Electronystagmography versus videonystagmography.
Electronystagmography (ENG) and videonystagmography (VNG) are eye movement recording methods used for the evaluation of balance disorders.


OBJECTIVE
To compare literature information on the similarities, differences, advantages e disadvantages between ENG and VNG.


METHODS
review of the scientific literature.


RESULTS
ENG and VNG are very helpful methods for evaluating balance disorders, due to their capacity to recognize signs of peripheral or central vestibular dysfunction and to pinpoint the side of the lesion. Major advantages of VNG are related to calibration, temporospatial resolution, and recording of horizontal, vertical and torsional eye movements.


CONCLUSIONS
VNG is a new technology that presents advantages in the evaluation of eye movements; however, despite its disadvantages, ENG is still considered a valuable test in the clinical setting.
Ganança
Maurício Malavasi
MM
Paulista School of Medicine (UNIFESP-EPM), Sao Paulo Federal University, Sao Paulo, Brazil. mauricio.gananca@globo.com
Caovilla
Heloísa Helena
HH
Ganança
Fernando Freitas
FF
D004584:Electronystagmography / Q000295:instrumentation / Q000379:methods*; D004585:Electrooculography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D012680:Sensitivity and Specificity; D015837:Vestibular Diseases / Q000175:diagnosis*; D014741:Video Recording