McClure J A, Lycett P
Arch Otolaryngol. 1983 Oct;109(10):682-7. doi: 10.1001/archotol.1983.00800240048009.
Pathological vestibular asymmetry can be divided into static and dynamic types. Static asymmetry results from a unilateral change of the resting neural input. Acute, chronic, and recovery stages can be recognized if one interprets the direction and intensity of the resultant spontaneous nystagmus relative to the clinical picture. Static asymmetry is additive with induced asymmetry and manifests itself as directional preponderance or as the direction-fixed or direction-changing feature of positional nystagmus. Dynamic asymmetry refers to abnormal asymmetry induced by normal head movements. For example, with unilateral hypofunction, a greater gain is observed with head movement toward the unaffected side, suggesting nonlinearity as specified by Eswald's second law. Visually induced vestibular asymmetry is a form of dynamic asymmetry generated by convergence of visual-vestibular information, and causing symptoms in certain "motion-active" visual environments.
病理性前庭不对称可分为静态和动态两种类型。静态不对称是由静息神经输入的单侧变化引起的。如果根据所得自发性眼震的方向和强度与临床表现来判断，可识别出急性、慢性和恢复阶段。静态不对称与诱发性不对称相加，表现为方向优势或位置性眼震的方向固定或方向改变特征。动态不对称是指正常头部运动引起的异常不对称。例如，在单侧功能减退时，向未受影响侧的头部运动可观察到更大的增益，这表明符合埃斯瓦尔德第二定律所规定的非线性。视觉诱发性前庭不对称是一种由视觉-前庭信息汇聚产生的动态不对称形式，在某些“运动活跃”的视觉环境中会引发症状。
