Decoding of spatial proportions using somatosensory feedback in sighted and visually impaired children

IF 3.4 Q2 NEUROSCIENCES

Trends in Neuroscience and Education Pub Date : 2023-09-01 DOI:10.1016/j.tine.2023.100207

Christian Leukel , Timo Leuders , Juliane Leuders

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Abstract

Background and purpose

Humans can naturally operate with ratios of continuous magnitudes (proportions). We asked if sighted children (S) and visually impaired children (VI) can discriminate proportions via somatosensory feedback.

Procedures

Children formed a proportion by tracing a pair of straight lines with their finger, and compared this proportion with a second proportion resulting from the tracing of another pair of lines.

Main findings

Performance was 68% in S, thus significantly lower (p < 0.001) compared to VI (75%). Tracing velocity (p < 0.01) and trial-to-trial variability of tracing velocity (p < 0.05) was higher in S compared to VI.

Conclusions

Operating with proportions solely from somatosensory feedback is possible, thus tracing lines might support learning in mathematics education. Kinematic variables point to the reason for the difference between S and VI, in that higher trial-to-trial variability in velocity in S leads to biased estimation of absolute line lengths.

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利用体感反馈解码视力和视障儿童的空间比例

背景和目的人类可以自然地以连续大小（比例）的比率进行操作。我们询问有视力的儿童（S）和视障儿童（VI）是否可以通过体感反馈来区分比例。程序孩子们用手指画一对直线形成一个比例，并将这个比例与画另一对直线产生的第二个比例进行比较。主要发现S组的表现为68%，因此与VI组（75%）相比显著降低（p＜0.001）。与VI相比，S组的追踪速度（p＜0.01）和追踪速度的试验间变异性（p＜0.05）更高。结论仅根据体感反馈进行比例操作是可能的，因此追踪线可能有助于数学教育中的学习。运动学变量指出了S和VI之间差异的原因，因为S中速度的试验间变化较大，导致对绝对线长度的估计存在偏差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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