Iavorskiĭ A B, Nemkova S A, Kobrin V I, Sologubov E G, Sinel'nikova A N
Nursery Psychoneurological Hospital No. 18, Russian State Medical University.
Zh Vyssh Nerv Deiat Im I P Pavlova. 1998 Nov-Dec;48(6):936-44.
Individual profiles of brain interhemispheric asymmetry (IPA) and stability in maintenance of the vertical posture have been studied in healthy children and adults and patients with the spastic form of the infantile cerebral palsy before and after visual stimulation. The IPA were built on the basis of motor asymmetry of hands, asymmetry of visual half-fields, and asymmetry of muscle extension tone in vertical position in Romberg test at computer stabilograph. The visual stimulation was realized by unilateral tachistoscopic administration of a verbal stimulus in the visual half-field on the side of worst detection of the master stimulus during the procedure of initial IPA construction. The IPA were different in children, adults, and patients. Even single visual stimulation changed the initial IPA (not only its visual but motor and stability-related components). A correlation was shown between the individual features of realization of the vertical position, initial IPA, age of the subjects, and presence/absence of the cerebral palsy. The visual stimulation led to a decrease in initially low stability and, on the contrary, an increase in initially high stability both in healthy subjects and patients with cerebral palsy, regardless of their handedness. Increase in stability of the vertical posture was accompanied by a decrease in the role of the visual analyzer, and, on the contrary, decrease in stability was associated with an increase in the role of the visual analyzer in stability control. It is necessary to take into account the dissimilar action of sensory stimulation on the IPA and stability of the vertical posture in assessment of the effects of sensory stimulation on healthy persons and patients with CNS lesions, in particular, with cerebral palsy, in the course of development of new ways of treatment.
在健康儿童、成人以及痉挛型小儿脑性瘫痪患者中，研究了大脑半球间不对称性（IPA）的个体特征以及维持垂直姿势的稳定性，观察了视觉刺激前后的变化。IPA是基于双手运动不对称性、视觉半视野不对称性以及在计算机稳定仪上进行罗姆伯格试验时垂直位肌肉伸展张力的不对称性构建的。视觉刺激是通过在最初构建IPA的过程中，在视觉半视野中单侧快速呈现言语刺激来实现的，该半视野是主刺激检测最差的一侧。儿童、成人和患者的IPA各不相同。即使单次视觉刺激也会改变初始IPA（不仅是其视觉成分，还有运动和稳定性相关成分）。研究表明，垂直姿势实现的个体特征、初始IPA、受试者年龄以及是否患有脑性瘫痪之间存在相关性。视觉刺激导致健康受试者和脑性瘫痪患者中，最初稳定性低的情况有所降低，相反，最初稳定性高的情况有所增加，且与利手无关。垂直姿势稳定性的增加伴随着视觉分析器作用的降低，相反，稳定性的降低与视觉分析器在稳定性控制中作用的增加相关。在开发新的治疗方法过程中，评估感觉刺激对健康人和中枢神经系统病变患者（特别是脑性瘫痪患者）的影响时，有必要考虑感觉刺激对IPA和垂直姿势稳定性的不同作用。
