Fagot J, Lacreuse A, Vauclair J
Cognitive Neuroscience Laboratory, Marseille, France.
Brain Cogn. 1993 Mar;21(2):212-25. doi: 10.1006/brcg.1993.1017.
Studies on haptic processing show inconsistent results concerning sex and hand differences. We present a novel approach in which manual exploratory strategies were examined. Twenty-four right-handed adults of both sexes had to monohaptically explore unseen meaningless stimuli and then to recognize their visually presented outline drawings among drawings of different stimuli. Tactual stimuli were composed of eight smoothly joined cubes whose junctions were not haptically discernible. The computer recorded number and duration of hand contacts on each cube. Analyses included the accuracy of the recognition phase, the number and duration of exhaustive explorations of the stimulus, and the number of cubes simultaneously touched. Neither hand nor sex differences were found for the accuracy measurement. The number and duration of exhaustive explorations also provide no evidence of hand differences. However, the left hand touched simultaneously more cubes than the right and this asymmetry was more pronounced in males than in females. Such an asymmetry was apparent in the very first contact of the hand with the shape. It is suggested that exploratory strategies may be more sensitive measures in revealing hand lateralization than the accuracy measurement.
关于触觉加工的研究在性别和手部差异方面呈现出不一致的结果。我们提出了一种新方法，其中对手动探索策略进行了研究。24名右利手的成年男女必须通过单触觉方式探索看不见的无意义刺激，然后在不同刺激的绘图中识别其视觉呈现的轮廓图。触觉刺激由八个平滑连接的立方体组成，其连接处无法通过触觉辨别。计算机记录了每块立方体上手接触的次数和持续时间。分析包括识别阶段的准确性、对刺激进行详尽探索的次数和持续时间，以及同时触摸的立方体数量。在准确性测量方面，未发现手部或性别差异。详尽探索的次数和持续时间也未提供手部差异的证据。然而，左手同时触摸的立方体比右手多，且这种不对称在男性中比在女性中更明显。这种不对称在手部与形状的首次接触时就很明显。有人提出，与准确性测量相比，探索策略可能是揭示手部偏侧化更敏感的指标。
