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Definition
| Everything your brain receives is inverted constantly moving in and out of focus. |
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Term
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Definition
All light is waves that is picked up by your eye.
Usually travel in a straight line.
UNLESS
-it bounces off something
-It passes close to a large gravitational field
-it passes through a medium of a different density relative to that it is currently in. |
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Definition
| The closes point you can focus on an object. |
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Definition
| Get cloudy leads to cataracts |
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Term
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Definition
| jello like substance used to stabilize your eye |
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Definition
Garbage that floats around the the vitreous humour
Large increase in floaters in a short amount of time can lead to retina detaching and you will go blind shortly. |
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Definition
| A disk around your retina where you loose field of vision |
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Term
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Definition
| 65% of it is rods and cones, that are visual receptors. in front if all the rods and cons are ganglion cells. Pretty much telephone lines collecting and bring all the "data" to the brain. |
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Term
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Definition
On top of cones
roughly 120 million rods in the eye
Black & white vision
Takes less light to active rods (Night vision)
Not able to see colour or high detail
many to one relationship with Ganglion (120:1)
The rods employ a sensitive photopigment called rhodopsin. |
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Term
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Definition
Below rods
roughly 6 or 7 million cones in the eyes
Colour vision
"red" cones (64%), "green" cones (32%), and "blue" cones (2%)
less sensitive to light used in daytime vision.
Wave length sensitive
mostly in fovea |
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Term
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Definition
| AS light passes through a prism it will spread apart showing the colour each colour. |
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Definition
-Adding light waves together
Red & Green --> White light
Blue & Yellow --> White light
THESE ARE THE TWO BASIC COMPLEMENTS. |
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Term
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Definition
Any two colours on the colour wheel across from each other. Together these two colours make white light. -
Ex: Red & Green
Blue & Yellow |
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Term
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Definition
American flag example
Based on receptor fatigue, one or two of the colour receptors are tired so momentarily they won't be firing. allowing other colour receptors to overpower the fatigued one by showing different colours. |
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Term
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Definition
Red & Green Colourblindness
Blue & Yellow colourblindness |
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Term
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Definition
young/Helmholtz, circe 1800
Theory that the brain uses Red, blue, and green are the only colours that your eyes use to interpret light.
with those 3 colours you can make every colour. |
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Term
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Definition
Short wave cones
middle wave cones
long wave cones |
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Term
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Definition
Show subjects Vertical Red
followed by Horizontal Green bars, do this for half an hour or so and then show them white horizontal and vertical bars. They will then see red horizontal bar, and green vertical bars. This is a life long effect it will not go away. (unexplained) |
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Term
| Anomalous Colour illusion |
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Definition
Blue/gold dress is an example of this.
The induced color appears: (1) vivid and saturated; (2) self-luminous, not a surface property; (3) flashing with eye or stimulus movement; (4) floating out of its confines; and (5) stronger in extrafoveal than in foveal vision. |
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Term
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Definition
I) Oculomotor Cues
II) Pictorial Cues
III) Relative Height
IV) Linear Prospective
V) Atmosphere
VI) Texture Gradient |
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Term
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Definition
I) Accommodation (Lens being squeezed)
II) Convergence (Eyes Closing) |
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Definition
I) Overlap (one object in front of another)
II) Relative size (objects are larger the closer they are) |
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Definition
| higher up in an imagine the father it is away |
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Definition
| Straight lines get loser together the father away they get |
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Definition
| Things look blue and fuzzy in the distance (mountains) |
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Term
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Definition
| pattern changes in the distance |
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Term
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Definition
3D Image with two eyes
(Focus on a object close to your eyes then in the background something will be double) This can happen both ways. |
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Term
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Definition
| In the Ponzo illusion, two identically-sized lines appear to be different sizes when placed over parallel lines that seem to converge as they recede into the distance. |
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Term
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Definition
The illusion that a line like this:
<---->
Will look shorter than a line like this:
>----< |
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Term
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Definition
| The moon looks bigger on the horizon than overhead. |
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Term
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Definition
Hering/Hurvich, circa 1860
1. Spectrally opponent processes which were red vs. green and yellow vs. blue. 2. Spectrally non-opponent processes which was black vs. white. |
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Term
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Definition
| opponent process cells in visual pathway (starting with ganglions in the retina) |
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