plus layers of neurons that begin processing visual info | |
| 288994312 | rods | retinal receptors that detect black and white, peripheral vision, night vision | |
| 288994313 | cones | retinal receptors that are near center of the retina that function in daylight or well light areas and detect fine detail and color | |
| 288994314 | optic nerve | nerve that carried neural impulses from eye to brain | |
| 288994315 | blind spot | location were optic nerve leaved the eye so no receptor cells are there | |
| 288994316 | fovea | central point of focus in the retina, location of cones | |
| 288994317 | feature detectors | nerve cells in the brain that response to specific features of a stimulus such as shape angle or movement | |
| 288994318 | parallel processing | processing several aspects of a problem as the same time | |
| 288994319 | color constancy | perceiving familiar objects as having consistent color even if changing light alters the wavelengths reflected on the object | |
| 288994320 | accommodation | lens ability to move to focus objects | |
| 288994321 | color spectrum | blue and violet (short) --> red (long) | |
| 288994322 | nearsightedness | condition in which nearby objects are seen more clearly than distant objects because distant objects focus in front of the retina | |
| 288994323 | farsightedness | condition in which faraway objects are seen more clearly than near objects because image of near objects focus behind the retina | |
| 288994324 | young-helmholtz trichromatic theory(three-color theory) | theory that the retina contains 3 different color receptors (red, blue, green) which are stimulated in different combinations to produce other colors; explains color blindness | |
| 288994325 | opponent- process theory | theory that opposing retinal processes enable color vision- red/green, blue/yellow, white/black; explains afterimages | |
| 288994326 | middle ear | between eardrum and cochlea containing three ossicles (hammer, anvil, stirrup) that concentrate the vibrations of the eardrum on the choclea's oval window | |
| 288994327 | inner ear | contains the cochlea, semicircular canals, and vestibular sacs; inner most area | |
| 288994328 | cochlea | coiled tube filled with fluid through which sound waves trigger nerve impulses | |
| 288994329 | place theory | theory that connects the pitch of a sound with the place where the cochlea's membrane, low frequency at the end | |
| 288994330 | frequency theory | theory that the rate of nerve impulses traveling up the auditory nerve matched the frequency of the tone- explains how we hear low sounds but need to implement volley principle to be able to hear loud sounds | |
| 288994331 | conduction hearing loss | hearing loss caused by damage to cochlea's hair cells or nerves; aka nerve deafness | |
| 288994332 | gate control theory | theory that the spinal cord contains neurological gate that blocks pain signals or allows them to pass. Gate is opened by activity of pain going up small nerve fibers and gate is closed by activity of large fibers or by info coming from brain | |
| 288994333 | kinesthesis | sense of our body parts' position and movement |
