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This paper describes a resource for the study of spontaneous speech under stress, a corpus of 216 unscripted task-oriented dialogues conducted by normal Canadian adults in the course of a sleep deprivation experiment under 3 drug conditions. Speakers carried out the route-communication task (see [1]) in alternation with a battery of other tasks over a 6-day(More)
We measured relative afferent pupillary defects in 105 patients with various stages of optic neuritis. We detected pupillary defects in 96% of acute unilateral cases, 92% of recovered unilateral cases 91.7% of acute cases with evidence of optic neuropathy in the other eye, and 65.8% of recovered bilateral cases. With careful testing, one can find relative(More)
We examined the pupils of 55 amblyopic subjects to determine whether a pupillary defect could be detected in the amblyopic eye. We found relative afferent pupillary defects in 45 of the subjects; these defects were equal to or larger than 0.3 log unit (that is, easily visible) in 29 subjects. The pupillary defect was always in the amblyopic eye, but it(More)
The prognosis for vision in most patients with pseudotumor cerebri is excellent; however, visual loss, which is the only serious complication, may occur either early or late in the course of the disease. A group of 57 patients was followed up five to 41 years with visual fields, visual acuity, and fundus photographs. Blinding visual loss or severe visual(More)
Idiopathic intracranial hypertension is a diagnosis most frequently made in young, overweight women. The chief hazard to the patient is permanent visual loss due to chronic papilledema. After the diagnosis has been clearly established using lumbar puncture and imaging techniques, the neurologist is involved in helping to lower the intracranial pressure,(More)
The authors developed an automated method of pupil perimetry by linking an infrared video pupillometer to a Humphrey Field Analyzer. Software was developed to automatically analyze the pupil responses to focal light stimuli and display the results graphically. All 76 locations of Humphrey program 30-2 could be tested twice within 5.5 minutes and the(More)
A thin slit-lamp beam illuminating the pupil margin produces clearly visible pupil oscillations. These oscillations can be timed with a stopwatch, thus producing a measurement of the "edge-light" pupil cycle time'. The pupil cycle time is remarkably stable in various testing situations and is repeatable within about +/- 3% over extended periods of time.(More)
Five patients with recurrent, lateral rectus palsy in childhood, examined at the University of Iowa Hospitals over a period of 22 years, are reported. During the same period, 131 abducens nerve palsy patients, younger than 18 years of age, were evaluated. Eighteen similar patients, most single case reports, are reviewed from the literature. All reported(More)
Eighteen patients with central serous retinopathy (CSR) underwent a battery of visual function tests when first seen and after resolution of the subretinal fluid. Eyes with CSR had minimal relative afferent pupillary defects, reduced critical flicker-fusion thresholds, prolonged visual evoked potential (VEP) latencies, increased errors on the(More)