Term
| In which theory of probability summation are the inputs from each eye not combined but the central decision making process has access to both monocular inputs? |
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Definition
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Term
| In which theory of probability summation is the increase in sensitivity using two eyes as opposed to one greater than what would be predicted by probability alone? |
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Definition
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Term
| What three stimulus characteristics must occur for probability summation to occur? |
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Definition
1) stimuli must be synchronous in both time and space when presented to both eyes 2) Stimuli must be imaged on corresponding points or on points within Panum's area 3) Stimuli must be detected by each eye with an interocular delay of no more than 100ms. |
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Term
| What can we expect about a patients binocular vision if he exhibits a lack of binocular summation over a large range of stimulus conditions? |
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Definition
| We can expect binocular vision problems that result from a lack of fusion also exist |
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Term
| What is the term for the fact that under binocular conditions when you are receiving more reflected light off the pencil, you actually see the pencil as dimmer if one eye is inhibited by a neutral density filter, than you would see if you viewed the pencil only with the uninhibited eye? |
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Definition
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Term
| Are there more binocularly driven cells in V1 or V2? |
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Definition
| V2 aka Broadman area 18, V1 would be Broadman area 17 |
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Term
| Do V1 neurons code for subjective or tilted contours? |
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Definition
| V1 codes for tilted contours while V2 codes for subjective contours. |
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Term
Do subjective contours or tilted contours produce stronger binocular aftereffects? |
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Definition
| Subjective contours because they're in V2 which has more binocular cells. |
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Term
| What exhibits more interocular transfer, random dot moving displays or moving grating stimuli? |
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Definition
| Random dot moving displays because MT cortex, Broadman area 18 & 19 is responsible for motion processing and contains a lot of binocular cells. |
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Term
| Are excitatory or inhibitory binocular interactions preserved in amblyopia? |
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Definition
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Term
| Name three abnormal binocular interactions in stereoblind strabismic patients? |
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Definition
1. No subthreshold summation 2. Flicker thresholds do not change 3. No subthreshold summation |
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Term
| Do anisometropic or strabismic amblyopes exhibit more binocular summation impairment? |
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Definition
| Strabismic amblyopes exhibit more binocular impairment than anisometropic amblyopes. |
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Term
| Which type of amblyopia produces only central visual field loss of interocular transfer of Contrast Threshold Elevation? |
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Definition
Strabismic, anisometropic amblyopia leads to peripheral as well as central visual field loss of interocullar transfer of Contrast Threshold Elevation. |
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