Pupil Cycle Time Distinguishes Migraineurs From Subjects Without Headache

The pupil cycle time test: age variations in normal subjects.

Edge-light pupil cycle time.

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. Expected normal distribution and 95% con...

Edge - light pupil cycle time STEPHEN

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. Expected normal distribution and 95 % confide...

Short Communications Cerebral Blood Flow Asymmetries in Headache-Free Migraineurs

Regional cerebral blood flow (rCBF) asymmetries were studied in controls and patients with common and classic/complicated migraine using Xe inhalation with 8 homologously situated external collimators over each cerebral hemisphere. Migraine patients as a group more frequently had posterior rCBF asymmetries than controls (p<0.03). Although there were no differences in the number of anterior rCBF...

Cerebral blood flow asymmetries in headache-free migraineurs.

Regional cerebral blood flow (rCBF) asymmetries were studied in controls and patients with common and classic/complicated migraine using 133Xe inhalation with 8 homologously situated external collimators over each cerebral hemisphere. Migraine patients as a group more frequently had posterior rCBF asymmetries than controls (p less than 0.03). Although there were no differences in the number of ...