Proprioceptive recalibration arises slowly compared to reach adaptation
Proprioceptive recalibration arises slowly compared to reach adaptation
复制标题
与达到适应相比，本体感觉重新校准发生缓慢
DOI：
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发表时间：
2016
影响因子：
2
通讯作者：
E. K. Cressman
中科院分区：
文献类型：
--
作者：
Basel Zbib;D. Henriques;E. K. Cressman
当受试者在新的视觉环境中伸手时（例如，在观看表示从他们的手的实际位置旋转的他们的手的光标时），他们通常调整他们的移动（即，将光标带到目标），从而减少伸手误差。此外，研究已经表明，用改变的手的视觉反馈来达到导致感觉变化，使得手位置的本体感受估计在所经历的视觉反馈的方向上移位（Cressman和Henriques in J Neurophysiol 102：3505-3518，2009）。这项研究旨在确定这些感觉变化的时间过程。此外，内隐感觉和运动变化的时间进程进行了比较。受试者到达一个单一的视觉目标，同时看到一个光标与他们的手的位置对齐（50次试验）或相对于他们的手顺时针旋转30°（150次试验）。达到错误和本体感觉的手的位置估计进行了评估后，对齐的达到训练试验，并在七个不同的时间在旋转达到训练试验，通过有科目达到目标，没有视觉反馈，并提供估计他们的手相对于视觉参考标记，分别。结果显示，在整个旋转达到训练试验的本体感觉估计的转变，但是，显着的感觉变化，直到70试验后才观察到。相比之下，结果表明，在有限数量的延伸训练试验与旋转光标后，达到更大的变化。这些发现表明，本体感受重新校准比达到适应更慢。
When subjects reach in a novel visuomotor environment (e.g. while viewing a cursor representing their hand that is rotated from their hand’s actual position), they typically adjust their movements (i.e. bring the cursor to the target), thus reducing reaching errors. Additionally, research has shown that reaching with altered visual feedback of the hand results in sensory changes, such that proprioceptive estimates of hand position are shifted in the direction of the visual feedback experienced (Cressman and Henriques in J Neurophysiol 102:3505–3518, 2009). This study looked to establish the time course of these sensory changes. Additionally, the time courses of implicit sensory and motor changes were compared. Subjects reached to a single visual target while seeing a cursor that was either aligned with their hand position (50 trials) or rotated 30° clockwise relative to their hand (150 trials). Reach errors and proprioceptive estimates of felt hand position were assessed following the aligned reach training trials and at seven different times during the rotated reach training trials by having subjects reach to the target without visual feedback, and provide estimates of their hand relative to a visual reference marker, respectively. Results revealed a shift in proprioceptive estimates throughout the rotated reach training trials; however, significant sensory changes were not observed until after 70 trials. In contrast, results showed a greater change in reaches after a limited number of reach training trials with the rotated cursor. These findings suggest that proprioceptive recalibration arises more slowly than reach adaptation.
影响因子：
2.5
作者：
Tseng, Ya-weng;Diedrichsen, Jorn;Bastian, Amy J.
通讯作者：
Bastian, Amy J.
影响因子：
5.3
作者：
Diedrichsen, Joern;White, Olivier;Lally, Niall
通讯作者：
Lally, Niall
影响因子：
2.5
作者：
Wei, Kunlin;Koerding, Konrad
通讯作者：
Koerding, Konrad