Vestibular and oculomotor influences on visual dependency.
Vestibular and oculomotor influences on visual dependency.
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DOI：
10.1152/jn.00895.2015
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发表时间：
2016-09-01
影响因子：
2.5
通讯作者：
Patel M
中科院分区：
文献类型：
--
作者：
Roberts RE;Da Silva Melo M;Siddiqui AA;Arshad Q;Patel M
参与者使用杆盘测试（视觉依赖性测试）做出垂直度判断，然后在热量冲洗后重复。如果旋转盘和热量的组合增加了扭转眼球震颤的慢相速度，则主观垂直度的倾斜度增加，而眼睛速度的降低与倾斜度的减少相关。因此，视觉依赖性测量不仅受感知风格调节，而且还可以反映局部前庭眼功能，特别是眼球扭转运动。一个人依赖视觉刺激进行空间定向的程度称为视觉依赖性（VD）。 VD 被认为是一种受心理因素影响的感知特征或认知风格，并由参与空间定向的感觉输入的中央重新加权介导。 VD 通常通过杆盘测试来测量，其中参与者在背景静止或围绕视线旋转的背景（动态 SVV）的情况下将中心杆与主观视觉垂直 (SVV) 对齐。尽管这项任务已被用来评估健康和前庭疾病中的 VD，但扭转眼球震颤眼球运动可能对个人表现产生什么影响尚不清楚。使用热量耳冲洗、3D 视频眼科检查和杆盘测试，我们发现热量扭转性眼球震颤可调节 VD 的测量，并证明冲洗后倾斜的增加与眼球扭转性眼球运动的变化呈正相关。当热量引起的扭转眼球运动的慢相方向与旋转视觉刺激引起的方向一致时，倾斜会显着增加。当这两个扭转分量相反时，就会减小。这些发现表明，VD 的测量可能会受到热量刺激引起的动眼神经反应的影响。这些发现对于临床研究具有重要意义，因为它们表明，VD（在前庭疾病中经常增加）不仅受到认知方式变化的调节，而且还受到眼球运动（尤其是眼球震颤）的调节。
Participants made verticality judgments using the rod-and-disk test, a test of visual dependence, and then repeated after caloric irrigation. If the combination of rotating disk and caloric increased the slow-phase velocity of the torsional nystagmus the tilt in subjective verticality increased, whereas reductions in eye velocity were associated with reduced tilt. Thus visual dependency measures are not only modulated by perceptual style but can also reflect local vestibulo-ocular function, specifically torsional eye movements. The degree to which a person relies on visual stimuli for spatial orientation is termed visual dependency (VD). VD is considered a perceptual trait or cognitive style influenced by psychological factors and mediated by central reweighting of the sensory inputs involved in spatial orientation. VD is often measured with the rod-and-disk test, in which participants align a central rod to the subjective visual vertical (SVV) in the presence of a background that is either stationary or rotating around the line of sight—dynamic SVV. Although this task has been employed to assess VD in health and vestibular disease, what effect torsional nystagmic eye movements may have on individual performance is unknown. Using caloric ear irrigation, 3D video-oculography, and the rod-and-disk test, we show that caloric torsional nystagmus modulates measures of VD and demonstrate that increases in tilt after irrigation are positively correlated with changes in ocular torsional eye movements. When the direction of the slow phase of the torsional eye movement induced by the caloric is congruent with that induced by the rotating visual stimulus, there is a significant increase in tilt. When these two torsional components are in opposition, there is a decrease. These findings show that measures of VD can be influenced by oculomotor responses induced by caloric stimulation. The findings are of significance for clinical studies, as they indicate that VD, which often increases in vestibular disorders, is modulated not only by changes in cognitive style but also by eye movements, in particular nystagmus.
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DOI：
10.1111/j.1749-6632.1999.tb09193.x
发表时间：
1999-01-01
期刊：
OTOLITH FUNCTION IN SPATIAL ORIENTATION AND MOVEMENT
影响因子：
--
作者：
Brandt, T;Dieterich, M
通讯作者：
Dieterich, M
影响因子：
2.6
作者：
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通讯作者：
Bronstein, Adolfo M.
影响因子：
3.7
作者：
Cousins, Sian;Cutfield, Nicholas J.;Bronstein, Adolfo M.
通讯作者：
Bronstein, Adolfo M.
影响因子：
3.3
作者：
Godemann, F;Koffroth, C;Heuser, I
通讯作者：
Heuser, I
影响因子：
11
作者：
Lahmann, Claas;Henningsen, Peter;Schmid, Gabriele
通讯作者：
Schmid, Gabriele