耳石功能不对称假说,是解释航天运动病发生机理的一种假说。这种理论认为,人体两侧前庭功能不一致,特别是两侧耳石重量不等,使两侧耳石输入神经中枢的信息不对称。人类长期生活于地球引力下,这种两侧不对称信息经过神经中枢整合成固定的信息模式,产生适应,不会发生异常的前庭反应。然而,人一旦进入失重状态,其两侧耳石重量均消失,反而使神经中枢不能适应,产生航天运动 The otolith asymmetry hypothesis is a hypothesis explaining the mechanism of the occurrence of space motion disease. This theory suggests that the vestibular function on both sides of the body is inconsistent, especially on both sides of the weight of otolith, so that both sides of the otolith into the neural center of asymmetric information. Long-term human life in the Earth’s gravity, asymmetric information on both sides of the central nervous system through the integration into a fixed information model, to adapt to, will not occur abnormal vestibular response. However, once the person enters the state of weightlessness, the weight of the otolith disappears on both sides, but the nerve center can not adapt to produce aerospace exercise