The ability of humans to perceive and differentiate kinesthetic sensory information significantly influences our daily activities and motor control. This study examines the impact of asynchronous bi-manual discrimination tasks compared to uni-manual discrimination tasks on kinesthetic perception. Our study aims to reveal the relationship between kinesthetic perception of haptic signals by examining perceptual thresholds in three different scenarios using (i) the dominant hand, (ii) the non-dominant hand, and (iii) both hands simultaneously to differentiate between two successive signals. Subjects exposed to force signals in these three situations conveyed their perceptions of alterations in signal magnitude after each trial. Subsequently, we applied psychometric functions to the collected responses to determine perceptual thresholds. Our results indicate a substantial difference in threshold values between bi-manual and uni-manual scenarios, with the bi-manual scenario exhibiting higher thresholds, indicating inferior perceptual ability when both hands are simultaneously utilized in two separate discrimination tasks. Furthermore, our investigation reveals distinct perception thresholds between the dominant and non-dominant hands, owing to differences in the perceptual capability of the two hands. These findings provide substantial insight into how the nature of tasks may alter kinesthetic perception, offering implications for the development of haptic interfaces in practical applications.

中文翻译：

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双手感官辨别：动觉研究

人类感知和区分动觉感觉信息的能力显着影响我们的日常活动和运动控制。本研究探讨了异步双手辨别任务与单手辨别任务对动觉知觉的影响。我们的研究旨在通过检查三种不同场景中的感知阈值来揭示触觉信号的动觉感知之间的关系，使用（i）惯用手，（ii）非惯用手，和（iii）双手同时区分两个连续的手信号。在这三种情况下暴露于力信号的受试者在每次试验后表达了他们对信号强度变化的感知。随后，我们将心理测量函数应用于收集的反应以确定感知阈值。我们的结果表明，双手和单手场景之间的阈值存在显着差异，双手场景表现出较高的阈值，表明当双手同时用于两个单独的辨别任务时感知能力较差。此外，我们的研究揭示了由于两只手的感知能力的差异，主导手和非主导手之间存在明显的感知阈值。这些发现为任务的性质如何改变动觉知觉提供了深入的见解，为实际应用中触觉界面的开发提供了启示。