School of Sport, Health and Exercise Sciences, Institute for the Psychology of Elite Performance, Bangor University, George Building, Holyhead Rd, Gwynedd, Bangor, LL57 2PX, UK.
Psychol Res. 2013 Jul;77(4):422-33. doi: 10.1007/s00426-012-0440-1. Epub 2012 May 24.
In target-directed aiming, afferent information is used to adjust limb trajectories during movement execution (i.e. online) and to enhance the programming of subsequent trials (i.e. offline). The objective of the present study was to determine the influence of state anxiety on both online and offline afferent information processing for the first time. Participants practiced either a directional aiming task (Experiment 1) or an amplitude aiming task (Experiment 2) without anxiety before being transferred to a high anxiety condition. In both experiments, results revealed that anxiety resulted in a decrement in performance. Furthermore, use of afferent information to adjust movement trajectories online was disrupted when movements were performed with anxiety, whereas there were no differences in the offline processing of afferent information between the low anxiety and high anxiety conditions.
在目标导向瞄准中，传入信息用于在运动执行期间（即在线）调整肢体轨迹，并增强后续试验的编程（即离线）。本研究的目的是首次确定状态焦虑对在线和离线传入信息处理的影响。参与者在转移到高焦虑状态之前，先进行定向瞄准任务（实验 1）或幅度瞄准任务（实验 2），不伴有焦虑。在两个实验中，结果都表明焦虑会导致表现下降。此外，当运动伴随着焦虑时，传入信息用于在线调整运动轨迹的使用受到干扰，而在线和离线传入信息处理之间在低焦虑和高焦虑条件下没有差异。
