Factors affecting the haptic filled-space illusion for dynamic touch

Sanders, Abram F. J.; Kappers, Astrid M. L.

doi:10.1007/s00221-008-1635-y

Cited by 7 publications

(15 citation statements)

References 25 publications

(28 reference statements)

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“…Dynamic touch was defined by Gibson (1966) as the perception that results from the combination of cutaneous, muscular and joints cues. In such conditions, the stimuli are moved through the participant's skin, allowing the perception of movement cues not present in passive touch, but not requiring the voluntary exploration present in active touch (e.g., Turvey 1996;Sanders and Kappers 2008). Experimentally, dynamic touch is a condition that allows higher experimental control than active touch, since participants are not allowed to move their hands, minimising variations in exploration.…”

Section: Passive and Active Touchmentioning

confidence: 99%

Tactual perception: a review of experimental variables and procedures

Fernandes

Albuquerque

2012

Cogn Process

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This paper reviews the literature on tactual perception. Throughout this review, we will highlight some of the most relevant aspects in the touch literature: type of stimuli; type of participants; type of tactile exploration; and finally, the interaction between touch and other senses. Regarding type of stimuli, we will analyse studies with abstract stimuli such as vibrations, with two- and three-dimensional stimuli, and also concrete stimuli, considering the relation between familiar and unfamiliar stimuli and the haptic perception of faces. Under the "type of participants" topic, we separated studies with blind participants, studies with children and adults, and also performed an overview of sex differences in performance. The type of tactile exploration is explored considering conditions of active and passive touch, the relevance of movement in touch and the relation between haptic exploration and time. Finally, interactions between touch and vision, touch and smell and touch and taste are explored in the last topic. The review ends with an overall conclusion on the state of the art for the tactual perception literature. With this work, we intend to present an organised overview of the main variables in touch experiments, compiling aspects reported in the tactual literature, and attempting to provide both a summary of previous findings, and a guide to the design of future works on tactual perception and memory, through a presentation of implications from previous studies.

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Section: Passive and Active Touchmentioning

confidence: 99%

Tactual perception: a review of experimental variables and procedures

Fernandes

Albuquerque

2012

Cogn Process

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“…Historically, the role of haptics in the action-perception system has been examined relative to individuals' acquisition of information during their performance of exploratory motor actions (Sanders & Kappers, 2009;Solomon & Turvey, 1988). Some researchers have specifically investigated the haptic system's functional role on postural control (Riley, Stoffregen, Grocki & Turvey, 1999;Carello, Silva, Kinsella-Shaw & Turvey, 2008;Holden, Ventura & Lackner, 1994).…”

Section: Short-term Effects Of the Use Of Non-rigid Tools For Posturamentioning

confidence: 99%

Short-Term Effects of the Use of Non-Rigid Tools for Postural Control by Adults with Intellectual Disabilities

Mauerberg-deCastro¹,

Moraes²,

Campbell³

2012

Motor Control

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We tested the short-term effects of a nonrigid tool, identified as an "anchor system" (e.g., ropes attached to varying weights resting on the floor), on the postural stabilization of blindfolded adults with and without intellectual disabilities (ID). Participants held a pair of anchors-one in each hand, under three weight conditions (250 g, 500 g and 1,000 g), while they performed a restricted balance task (standing for 30 s on a balance beam placed on top of a force platform). These conditions were called anchor practice trials. Before and after the practice trials, a condition without anchors was tested. Control practice groups, who practiced blocks of trials without anchors, included individuals with and without ID. The anchor system improved subjects' balance during the standing task, for both groups. For the control groups, the performance of successive trials in the condition without the anchor system showed no improvement in postural stability. The individuals with intellectual disability, as well as their peers without ID, used the haptic cues of nonrigid tools (i.e., the anchor system) to stabilize their posture, and the short-term stabilizing effects appeared to result from their previous use of the anchor system.

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“…What is now referred to as the Oppel-Kundt illusion has also been found in dynamic touch for a haptically filled space (Sanders & Kappers, 2009) and in threedimensional (3-D) space (Deregowski & McGeorge, 2006). Recently it has been established that distortions of space induced by Oppel-Kundt stimuli are not a consequence of a motor response bias but a perceptual illusion of length (Pia et al, 2012).…”

Section: Introductionmentioning

confidence: 96%

Crossing the line: Estimations of line length in the Oppel-Kundt illusion

Mikellidou

Thompson

2014

Journal of Vision

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In the Oppel-Kundt illusion, one of the oldest and least understood geometrical visual illusions, a line subdivided by a series of short orthogonal ticks appears longer than an identical line without these. Paradoxically, bisecting a long line with a single tick leads to perceived shortening of the line. We have systematically investigated the effects of adding 1 to 12 ticks on perceived line length and results suggest that at least three mechanisms must be at work: (a) bisection, which reduces perceived length; (b) a filled extent effect, which is also apparent in the von Helmholtz illusion, though no satisfactory explanation for it exists; and (c) a local contour repulsion effect of the penultimate tick upon the perceived position of the end tick, but this effect, though significant, is too small to explain the Oppel-Kundt illusion in its entirety.

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Factors affecting the haptic filled-space illusion for dynamic touch

Cited by 7 publications

References 25 publications

Tactual perception: a review of experimental variables and procedures

Tactual perception: a review of experimental variables and procedures

Short-Term Effects of the Use of Non-Rigid Tools for Postural Control by Adults with Intellectual Disabilities

Crossing the line: Estimations of line length in the Oppel-Kundt illusion

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