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首页> 外文期刊>Laterality >Touching base: The effect of participant and stimulus modulation factors on a haptic line bisection task
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Touching base: The effect of participant and stimulus modulation factors on a haptic line bisection task

机译：接触基础：参与者和刺激调制因子对触觉线平分任务的影响

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Acquiring information about our environment through touch is vital in everyday life. Yet very little literature exists about factors that may influence haptic or tactile processing. Recent neuroimaging studies have reported haptic laterality effects that parallel those reported in the visual literature. With the use of a haptic variant of the classical line bisection task, the present study aimed to determine the presence of laterality effects on a behavioural level. Specifically, three handedness groups including strong dextrals, strong sinistrals, and-the to-date largely neglected group of-mixed-handers were examined in their ability to accurately bisect stimuli constructed from corrugated board strips of various lengths. Stimulus factors known to play a role in visuospatial perception including stimulus location, the hand used for bisection, and direction of exploration were systematically varied through pseudo-randomisation. Similar to the visual domain, stimulus location and length as well as participants' handedness and the hand used for bisection exerted a significant influence on participants' estimate of the centre of haptically explored stimuli. However, these effects differed qualitatively from those described for the visual domain, and the factor direction of exploration did not exert any significant effect. This indicates that laterality effects reported on a neural level are sufficiently pronounced to result in measurable behavioural effects. The results, first, add to laterality effects reported for the visual and auditory domain, second, are in line with supramodal spatial processing and third, provide additional evidence to a conceptualisation of pseudoneglect and neglect as signs of hemispheric attentional asymmetries.
机译：通过触摸获取有关我们环境的信息在日常生活中至关重要。然而，关于影响触觉或触觉过程的因素的文献很少。最近的神经影像学研究已经报告了触觉侧向效应，其与视觉文献中报道的平行。通过使用经典线平分任务的触觉变体，本研究旨在确定在行为水平上是否存在侧向效应。具体而言，检查了包括强力右旋肌，强左鼻窦和迄今为止被广泛忽视的混合手组的三个惯用组，它们准确地将由各种长度的瓦楞纸板条构成的刺激一分为二。已知在视觉空间感知中起作用的刺激因素包括刺激位置，用于二等分的手和探索方向通过伪随机系统地变化。与视觉域相似，刺激的位置和长度以及参与者的惯用手和用于平分的手对参与者对触觉探索刺激中心的估计产生了重大影响。但是，这些影响在质量上与在视觉域中描述的不同，并且探索的因素方向没有发挥任何显着的影响。这表明在神经水平上报道的偏侧效应足够明显，可以导致可测量的行为效应。首先，结果增加了视觉和听觉方面的偏侧效应，其次，与超模态空间处理相符，其次，为假性忽略和半球注意不对称现象的概念化提供了额外的证据。

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