Sensorimotor integration during stance: Processing time of active or passive addition or withdrawal of visual or haptic information

Sozzi, Stefania; Do, Manh-Cuong; Monti, A.; Schieppati, Marco

doi:10.1016/j.neuroscience.2012.03.044

Cited by 47 publications

(84 citation statements)

References 91 publications

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“…Only a few studies have addressed the time course of sway before and after a contact transition [2,3,4]. Sway stabilization with light touch is a time-consuming integrative and attention demanding process [2,3,5].…”

Section: Introductionmentioning

confidence: 99%

Consolidation of the postural set during voluntary intermittent light finger contact as a function of hand dominance

Kaulmann

Chen

Johannsen

2017

2017 IEEE World Haptics Conference (WHC)

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Abstract-Light fingertip contact with an earth-fixed referent decreases body sway. In a previous study Johannsen et al. (2014) demonstrated longer return-to-baseline of body sway for intermittent contacts of more than 2 seconds duration. This indicates that sway reduction with light tactile contact involves postural control strategies independent of the availability of tactile feedback and may depend on the intention to control body sway with light touch feedback. In the present study, we investigated the effect of hand dominance on post-contact return-to-baseline to probe for potential inter-hemispheric differences in the utilization of light finger contact for sway control. Twelve healthy, right-handed young adults stood in normal bipedal stance with eyes closed on a force plate with an earth-fixed referent directly in front. Acoustic signals instructed onset and removal of intermittent light touch. We found that return-to-baseline of sway following longer contact durations is affected by hand dominance with the dominant hand resulting in a slower return to No-contact levels of sway. Our results indicate that the light touch postural set is more persistent and might need longer to disengage when established with the dominant hand or takes longer to consolidate when established with the non-dominant hand.

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Section: Introductionmentioning

confidence: 99%

Consolidation of the postural set during voluntary intermittent light finger contact as a function of hand dominance

Kaulmann

Chen

Johannsen

2017

2017 IEEE World Haptics Conference (WHC)

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“…Numerous studies have investigated the nature of this touch effect [3][4][5][6][7][8][9][10][11][12]. However, previous studies on the effect of light skin contact on body sway have focused on steady state contact only; except two [13,14] studies have probed the time course of body sway subsequent to touch onset or withdrawal. The postural control system reweights all available sensory channels in order to optimize the sensorimotor control of stance in altered sensory environments [15].…”

Section: Introductionmentioning

confidence: 99%

“…Rabin and colleagues [13] probed the time course of the light touch effect with a paradigm where finger tip light touch had to be established abruptly. They reported that upon contact body sway is exponentially reduced with a time constant of 1.6 s. In a more recent study, Sozzi and colleagues [14] adopted a paradigm with actively as well as passively initiated, abrupt addition or withdrawal transitions of visual or haptic afferent information. In the active transitions of haptic cues from no-touch to touch, they reported a latency of the onset of sway decrease of around 1.3 s with a time constant of 0.8 s. With regard to an after-effect following touch withdrawal, they observed a shorter latency of the onset of sway increase of just 1 s with a time constant of 0.8 s.…”

Section: Introductionmentioning

confidence: 99%

“…Based on previous studies [13,14], we expected that light touch contact is required to last between 1.5 and 2 s before a reduction in sway will become visible. Sozzi et al [14] documented that a finite amount of time is necessary for central integration process after transition of touch contact.…”

Section: Introductionmentioning

confidence: 99%

“…Sozzi et al [14] documented that a finite amount of time is necessary for central integration process after transition of touch contact. During this time the touch signal has to pass through several stages of processing [20], in which the signal must be disambiguated within the specific postural context and interpreted in an egocentric frame of reference.…”

Section: Introductionmentioning

confidence: 99%

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Effects and after-effects of voluntary intermittent light finger touch on body sway

Johannsen¹,

Lou²,

Chen³

2014

Gait & Posture

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Effects of light touch on body sway have usually been investigated with some form of constant contact. Only two studies investigated transient sway dynamics following the addition or withdrawal of light touch. This study adopted a paradigm of intermittent touch and assessed body sway during as well as following short periods of touch of varying durations to investigate whether effects and after-effects of touch differ as a function of touch duration. In a modified heel-to-toe posture, 15 blindfolded participants alternated their index finger position between no-touching and touching on a strain gauge in response to low- and high-pitched auditory cues. Five trials of 46 s duration were segmented into 11 sections: a 6-s no-touching period was followed by five pseudo-randomly ordered touching periods of 0.5-, 1-, 1.5-, 2-, and 5-s duration, each of which was followed by another 6-s no-touching interval. Consistent with previous research, compared to no-touching intervals sway was reduced during touch periods with touch durations greater than 2 s. Progressive reductions in sway were evident after touch onset. After touch withdrawal in the 2-s touch condition, postural sway increased and returned to baseline level nearly immediately. Interestingly, in the 5-s touch condition, reductions in sway persisted even after touch withdrawal in the medio-lateral and antero-posterior plane for around 2.5 s and 5.5 s, respectively. Our intermittent touch paradigm resulted in duration-dependent touch effects and after-effects; the latter is a novel finding and may result from a more persistent postural set involved in proactive sway control.

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An Overview of the Physiology and Pathophysiology of Postural Control

Nardone

Turcato

2018

Biosystems &Amp; Biorobotics

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Sensorimotor integration during stance: Processing time of active or passive addition or withdrawal of visual or haptic information

Cited by 47 publications

References 91 publications

Consolidation of the postural set during voluntary intermittent light finger contact as a function of hand dominance

Consolidation of the postural set during voluntary intermittent light finger contact as a function of hand dominance

Effects and after-effects of voluntary intermittent light finger touch on body sway

An Overview of the Physiology and Pathophysiology of Postural Control

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