That’s my hand! Therefore, that’s my willed action: How body ownership acts upon conscious awareness of willed actions

Burin, Dalila; Pyasik, Maria; Salatino, Adriana; Pia, Lorenzo

doi:10.1016/j.cognition.2017.05.035

Cited by 50 publications

(49 citation statements)

References 56 publications

(95 reference statements)

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“…There is an ongoing discussion regarding the functional role of efference copies and sensory modulations, including agency attribution, and desensitization of sensory apparatus (Gentsch and Schutz-Bosbach, 2011;Burin et al, 2017;Haggard, 2017). Although our study does not address these functional roles, our results suggest that to the extent that sensory modulations are involved in such processes, these processes should have a component of limb specificity.…”

mentioning

confidence: 69%

“…Such efference signals are believed to modulate the neural state in the relevant sensory regions, resulting in differential processing of the actual reafferent (sensory) signal when it finally arrives. Efference copies have been suggested to play an important functional role in various domains including sense of agency (Gentsch and Schutz-Bosbach, 2011;Burin et al, 2017;Haggard, 2017). However, despite important basic and clinical implications ascribed to such efference signals (Pynn and DeSouza, 2013;Shergill et al, 2014), their underlying source and mechanism is poorly understood.…”

Section: Introductionmentioning

confidence: 99%

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Voluntary actions modulate perception and neural representation of action-consequences in a hand-dependent manner

Buaron

Reznik

Gilron

et al. 2020

Preprint

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Evoked neural activity in sensory regions, and perception of sensory stimuli, are modulated when the stimuli are the consequence of voluntary movement as opposed to an external source. It has been suggested that such modulations are due to efference copies of the motor command that are sent to relevant sensory regions during voluntary movement. Given the anatomical-functional laterality bias of the motor system, it is plausible that the pattern of such behavioral and neural sensory modulations will exhibit a similar bias, depending on the effector that was used to trigger the stimulus (e.g. right / left hand). Here we examined this issue in the visual domain using behavioral and neural measures (fMRI). Healthy participants judged the relative brightness of identical visual stimuli that were either self-triggered (using right or left hand button presses), or triggered by the computer. By presenting stimuli to either the right or left visual field, we biased visual-evoked responses to left / right visual cortex.We found stronger perceptual modulations when the triggering hand was ipsi (rather than contra) lateral to the stimulated visual field. At the neural level, we found that despite identical physical properties of the visual consequence, evoked fMRI responses in right and left visual cortices differentiate the identity of the triggering hand (left / right). Our findings support a model in which voluntary actions induce sensory modulations that follow the anatomical-functional bias of the motor system.

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mentioning

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Voluntary actions modulate perception and neural representation of action-consequences in a hand-dependent manner

Buaron

Reznik

Gilron

et al. 2020

Preprint

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“…It is possible that motor behaviour is subject to top-down control in our paradigm, ensuring successful movement even when the sensation of ownership over the limb is reduced. Alternatively, the sense of agency, which co-occurs with ownership under normal conditions and is sometimes affected by manipulations of ownership ( [5,21,78,79], but see [19] for a dissociation of agency and ownership), may be the key component in mediating the capacity of the motor system. Interestingly, we observed in experiment 2 that individuals who reported a greater loss of agency for their own hand moved their finger more slowly (i.e., with smaller velocity).…”

Section: Limb (Dis)ownership and Movement Generationmentioning

confidence: 99%

Weakening the subjective sensation of own hand ownership does not interfere with rapid finger movements

Reader¹,

Ehrsson²

2019

Preprint

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When we perform a movement we generally have a clear distinction between which parts of the world constitute our body and which parts do not. However, how the sense of ownership over our body supports movement is not yet fully understood. We aimed to see whether a sense of ownership over the hand supports the performance of rapid hand movements. In three experiments (n=48, n=30, n=24), we presented participants with congruent and incongruent visuotactile and visuoproprioceptive information regarding their own hand. In keeping with previous experiments, multisensory disintegration resulted in a reduction in the subjective sensation of ownership over the hand, as reflected in questionnaire responses. Following sensory stimulation, participants were required to rapidly abduct their index finger whilst the movement was tracked. We examined the hypothesis that, should a sense of ownership over the limb be necessary for generating rapid movements with that limb, reaction time would increase when hand ownership was reduced, whilst the acceleration and velocity of the movement would decrease. We observed that reductions in own hand ownership did not interfere with rapid index finger abduction, suggesting that the motor system may not be reliant on a subjective sense of ownership over the body in order to generate movement.

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“…The role of proprioception could be tested as well using a vibrator on the arm tendon in order to induce proprioceptive noise and disrupt these signals. Similarly, inducing a rubber hand illusion (Botvinick & Cohen, 1998) has also been shown to lead to cases of sensory attenuation (Burin et al, 2017;Burin et al, 2018). Using this paradigm in that context could make it possible to better understand the role of body ownership and to assess the extent to which the illusion could misplace the effect of the self-generated movement on another visual area.…”

Section: Limitations and Further Questionsmentioning

confidence: 99%

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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That’s my hand! Therefore, that’s my willed action: How body ownership acts upon conscious awareness of willed actions

Cited by 50 publications

References 56 publications

Voluntary actions modulate perception and neural representation of action-consequences in a hand-dependent manner

Voluntary actions modulate perception and neural representation of action-consequences in a hand-dependent manner

Weakening the subjective sensation of own hand ownership does not interfere with rapid finger movements

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

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