Effects of visual information regarding allocentric processing in haptic parallelity matching

Mier, Hanneke I. Van

doi:10.1016/j.actpsy.2013.07.003

Cited by 12 publications

(72 citation statements)

References 36 publications

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“…These deviations have been observed in haptic parallelity tasks performed in different planes, like the (mid)horizontal plane (e.g. Kaas & Van Mier, 2006, Kappers, 1999Kappers & Koenderink, 1999;Newport, Rabb, & Jackson, 2002; Zuidhoek, Kappers, Van der Lubbe, & Postma, 2003;Van Mier, 2013), the frontoparallel plane (Hermens, Kappers, & Gielen, 2006;Volcic, Kappers, & Koenderink, 2007), the midsagittal plane (Kappers, 2002;2004), the threedimensional plane and for both unimanual and bimanual responses (Kappers & Koenderink, 1999;Kappers, 2002). A study by Fernández-Díaz and Travieso (2011) even found large and systematic deviations when the parallelity task was performed in rear peripersonal space (behind the back of the participant), with deviations clearly being influenced by the natural orientation of the hand.…”

Section: Introductionmentioning

confidence: 93%

“…It has been found that performance deviated more from veridicality when the horizontal distance between the hands was increased and when oblique orientations had to be matched compared to cardinal orientations (e.g. Kaas & Van Mier, 2006;Kappers, 1999Kappers, , 20022003;Van Mier, 2013). Additionally, the magnitude of the deviations has been found to be influenced by task instruction (Kaas & Van Mier, 2006;Van Mier, 2013).…”

Section: Factors Affecting Parallelity Matchingmentioning

confidence: 98%

“…This is indeed what has been observed when participants were instructed to position the test bar in such a way that the reference bar and the test bar formed each other's mirror image. In this so-called haptic mirror task, which was performed in the mid-horizontal plane, small and random deviations have been reported ( Kappers, 2004;2007;Van Mier, 2013). In contrast to the parallelity task in which large and systematic deviations have been found, in the mirror task deviations were small and random.…”

Section: Reference Framesmentioning

confidence: 98%

“…The deviations seem to be the result of a combined use of egocentric and allocentric reference frames (see figure 1). What is perceived as perceptually parallel is the weighted average of both frames, with the weight (i.e., how much both reference frames contribute), depending on the task and/or participant (Kappers, 2004;2007;Kappers & Viergever, 2006;Van Mier, 2013;Volcic et al, 2007;.…”

Section: Reference Framesmentioning

confidence: 99%

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Haptic Perception of Parallelity

Mier

2014

PBS

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Research has shown that the haptic perception of orientation is susceptible to systematic spatial bias. Large and systematic deviations have been found in haptic parallelity matching tasks supporting a reference frame based model. It has been suggested that the observed deviations result from the use of a frame of reference that is intermediate to an allocentric and an egocentric reference frame. The systemic bias of the deviations seems be caused by the strong bias produced by the hand-centered egocentric reference frame. In this paper results of studies are discussed showing a strong evidence for the abovementioned model in which egocentric representations exist in parallel to allocentric ones, and in which the former is biased by a hand-centered reference frame. The extent to which each representation is used appears to depend on factors like orientation, distance, gender, task instruction, practice and training. Manipulations stimulating allocentric processing or reducing egocentric processing have been shown to affect haptic parallelity performance.

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Section: Introductionmentioning

confidence: 93%

Section: Factors Affecting Parallelity Matchingmentioning

confidence: 98%

Section: Reference Framesmentioning

confidence: 98%

Section: Reference Framesmentioning

confidence: 99%

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Haptic Perception of Parallelity

Mier

2014

PBS

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“…This illusory rotation was predicted from results of a parallelity experiment: if participants have to make a test bar located to their right parallel to a reference bar located to their left, the test bar is always rotated clockwise with respect to the reference bar, e.g. [2][3][4][5][6] (see also Figure 1). Kappers showed that this rotation gradually and systematically increased with distance [7].…”

Section: Introductionmentioning

confidence: 99%

Illusory Rotations in the Haptic Perception of Moving Spheres and Planes

Kappers

Tiest

2014

Haptics: Neuroscience, Devices, Modeling, and Applications

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Abstract. Recently, we have shown that a translating bar on which blindfolded participants position their hand is perceived as also rotating. Here, we investigated whether such an illusory rotation would also be found if a sphere or a plane (i.e. a stimulus without a clear orientation) was used as translating stimulus. We indeed found similar rotation biases: on average a stimulus that translates over a distance of 60 cm has to rotate 25 • to be perceived as non-rotating. An additional research question was whether the biases were caused by the same underlying biasing egocentric reference frame. To our surprise, the correlations between the sizes of the biases of the individual participants in the various conditions were not high and mostly not even significant. This was possibly due to day-to-day variations, but clearly, more research is needed to answer this second research question.

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Reducing the motor response in haptic parallel matching eliminates the typically observed gender difference

Mier

2015

Exp Brain Res

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When making two bars haptically parallel to each other, large deviations have been observed, most likely caused by the bias of a hand-centered egocentric reference frame. A consistent finding is that women show significantly larger deviations than men when performing this task. It has been suggested that this difference might be due to the fact that women are more egocentrically oriented than men or are less efficient in overcoming the egocentric bias of the hand. If this is indeed the case, reducing the bias of the egocentric reference frame should eliminate the above-mentioned gender difference. This was investigated in the current study. Sixty participants (30 men, 30 women) were instructed to haptically match (task HP) the orientation of a test bar with the dominant hand to the orientation of a reference bar that was perceived with the non-dominant hand. In a haptic visual task (task HV), in which only the reference bar and exploring hand were out of view, no motor response was required, but participants had to “match” the perceived orientation by verbally naming the parallel orientation that was read out on a test protractor. Both females and males performed better in the HV task than in the HP task. Significant gender effects were only found in the haptic parallelity task (HP), corroborating the idea that women perform at the same level as men when the egocentric bias of the hand is reduced.

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Effects of visual information regarding allocentric processing in haptic parallelity matching

Cited by 12 publications

References 36 publications

Haptic Perception of Parallelity

Haptic Perception of Parallelity

Illusory Rotations in the Haptic Perception of Moving Spheres and Planes

Reducing the motor response in haptic parallel matching eliminates the typically observed gender difference

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