Visual-vestibular interaction during OVAR in the elderly

被引:0
作者
Furman, JM
Redfern, MS
机构
[1] Univ Pittsburgh, Dept Otolaryngol, Inst Eye & Ear, Pittsburgh, PA 15213 USA
[2] Univ Pittsburgh, Dept Bioengn, Pittsburgh, PA 15213 USA
来源
JOURNAL OF VESTIBULAR RESEARCH-EQUILIBRIUM & ORIENTATION | 2001年 / 11卷 / 06期
关键词
vestibulo-ocular reflex; otolith; human; aging;
D O I
暂无
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
This study assessed visual-otolith interaction in healthy older humans and compared responses from older subjects to those of younger subjects. Using off-vertical axis rotation (OVAR) to stimulate the otolith organs, eye movement responses, measured using electro-oculography. were recorded during rotation in the dark, rotation with an earth-fixed lighted visual surround, and rotation with a subject-fixed fixation target, Results indicated that older subjects, like young subjects, exhibit a modulation component that was as large during rotation with a lighted earth-fixed visual surround as that seen in the dark and a modulation component during rotation with a subject-fixed visual target that was incompletely suppressed, The modulation component was, in general, larger in the older subjects. This study confirms findings from a previous study of visual-otolith interaction in young subjects and suggests that older subjects, like young subjects. have difficulty visually suppressing the modulation component induced by off-vertical axis rotation.
引用
收藏
页码:365 / 370
页数:6
相关论文
共 18 条
[1]   Smooth pursuit eye movements and otolith-ocular responses are differently impaired in cerebellar ataxia [J].
Anastasopoulos, D ;
Haslwanter, T ;
Fetter, M ;
Dichgans, J .
BRAIN, 1998, 121 :1497-1505
[2]  
BALOH RW, 1993, EXP BRAIN RES, V95, P509
[3]   EYE-MOVEMENTS INDUCED BY OFF-VERTICAL AXIS ROTATION (OVAR) AT SMALL ANGLES OF TILT [J].
DARLOT, C ;
DENISE, P ;
DROULEZ, J ;
COHEN, B ;
BERTHOZ, A .
EXPERIMENTAL BRAIN RESEARCH, 1988, 73 (01) :91-105
[4]  
Demer J L, 1994, J Vestib Res, V4, P355
[5]   AGE-DIFFERENCES IN OCULOMOTOR RESPONSES TO STEP CHANGES IN BODY VELOCITY AND VISUAL SURROUND VELOCITY [J].
DIZIO, P ;
LACKNER, JR .
JOURNALS OF GERONTOLOGY, 1990, 45 (03) :M89-M94
[6]  
Furman JM, 1996, J VESTIBUL RES-EQUIL, V6, P93, DOI 10.1016/0957-4271(95)02009-8
[7]   Otolith-ocular responses in familial episodic ataxia linked to chromosome 19p [J].
Furman, JM .
ANNALS OF NEUROLOGY, 1997, 42 (02) :189-193
[8]  
FURMAN JM, IN PRESS J VEST RES
[9]   OFF-VERTICAL AXIS ROTATION - A TEST OF THE OTOLITH-OCULAR REFLEX [J].
FURMAN, JMR ;
SCHOR, RH ;
SCHUMANN, TL .
ANNALS OF OTOLOGY RHINOLOGY AND LARYNGOLOGY, 1992, 101 (08) :643-650
[10]   VESTIBULAR FUNCTION IN PERIODIC ALTERNATING NYSTAGMUS [J].
FURMAN, JMR ;
WALL, C ;
PANG, D .
BRAIN, 1990, 113 :1425-1439