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首页> 外文期刊>Journal of Neurophysiology >Relationship between vestibular sensitivity and multisensory temporal integration
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Relationship between vestibular sensitivity and multisensory temporal integration

机译：前庭敏感性与多思干时间集成的关系

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A single event can generate asynchronous sensory cues due to variable encoding, transmission, and processing delays. To be interpreted as being associated in time, these cues must occur within a limited time window, referred to as a "temporal binding window" (TBW). We investigated the hypothesis that vestibular deficits could disrupt temporal visual-vestibular integration by determining the relationships between vestibular threshold and TBW in participants with normal vestibular function and with vestibular hypofunction. Vestibular perceptual thresholds to yaw rotation were characterized and compared with the TBWs obtained from participants who judged whether a suprathreshold rotation occurred before or after a brief visual stimulus. Vestibular thresholds ranged from 0.7 to 16.5 deg/s and TBWs ranged from 13.8 to 395 ms. Among all participants, TBW and vestibular thresholds were well correlated (R-2 = 0.674, P 0.001), with vestibular-deficient patients having higher thresholds and wider TBWs. Participants reported that the rotation onset needed to lead the light flash by an average of 80 ms for the visual and vestibular cues to be perceived as occurring simultaneously. The wide TBWs in vestibular-deficient participants compared with normal functioning participants indicate that peripheral sensory loss can lead to abnormal multisensory integration. A reduced ability to temporally combine sensory cues appropriately may provide a novel explanation for some symptoms reported by patients with vestibular deficits. Even among normal functioning participants. a high correlation between TBW and vestibular thresholds was observed, suggesting that these perceptual measurements are sensitive to small differences in vestibular function.
机译：由于变量编码，传输和处理延迟，单个事件可以生成异步感觉线索。要被解释为及时相关联，这些提示必须在有限的时间窗口内发生，称为“时间绑定窗口”（TBW）。我们调查了前庭赤字的假设，可以通过确定前庭前庭功能和前庭缺血的参与者之间的前庭阈值和TBW之间的关系来破坏时间视觉前庭的一体化。与偏航旋转的前庭感知阈值表征并与从判断出在简要视觉刺激之前或之后发生的Suprathreshold旋转的参与者获得的TBW相比。前庭阈值范围为0.7至16.5°（505°），TBW等于13.8至395毫秒。在所有参与者中，TBW和前庭阈值均匀相关（R-2 = 0.674，P <0.001），前庭缺陷患者具有更高的阈值和更宽的TBW。参与者报告说，在同时发生的情况下，将光闪光引入光闪光的平均为80毫秒。与正常功能参与者相比，前庭缺乏参与者的宽TBW表明外围感觉损失可能导致异常的多思考集成。在适当地将感觉提示的能力降低，可以为前庭赤字的患者报告的一些症状提供新颖的解释。即使在正常运作的参与者中。观察到TBW和前庭阈值之间的高相关，表明这些感知测量对前庭功能的小差异敏感。

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