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Processing of proprioceptive and vestibular body signals and self-transcendence in Ashtanga yoga practitioners

机译:Ashtanga瑜伽练习者对本体感受和前庭身体信号的处理以及自我超越

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摘要

In the rod and frame test (RFT), participants are asked to set a tilted visual linear marker (i.e. a rod), embedded in a square, to the subjective vertical, irrespective of the surrounding frame. People not influenced by the frame tilt are defined as field-independent, while people biased in their rod verticality perception are field-dependent. Performing RFT requires the integration of proprioceptive, vestibular and visual signals with the latter accounting for field-dependency. Studies indicate that motor experts in body-related, balance-improving disciplines tend to be field-independent, i.e. better at verticality perception, suggesting that proprioceptive and vestibular expertise acquired by such exercise may weaken the influence of irrelevant visual signals. What remains unknown is whether the effect of body-related expertise in weighting perceptual information might also be mediated by personality traits, in particular those indexing self-focusing abilities. To explore this issue, we tested field-dependency in a class of body experts, namely yoga practitioners and in non-expert participants. Moreover we explored any link between performance on RFT and self-transcendence, a complex personality construct, which refers to tendency to experience spiritual feelings and ideas. As expected, yoga practitioners (i) were more accurate in assessing the rod’s verticality on the RFT, and (ii) expressed significantly higher self-transcendence. Interestingly, the performance in these two tests was negatively correlated. More specifically, when asked to provide verticality judgments, highly self-transcendent yoga practitioners were significantly less influenced by a misleading visual context. Our results suggest that being highly self-transcendent may enable yoga practitioners to optimize verticality judgment tasks by relying more on internal (vestibular and proprioceptive) signals coming from their own body, rather than on exteroceptive, visual cues.
机译:在杆和框测试(RFT)中,要求参与者将嵌入正方形的倾斜视觉线性标记(即杆)设置为主观垂直线,而不考虑周围的框架。不受框架倾斜影响的人被定义为与场无关,而在杆垂直度感知上有偏见的人则与场有关。进行RFT时需要将本体感受,前庭和视觉信号集成在一起,后者考虑了场依赖性。研究表明,与身体相关的,改善平衡能力的学科的运动专家倾向于独立于领域,即在垂直感方面更好,这表明通过这种锻炼获得的本体感受和前庭专业知识可能会减弱无关的视觉信号的影响。尚不清楚的是,与身体相关的专业知识在加权感知信息上的作用是否也可能由人格特质,尤其是那些索引自我聚焦能力的人格特质所介导。为了探讨这个问题,我们在一类身体专家(即瑜伽练习者和非专业参与者)中测试了场依存性。此外,我们探索了RFT的表现与自我超越之间的任何联系,自我超越是一种复杂的人格结构,指的是体验精神感受和思想的倾向。正如预期的那样,瑜伽练习者(i)在评估杆在RFT上的垂直度方面更准确,并且(ii)表现出更高的自我超越能力。有趣的是,这两个测试的性能呈负相关。更具体地说,当被要求提供垂直度判断时,高度自我超越的瑜伽练习者受到误导性视觉环境的影响明显较小。我们的研究结果表明,高度自我超越可以使瑜伽练习者通过更多地依赖于来自自身身体的内部(前庭和本体感受)信号,而不是外部感知的视觉提示来优化垂直度判断任务。

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