Abstract
ENG recording was performed in cases of Meniere's disease during vertiginous attack using a newly devised long recording portable electronystagmograph which was capable of recording nystagmus on a cassette tape f or over 24 hours. The ENG findings were as follows:
1) In some cases nystagmus recorded during attacks changed the direction, but in other casesnystagmus recorded during attacks did not change the direction.
2) Nystagmus during attacks appeared and disappeared periodically.
3) In one case, ENG recording could fortuitously be performed before an attack and till the end of it. Nystagmus directing to the affected side was recorded before the attack and in the begining of the attack, and nystagmus directing to the non-affected side was recorded about the middle of the attack, and then nystagmus directing to the affected side was recorded again at the end of the attack.
