Hand path priming in manual obstacle avoidance: Evidence that the dorsal stream does not only control visually guided actions in real time
Hand path priming in manual obstacle avoidance: Evidence that the dorsal stream does not only control visually guided actions in real time
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DOI：
10.1037/0096-1523.33.2.425
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发表时间：
2007-04-01
影响因子：
2.1
通讯作者：
Rosenbaum, David A.
中科院分区：
文献类型：
--
作者：
Jax, Steven A.;Rosenbaum, David A.
根据人类知觉和表现的一个重要理论(M.A.Goodale和A.D.Milner，1992)，背部的动作相关流只控制实时的视觉引导动作。据预测，这样的系统将很少或根本不会从以前的经验中显示出行动启动。这里报道的三个实验旨在确定是否存在启动，以视觉引导手指向有时有障碍物的目标。在所有三个实验中，手部路径的曲率都观察到了启动。当没有障碍物时，如果最近出现障碍物，手道比最近没有出现障碍物时更弯曲。结果还表明，手部路径启动不是主动预测的结果，它在许多实验中持续存在，并在工作空间中推广。启动移动的时间也反映了复杂的视觉搜索策略的使用，该策略考虑了障碍的可能性。
According to a prominent theory of human perception and performance (M. A. Goodale & A. D. Milner, 1992), the dorsal, action-related stream only controls visually guided actions in real time. Such a system would be predicted to show little or no action priming from previous experience. The 3 experiments reported here were designed to determine whether priming exists for visually guiding the hand to targets with obstacles sometimes in the way. In all 3 experiments, priming was observed in the curvature of hand paths. Hand paths when no obstacles were present were more curved if obstacles had recently appeared than if obstacles had not recently appeared. The results also show that hand path priming was not the result of active prediction, persisted for many trials, and generalized over the workspace. The times to initiate movements also reflected the use of a sophisticated visual search strategy that took obstacle likelihood into account.