Haptic Perception of Parallelity

Mier, Hanneke I. Van

doi:10.11648/j.pbs.20140306.16

Cited by 10 publications

(18 citation statements)

References 54 publications

(137 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the use of an allocentric reference frame would result in bars that would be perfectly parallel, the use of an egocentric reference frame would result in large differences between the orientations of both bars. The observed deviations are usually intermediate between allocentrically and egocentrically parallel and as such support a reference based model for haptic parallel matching (Van Mier 2014 ).…”

Section: Introductionsupporting

confidence: 73%

“…When the hands are positioned farther away from each other in the horizontal direction, the orientation of the hands is different. This suggests that the deviations in haptic parallelity matching are most likely the result of an egocentric reference frame that is biased by the hand (Kappers 2002 , 2003 ; Van Mier 2014 ). Several authors have reported results that support a hand-centered egocentric reference frame in haptic parallelity tasks (Kappers and Liefers 2012 ; Kappers and Viergever 2006 ; Van Mier 2013 ; Volcic and Kappers 2008 ).…”

Section: Introductionmentioning

confidence: 99%

“…Research has shown that the size of the deviations is participant-dependent, with a large variation between participants (e.g., Kappers 2003 , 2004 ; Van Mier 2014 ; Volcic et al 2008 ; Zuidhoek et al 2003 ). Regardless of this large inter-individual variation, a persistent finding has been that males outperform females on haptic parallel matching tasks (Hermens et al 2006 ; Kaas and Van Mier 2006 ; Kappers 2003 , 2007 ; Van Mier 2013 ; Volcic et al 2008 ; Zuidhoek et al 2007 ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Mier

2015

Exp Brain Res

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionsupporting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Mier

2015

Exp Brain Res

View full text Add to dashboard Cite

show abstract

“…Research on haptic perception of orientations [5,15] includes investigations on the oblique effect [4,6,7,8] and on parallelism [10,11,13,16]. The oblique effect describes that vertical or horizontal orientations are better processed by humans than oblique orientations, such as 45 or 135 degrees.…”

Section: Introductionmentioning

confidence: 99%

“…Considering that humans perform better with horizontal or vertical orientations (oblique effect), we choose 90 degrees as target angle. Research about parallelism indicates that the perception of orientations is strongly biased by the hand-centered egocentric reference frame [15]. Hand orientations are insufficiently compensated and, therefore, influence the perceived orientation [13].…”

Section: Introductionmentioning

confidence: 99%

Influence of Shape Elements on Performance During Haptic Rotation

Krieger

Moringen

Kappers³

et al. 2018

Haptics: Science, Technology, and Applications

View full text Add to dashboard Cite

Abstract. In this work, we investigate how local shape elements of a grasped object affect performance of haptic rotation. Blindfolded participants were asked to grasp a rotary knob using thumb and index finger and to rotate it 90 degrees counterclockwise around its own axis. The knobs exhibited a suitably distributed "grasp conform" combination of local shape elements (edged, flat or round). We tested all possible scenarios where both fingers had to grasp one of the three shape elements, resulting in a total of nine experimental conditions. Based on the rotation angle, determined with a novel apparatus named Twister, we evaluated the variable and signed errors. The results imply that a round rotary knob is the hardest to rotate by a correct goal angle, while other local shape elements can benefit the performance. Independent of the experimental condition, we found a bias towards rotating too far.

show abstract

Changing the influence of the egocentric reference frame impacts deviations in haptic parallelity matching

Mier

2019

Exp Brain Res

View full text Add to dashboard Cite

The large systematic deviations in haptic parallelity matching are most likely due to the biasing influence of the hand-centered egocentric reference frame. Previous results showed that eliminating or reducing this bias resulted in smaller deviations, with significantly larger effects observed in female participants. The current study investigated the effect of reducing the egocentric bias in a pure haptic condition. Blind-folded male and female participants had to feel the orientation of a reference bar with their non-dominant hand and to parallel this orientation on a test bar with their dominant hand. In one condition, they were instructed to use their flat-stretched hand to feel and match the bars, while in the other condition (HPF), they were instructed to set the test bar while gripping the bar with the fingers and thumb. It was hypothesized that the latter would reduce the biasing influence of the hand-centered egocentric reference frame. Results showed that this was indeed the case. Deviations were significantly smaller for HPF; however, this effect was the same in both genders. The previously observed gender effect, showing a significantly larger improvement for women when reducing the influence of the egocentric reference frame, was not replicated.

show abstract

Haptic Perception of Parallelity

Cited by 10 publications

References 54 publications

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

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

Influence of Shape Elements on Performance During Haptic Rotation

Changing the influence of the egocentric reference frame impacts deviations in haptic parallelity matching

Contact Info

Product

Resources

About