PubMed · 6637669
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Y Mashima, Y Oguchi. 1983. [Pattern ERG--several moot points for clinical application].. https://pubmed.ncbi.nlm.nih.gov/6637669/
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This technique was designed to establish a simple, objective evaluation system for facial paralysis through the use of a personal computer. A total of 24 marks were placed on the faces of subjects for the following procedures. Movements of the face were photographed with a video-camera and fed continuously into the computer. Ten frames per movement representing facial movement from rest to maximum movement were selected for analysis. By means of a digital image-processing technique, only the marks placed on the face were extracted, and the movement of these marks was quantitatively analyzed. A total of 44 healthy subjects with no history of facial paralysis were used as a normal control group. The patients with facial paralysis consisted of nine subjects with Bell's palsy and three with Ramsay Hunt syndrome. In the eye-closing motions, no significant differences were found between the sum of the movement distances on the left and right sides in each normal subject. However, the patients with facial paralysis showed distinct differences from those obtained in the normal subjects. The improvement process was also evaluated with a ratio of affected- and normal-side facial movements.
Changes in saccade duration, saccade amplitude and slope of the regression line relating amplitude and duration were assessed during a 2 hour air traffic control simulating task. Mean duration significantly increased as a function of time on task (TOT). Saccade amplitude decreased during the beginning part of the two hour period, increased in the middle and decreased in the final part of task performance. Differences in saccade duration were also assessed for saccades occurring during and independent of eye blinks. When matched for amplitude, electrooculographically measured saccades occurring during a blink were significantly slower than those occurring independent of a blink. Our results suggest caution in interpreting saccade velocity change as an index of 'fatigue' since most of the reduction in average saccade velocity may be secondary to increases in blink frequency.