Attenuated self-tickle sensation even under trajectory perturbation

Doorn, George Van; Paton, Bryan; Howell, Jacqui; Hohwy, Jakob

doi:10.1016/j.concog.2015.06.016

Cited by 16 publications

(13 citation statements)

References 22 publications

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“…This proposed mechanism of sensory attenuation can explain several findings in the literature that are difficult to understand under the classic efference copy view (e.g. Bays et al, 2006;Voss et al, 2008;van Doorn et al, 2014van Doorn et al, , 2015Laak et al, 2017).…”

Section: Introductionmentioning

confidence: 77%

Waving goodbye to contrast: Self-generated hand movements attenuate visual sensitivity

Vasser

Vuillaume

Cleeremans

et al. 2018

Preprint

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It is well known that the human brain continuously predicts the sensory consequences of its own body movements, which typically results in sensory attenuation. Yet, the extent and exact mechanisms underlying sensory attenuation are still debated. To explore this issue, we asked participants to decide which of two visual stimuli was of higher contrast in a virtual reality situation where one of the stimuli could appear behind the participants' invisible moving hand or not. Over two experiments, we measured the effects of such "virtual occlusion" on first-order sensitivity and on metacognitive monitoring. Our findings show that self-generated hand movements reduced the apparent contrast of the stimulus. This result can be explained by the active inference theory. Moreover, sensory attenuation seemed to affect only first-order sensitivity and not (second-order) metacognitive judgments of confidence.

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Section: Introductionmentioning

confidence: 77%

Waving goodbye to contrast: Self-generated hand movements attenuate visual sensitivity

Vasser

Vuillaume

Cleeremans

et al. 2018

Preprint

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“…However, as noted by others, this classical explanation based on the efference copy has several shortcomings ( Brown et al , 2013 ; Clark, 2015 ; van Doorn et al , 2014 , 2015 ). Most importantly, there have been previous experimental findings that are in conflict with the efference copy theory.…”

Section: Discussionmentioning

confidence: 99%

Attention is withdrawn from the area of the visual field where the own hand is currently moving

Laak

Vasser

Uibopuu

et al. 2017

Neuroscience of Consciousness

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Self-generated movement leads to the attenuation of predicted sensory consequences of the movement. This mechanism ensures that attention is generally not drawn to sensory signals caused by own movement. Such attenuation has been observed across the animal kingdom and in different sensory modalities. In this study we used novel virtual reality (VR) devices to test the hypothesis that the human brain attenuates visual sensation in the area of the visual field where the subject’s hand is currently moving. We conducted three VR experiments where we monitored hand position during movement while the participants performed a visual search task. In the first two experiments we measured response time for salient moving targets and observed that reaction time (RT) is slower for targets that are behind the (invisible) hand. This result provides the first evidence that the visual motion signals generated by the subject’s own hand movement are suppressed. In the third experiment we observed that RT is also slower for colored targets behind the hand. Our findings provide support for the active inference account of sensory attenuation, which posits that attenuation occurs because attention is withdrawn from the sensory consequences of own movement. Furthermore, we demonstrate how modern VR tools could open up new exciting avenues of research for studying the interplay of action and perception.

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“…Its occurrence over the execution period of the movement has not only been robustly demonstrated for basic perceptual tasks, addressing the presence or quality of brief touches on the moving or resting effectors (Williams & Chapman, 2000Williams et al, 1998). It has also been shown for more complex perceptual tasks, such as the estimation of force magnitude (Bays et al, 2005;Shergill et al, 2003;Shergill et al, 2013), ticklishness (Blakemore, Frith, & Wolpert, 1999;Van Doorn, Paton, Howell, & Hohwy 2015), or the very fine displacement of Braille characters (Ziat, Hayward, Chapman, Ernst, & Lenay, 2010). Furthermore, tactile suppression has been described in a diversity of motor tasks, ranging from simple fingers/arm movements (Bultitude, Juravle, & Spence, 2016;Chapman & Beauchamp, 2006), through goal-directed (bimanual) reaches and reach-to-grasp movements (Buckingham et al, 2010;Gallace, Zeeden, Röder, & Spence, 2010;Juravle et al, 2010;Juravle, McGlone, & Spence, 2013), to more naturalistic movements, such as juggling , catching and throwing a basketball (Juravle & Spence, 2012), or even back-bending movements (Van Hulle, Juravle, Spence, Crombez, & Van Damme, 2013).…”

Section: The Force Matching Taskmentioning

confidence: 96%

Tactile suppression in goal-directed movement

2016

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Sharing numerous characteristics with suppression in the other senses, tactile suppression is a reliable phenomenon that accompanies movement. By investigating the simplest of movements (e.g., finger flexions), early research tried to explain the origins of the phenomenon in terms of motor command generation together with sensory reafference. Here, we review recent research that has delved into (naturalistic) goal-directed movements. In connection with goal-directed movement, tactile suppression is evident as a decrease in behavioural performance measured shortly prior to, and during, movement execution. It is also reflected in a consistent response bias highlighting the (perceptual) uncertainty of the movement. Goal-directed movement supports the forward model and establishes contextual influences as the defining influences on tactile suppression. Depending on the task at hand, people prioritize a certain percept during movement. Future research, we argue, should focus on studying naturalistic movements, or sequences of movements, that share a common meaning or goal.

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Attenuated self-tickle sensation even under trajectory perturbation

Cited by 16 publications

References 22 publications

Waving goodbye to contrast: Self-generated hand movements attenuate visual sensitivity

Waving goodbye to contrast: Self-generated hand movements attenuate visual sensitivity

Attention is withdrawn from the area of the visual field where the own hand is currently moving

Tactile suppression in goal-directed movement

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