Stephen Damian G, Hajnal Alen
Wyss Institute for Biologically Inspired Engineering, Harvard University, 3 Blackfan Circle, Floor 5, Boston, MA 02115, USA.
Atten Percept Psychophys. 2011 Jul;73(5):1302-28. doi: 10.3758/s13414-011-0142-6.
Transfer of competency in a perceptual task often depends on shared information between anatomically different perceptual subsystems. The problem of studying transfer involves isolating conditions of similarity and then trying to account for any resulting differences in transfer. To respect this twofold aspect, this article takes a two-pronged approach to transfer in dynamic touch. The present research first tests the hypothesis that functional equivalence supports the transfer of dynamic touch. Participants were trained to wield unseen objects with the hand or foot and were then tested on anatomically disparate limbs (i.e., the foot or hand, respectively). Next, we examined motion capture of these wielding behaviors for predictors of any asymmetry in transfer. Temporally fractal fluctuations of exploratory behavior can modulate information detection, and we tested whether the fractality of wielding might predict asymmetries in transfer across disparate limbs. Results suggest that transfer of training to anatomically disparate limbs respects functional conditions of similarity and also that the degree of temporally fractal fluctuations predicted limb differences in transfer.
在一项感知任务中能力的迁移通常取决于解剖结构不同的感知子系统之间共享的信息。研究迁移问题涉及分离相似性条件，然后试图解释迁移中产生的任何差异。为了兼顾这两个方面，本文采用双管齐下的方法来研究动态触觉中的迁移。本研究首先检验功能等效性支持动态触觉迁移这一假设。参与者接受训练，用手或脚操纵看不见的物体，然后在解剖结构不同的肢体上进行测试（即分别用脚或手）。接下来，我们检查了这些操纵行为的动作捕捉，以寻找迁移中任何不对称性的预测因素。探索行为的时间分形波动可以调节信息检测，我们测试了操纵的分形性是否可以预测不同肢体间迁移的不对称性。结果表明，训练向解剖结构不同的肢体的迁移符合相似性的功能条件，并且时间分形波动的程度预测了迁移中肢体的差异。
