New test methods for estimation of facial weakness.

provides means of quantitative estimation of facial weakness. Graphic presenta tion of the dynamic aspects of facial weakness was made possible by recording of interlabial pressure through a pressure transducer during whistle action, recording of resistance changes between two electrodes produced by wrinkle and smile actions, and by recording of blinking speed with an electronystagmography. These tests are simple, quantitative, and applicable to patients without discom fort. Differences between healthy and affected sides in these records provide reliable information on the effect of treatment. A simultaneous recording of these graphs is valuable to demonstrate associated movements. brain nerve; ear