IUBio GIL .. BIOSCI/Bionet News .. Biosequences .. Software .. FTP

Positional Tests and ENG

evelyn sowles hbcsc202 at DEWEY.CSUN.EDU
Mon Feb 19 19:55:38 EST 1996

On 15 Feb 1996, Tom Boismier wrote:

> In article <Pine.HPP.3.91.960213181143.1321A-100000 at huey.csun.edu>, 
> hbcsc202 at DEWEY.CSUN.EDU says...
> >
> >Hello.  I am a graduate student in audiology and I am doing some research 
> >about positional tests during the ENG battery.  I would like to have 
> >information about the normal and abnormal findings during these tests and 
> >any articles or research that subtantiates these findings.  
> >
> >Thanks in advance.
> >
> >Evelyn Sowles
> >Cal State Northridge
> Check the classic text, Barber + Stockwell's "Manual of Electronystagmograhy".
> Look at Stockwell's "ENG Workbook" for sample tracings. Do a Medline search 
> for electronystagmography and positional. Find the newer literature (David Zee 
> and others) that detail the thought preocesses behind using positional 
> nystagmus as an indicator of peripheral vestibular involvement IF computerized 
> oculomotility tests are within age-matched normal limits. 
> The classic literature states that positional nystagmus is a non-localizing 
> finding, indicating either peripheral vestibular or central vestibulo-ocular 
> pathway involvement. Newer studies using computerized ENG with age-matched 
> norms for pursuit and random saccade tests suggest that when the oculomotility 
> tests are carefully performed and analyzed as normal for age, central 
> vestibulo-ocular pathways can be ruled out. Any positional nystagmus other 
> than what is considered to be within normal variation (see Barber + 
> Stockwell), would then suggest peripheral localization.
Thanks so much for your help.  I appreciate it.

Evelyn Sowles
Cal State Northridge

More information about the Audiolog mailing list

Send comments to us at archive@iubioarchive.bio.net