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Psychology > Eye > Flashcards

Eye Flashcards

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1
Q

Iris

A

Color part of the eye

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2
Q

Cornea

A

Gathers and focuses incoming light

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3
Q

Anterior chamber

A

In front of iris

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4
Q

Constrictor pupillae

A

Muscle of iris, Constricts pupil under parasympathetic stimulation

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5
Q

Aqueous humor

A

Bathes front of eye

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6
Q

Cillary body

A

Located in posterior chamber, Produces aqueous humor

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7
Q

Lens

A

Helps control refraction of incoming light

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8
Q

Canal of Schlemm

A

Where the aqueous humor drains

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9
Q

Suspensory ligaments

A

When cillary muscles contract, these ligaments change shape of lens (accommodation)

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10
Q

Vitreous humor

A

Transparent gel that supports retina

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11
Q

Retina

A

Converts photons into electrical signals

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12
Q

Duplexity/duplicity theory of vision

A

Contains 2 photoreceptors: one for light and dark and one for color

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13
Q

Parallel processing

A

Ability to simultaneously analyze and combine color, shape, and motion

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14
Q

Cones

A

Photoreceptors for color and visual acuity

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15
Q

Rods

A

Photoreceptors for light and dark

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16
Q

Cillary muscle

A

Part of cillary body and under parasympathetic control

17
Q

Posterior chamber

A

Between iris (behind) and lens (front)

18
Q

Dilator pupillae

A

Dilates pupil under sympathetic stimulation

19
Q

Choroid vessels and retinal vessels

A

Provide eye with nutrients

20
Q

Mascula

A

Contains mostly cones, some rods (in retina)

21
Q

Fovea

A

Contains only cones- that’s why visual acuity is best at fovea

22
Q

Optic disk

A

Blind spot, contains no photoreceptors

23
Q

Bipolar cells

A

Type of neuron for senses. Transmit signals from photoreceptors to ganglion cells. Also receive input from horizontal cells to pass onto ganglion cells via amacrine cells. (Communicate via gradient potentials)

24
Q

Ganglion cells

A

Bipolar cells synapse with these and they group together to form optic nerve

25
Q

Amacrine and horizontal cells

A

Receive input from multiple cones and rods. Accentuate slight differences in each bipolar cell (increase perception of contrasts)

26
Q

Optic chiasm

A

Where visual fields from nasal side of retina (temporal visual fields) cross paths (optic nerve is before this)

27
Q

Optic tracts

A

Where fields go after crossing at optic chiasm

28
Q

Lateral geniculate nucleus (LGN)

A

Where visual signals go after optic chiasm. In thalamus

29
Q

Visual cortex

A

Where visual signals go after lateral geniculate nucleus and visual radiations. In occipital lobe

30
Q

Superior colliculus

A

Where visual signals are imputed. Controls responses to visual stimuli and reflexive eye movements

31
Q

Feature detection

A

Our visual pathways contain specialized cells that specialize in detection of color, shape, or motion

32
Q

Visual radiations

A

In temporal and parietal lobes. Where visual signals go before visual cortex

33
Q

Sclera

A

Covers exposed portion of eye

Known as white of the eye

Psychology (5 decks)

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