Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
psych U4M18
vision
| Question | Answer |
|---|---|
| what are the two things that determine the sensory experience of light | wavelength and intensity (brightness/loudness) |
| cornea | protects the eye |
| pupil/iris | controls the amount of light that comes in |
| lens | focuses light on retina |
| accomdation | the process where the eye's lens changes shape to focus near or far objects on the retina |
| retina | contains receptor cells (rods and cones) and other neural cells (transduction!) |
| photoreceptors | sensory neurons that convert light into signals. |
| rods | receptors that detect the brightness of light (used for night vision and picks up on white and black colors) |
| Cones | functions in daylight; Color |
| fovea | has the highest acuity in the retina |
| why do we have a blind spot | unlike the cones, which can transmit messages through connected pathways, rods have no direct connection and when the ganglion cell leaves the eye to carry info to the brain, there are no receptor cells |
| bipolar cells | (between optic nerve and row of rods and cones) They transit signals from rods and cones to the ganglion cells |
| another name for optic nerve | ganglion cell |
| optic chiasm | some fibers of the optic nerve cross over to the other side of the brain. |
| feature detectors | Nerve cells in the brain that respond to specific features of the stimulus, such as shape, angle, mvmt |
| parallel processing | the brain processing the many aspects of a problem simultaneously |
| how does parallel processing analyze a visual scene | it divides the scene into motion, form, depth, and color and works on each aspect simultaneously. Then they are all integrated. |
| trichromatic theory | the retina has 3 different color receptors which are most sensitive to red, green, and blue, which can produce any color (young-hemholtz theory) |
| opponent process theory | opposing retinal processes, which are red-green and yellow-blue, enable color vision |
| color blindness | the inability to distinguish color |
| how does color vision work | in each opposing retinal process, either one color is "on" and the other is "off". that's why we can combine red and blue but not red and green |
| if we see smaller and wider waves that means the color is... | duller, less bright |
| light in the light spectrum is converted into... | electromagnetic energy |
| bipolar cells | specialized neurons connected to photoreceptors |
| ganglion cells | are connected to bipolar cells. the axons join together to form the optic nerve |
| optic nerve | carries neural impulses from the eye to the brain |
| hue | wavelengths/colors |
| saturation | vividness of a color |
| brightness | strength of the light |
| if the wavelength has a higher amplitude... | the color is brighter |
| afterimage | the complimentary color |
| young-hemholtz theory | cones are activated by light waves of blue, red, and green |
| what does the trichromatic theory explain | you can see all colors by mixing the three; explains colors and color blindness |
| opponent process theory | cells operate antagonistically |
| what are the three pathways of the opponent process theory | black/white, red/green, blue/yellow |
| what does the opponent process theory explain | explains afterimage effect |
| dichromats | people who cannot distinguish between the antagonizing colors |
| monochromats | people who see only in shades of black and white (ones don't work) |
| what are normal color seeing people called | trichromats |
Created by:
allyson.lee
Popular Psychology sets