Role of somatosensory and/or vestibular sensory information in subjective postural vertical in healthy adults
Role of somatosensory and/or vestibular sensory information in subjective postural vertical in healthy adults
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DOI：
10.1016/j.neulet.2019.134598
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发表时间：
2020-01-01
影响因子：
2.5
通讯作者：
Shomoto, Koji
中科院分区：
文献类型：
--
作者：
Nakamura, Junji;Shiozaki, Tomoyuki;Shomoto, Koji
身体的主观垂直姿势（SPV）一直被认为是受体感信息的影响。SPV是如何基于什么类型的体感信息被感知的，还没有通过操纵体感条件的实验来确定。我们研究了干扰座椅垫体感信息和/或前庭感觉信息对15名健康成人SPV的影响。在对照、体感、前庭、体感+前庭4种情况下，随机测量SPV值。测量了平均和绝对SPV值。体感条件下，在座椅表面放置泡沫橡胶垫，测量受试者的SPV。在前庭状态下，在前庭电刺激（GVS）时测量SPV。采用体感+前庭条件测量体感和前庭联合刺激时的SPV。体感+前庭状态的平均SPV值明显高于其他三种状态。体感组和体感+前庭组SPV绝对值明显高于对照组和前庭组。与其他情况相比，前庭条件下的平均或绝对SPV值无显著差异。体感信息受干扰与体感+前庭信息受干扰时SPV误差无显著差异。当来自座椅的体感信息受到干扰时，SPV误差增大，并在前庭感觉信息调制的影响下发生偏移。这些结果表明，来自座椅的体感信息在健康成人的SPV中起着重要作用。
The body's subjective postural vertical (SPV) has been thought to be affected by somatosensory information. How the SPV is perceived based on what types of somatosensory information has not been determined experimentally by manipulating somatosensory conditions. We investigated the effects of disturbing the somatosensory information from a seat pad and/or vestibular sensory information on the SPV in 15 healthy adults. Their SPV values were measured under four conditions (control, somatosensory, vestibular, and somatosensory + vestibular) in random order. The average and absolute SPV values were measured. In the somatosensory condition, a foam rubber pad was placed on the seating surface and the subject's SPV was measured. In the vestibular condition, the SPV was measured during galvanic vestibular stimulation (GVS). The somatosensory + vestibular condition was used to measure the SPV during combined somatosensory and vestibular stimulation. The mean SPV value was significantly increased in the somatosensory + vestibular condition compared to the other three conditions. The absolute value of SPV was significantly increased in the somatosensory and somatosensory + vestibular conditions compared to the control and vestibular conditions. There was no significant difference in the average or absolute SPV values in the vestibular condition compared to the other conditions. There was no significant difference between SPV errors when somatosensory information was disturbed or when somatosensory + vestibular information was disturbed. When the somatosensory information from the seat was disturbed, the SPV error increased, and it also shifted under the influence of the vestibular sensory information modulation. These results indicate that somatosensory information from the seat plays an important role in SPV in healthy adults.