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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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How many layers are in the LGN
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6
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which layers of the LGN are ipsilateral
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2,3, & 5
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"2+3=5"
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which layers of the LGN are Magnocellular
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1&2
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which layers of LGN are parvocellular
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3-6
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Where is Meyer's loop located
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termporal lobe
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what passes thru Meyer's loop
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fibers for the superior VF (inf. retinal fibers)
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what fibers travel thru the optic radiations in the parietal lobe/
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ipsilateral temporal fibers of the inf. VF (temp. fibers of sup. retina)
contralateral nasal fibers of the inf. VF |
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striate cortex is also known as?
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V1
primary visual cortex Brodmann's area 17 |
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where do nasal fibers cross?
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at the optic chiasm
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lesion results in bitemporal hemianopsia
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which lesions result in quadrantanopsia
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Meyer's loop
optic radiations |
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obj. located closer than the horopter have what type of disparity
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crossed disparity
"img. of right eye projects to the left and img. of left eye projects to the right" |
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obj. located further than the point of fixation have what type of disparity
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uncrossed disparity
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where are the first binocular neurons of the vixual cortex located
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V1
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where are ocular dominance columns located
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V1
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how many layers are there in the ocular dominance columns
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7
7 "I"psilateral 1 "C"ontralateral 4 "E"qual innervation |
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when does the critical period for a kitten, monkey and human begin
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kittin 3wks
monkey ~birth human ~birth-6mo. |
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when does the critical period peak
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kitten 4-6wks
monkey 1mo. human 1-2yrs |
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when does the critical period end
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kitten 9-12mo
monkey 2 yrs human 7-9yrs |
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why is aliasing not typically experienced in the fovea
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retinal img is optimally sampled in the center
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how is MTF (modulation transfer fxn)
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apply Fourier analysis to the point spread fxn
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what is the optimum pupil diam. for imaging fine spatial detail
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2.5mm
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do peripheral aberrrations increase or decrease with increased pupil size
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increase
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low-spatial frequency fall-off is due to________
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lateral inhibition and Hz cells in the outer retina
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evidence for mult. spatial fequency channels
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adaptation
induction masking |
"AIM"
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what does SMTF tell us
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how well and optical lens transfers info.
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what does CSF tell us
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shows contrasxt sensitivey as a fxn of spatial frequency
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what is the high frequency cut-off for young healthy eyes
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60 cyc/deg (60Hz)
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how do you find the minimum angle of resolution (MAR)
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reciprocal fo the Snellen fraction
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does a neonate have low spatial frequency fall-off
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no
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