Abstract
Several kinds of audiometric tests and equilibrium tests were performed on 3 patients with untreated epilepsy and 7 treated patients.
The results were as follows:
1) The pure tone hearing test was normal in all cases.
2) The non-distorted speech test showed normal articulation score in all cases.
3) The frequency distorted speech test by using 2, 400Hz low-pass filtered speech sounds showed low articulation score bilaterally in most of cases.
4) The time distorted speech test by using interrupted speech sounds was low bilaterally in most of cases.
5) The binaural fusion phenomenon by using the time distorted speech was low in all untreated cases, but was normal in most of treated cases.
6) The horizontal and vertical optokinetic nystagmus were inhibited in all untreated cases.
7) The circular eye-tracking test was abnormal in all untreated cases.
