ONTOGONY ON MECHANISMS OF INFORMATION PROCESSING CONCERNING HEAVINESS PERCEPTION

在完全阻断所有视觉输入的情况下，本研究中的受试者仅使用指尖来研究人类触觉感知大小对重感感知的影响。用于测试的物体包括三组-铜（CP）、铝（AL）和塑料（PL）-分别重0.05、0.10、0.15、0.20、0.25、0.29、0.39、0.49、0.74和0.98 N的十个立方体。所有的立方体完全覆盖有光滑的乙烯基材料，以消除任何无关的输入有关的实际组成的个别立方体。战略性地放置的屏幕完全封闭了工作空间，以消除任何可能的视觉线索。每次比较都是在一对相同材料的立方体之间进行的- CP与CP、AL与AL以及PL与PL -以消除密度的影响。15例受试者（<M>__- = 19.2，<SD>_- = 0.68岁）在每次实验中，他们都试图判断第一个和第二个立方体之间的重量差异，这些立方体是由实验者交给他们的， ...更多信息 在拇指和食指之间摩擦。对于每种材料，向每名受试者伪随机提供了共计340项试验，其中包括70种重量组合，包括160项上升试验（较重）、160项下降试验（较轻）和20项相同重量试验。所有材料的重量差异和试验次数的组合相同，因此支撑襻尺寸被视为单个独立因素。在三种材料之间比较了受试者对放置一对相同组合的立方体所产生的相同重量差异的反应的准确性。据观察，具有较小尺寸效应的材料如CP比具有更显著尺寸效应的PL促进显著更准确的相同重量差异的区分。这表明，当比较密度相等的物体时，指尖触觉感知大小的微小变化会直接影响重量感知;尽管在本研究所建立的条件下不存在这种情况，但这一发现可以被认为类似于比较密度不等的物体时的大小重量错觉（Charpentier 1891）。这项研究的结果还表明，人类沿着存在一种处理机制，该机制整合了重量和触觉大小的因素，其中重量随着重量增加或尺寸减小而增加，反之亦然。

With all visual input totally blocked, subjects in this study utilized fingertips only to investigate the involvement of Haptically Perceived Size in Heaviness Perception among humans. The objects used for testing consisted of three sets - copper (CP), aluminum (AL), and plastic (PL) - of ten cubes weighing 0.05, 0.10, 0.15, 0.20, 0.25, 0.29, 0.39, 0.49, 0.74, and 0.98 N respectively. All of the cubes were completely covered with a smooth vinyl material to eliminate any extraneous input concerning the actual composition of the individual cubes. Strategically placed screens totally enclosed the working space to eliminate any possible visual cues. Each comparison was between a pair of cubes of the same material - CP vs. CP, AL vs. AL, and PL vs. PL - to eliminate the effect of Density. Fifteen subjects (<M>__- = 19.2, <SD>___- = 0.68 yr.) attempted to judge differences in heaviness between the first and second cube in each trial that had been handed to them by the experimenter and were g … More rasped between the thumb and the index finger. A total of 340 trials with 70 combinations of Weight composed of 160 Ascending Trials (heavier), 160 Descending Trials (lighter), and 20 Identical Weight Trials were pseudo-randomly presented to each subject for each material. Combinations of difference in Weight and the number of trials were identical for all materials so that Haptic Size was regarded as the single independent factor. Accuracy of the subjects' responses for Identical Weight Differences that resulted from placing a pair of cubes of the same combination was compared among the three materials. It was observed that a material like CP that had a lesser Size Effect facilitated significantly more accurate discrimination of the Identical Weight Differences than PL with its more significant Size Effect. This suggests that small changes in Haptically Perceived Size by the fingertips have a direct influence on Heaviness Perception when comparing objects of equal Density ; although it did not exist in the conditions established for this study, this finding can be considered analogous to the Size-Weight Illusion when comparing objects of unequal Density (Charpentier 1891). The findings of this study also suggest the constant involvement of Haptic Size in Heaviness Perception by humans along with the existence of a processing mechanism that integrates the factors of Weight and Haptic Size in which heaviness increases either as Weight increases or as Size decreases, and vice versa Less