1997 Fiscal Year Final Research Report Summary
Clinical and basic study to establish the functional differentiation test between the superior and the inferior vestibular nerve.
| Project/Area Number |
07457396
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Otorhinolaryngology
|
|---|
| Research Institution | Tokyo Medical & Dental University Otolaryngology |
|---|
Principal Investigator |
KOMATSUZAKI Atsushi Tokyo Medical & Dental University, Otolaryngology, Professor, 医学部, 教授 (50010195)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SUGIMOTO Tarou Tokyo Medical & Dental University , Otolaryngology, assistant, 医学部, 助手
TSUNODA Atsunobu Tokyo Medical & Dental University , Otolaryngology, assistant, 医学部, 助手 (00280983)
|
|---|
| Project Period (FY) |
1995 – 1997
|
| Keywords | superior vestibular nerve / inferior vestibular nerve / galvanic body sway test Test / acoustic neuroma |
|---|
| Research Abstract |
In order to evaluate the function of the inferior vestibular nerve (IVN), we used the caloric stimulation as the indicatior of the superior vestibular nerve (SVN) and galvanic body sway test (GBST) as total stimulation of the vestibular nerve.
The materials of this project were chosen from the case of acoustic neuromas, because from our study, it is known that more than 80% of the cases of the tumors were originated from IVN.
The results obtained were as follows.
1. When the function of the SVN is good and the minimal laterality is present in GBST,this laterality is from the functional disturbances of the IVN.
2. When the results of caloric stimulation and GBST as well show marked laterality, not only the function of SVN but IVN are also decreased.
3. When the caloric response has no laterality and GBST has moderate laterality, this means the function of the IVN has to be decreased.
These results will contribute to the evaluation of SVN and IVN in cases of Meniere's disease, sudden deafness with vertigo, vestibular neuronitis and so forth.
|
