Coupling Inner and Outer Body for Self-Consciousness

Park, Hyeong‐Dong; Blanke, Olaf

doi:10.1016/j.tics.2019.02.002

Cited by 192 publications

(174 citation statements)

References 107 publications

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“…Finally, it is also important to note that our results partially confirmed the hypotheses suggested in two theoretical papers on the topic (Moseley et al, ; Park & Blanke, ), in which an integrated system processing exteroceptive and interoceptive signals has been proposed. Such system would involve the parietal cortex and the insula (Moseley et al, ), or two subnetworks involving the premotor cortex, TPJ, intraparietal sulcus, posterior cingulate cortex, and the insula, overlapping in the intraparietal sulcus (Park & Blanke, ). If on the one hand, we confirmed the role of the parietal regions, precentral and postcentral gyri, and TPJ, on the other hand, we did not find any direct cluster of convergence in the insular cortex.…”

Section: Discussionsupporting

confidence: 90%

Building the bodily self‐awareness: Evidence for the convergence between interoceptive and exteroceptive information in a multilevel kernel density analysis study

Salvato

Richter

Sedeño

et al. 2019

Human Brain Mapping

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Exteroceptive and interoceptive signals shape and sustain the bodily self-awareness.The existence of a set of brain areas, supporting the integration of information coming from the inside and the outside of the body in building the sense of bodily self-awareness has been postulated, yet the evidence remains limited, a matter of discussion never assessed quantitatively. With the aim of unrevealing where in the brain interoceptive and exteroceptive signals may converge, we performed a metaanalysis on imaging studies of the sense of body ownership, modulated by external visuotactile stimulation, and studies on interoception, which involves the selfawareness for internal bodily sensations. Using a multilevel kernel density analysis, we found that processing of stimuli of the two domains converges primarily in the supramarginal gyrus bilaterally. Furthermore, we found a right-lateralized set of areas, including the precentral and postcentral, and superior temporal gyri. We discuss these results and propose this set of areas as ideal candidates to match multiple body-related signals contributing to the creation of a multidimensional representation of the bodily self.

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Section: Discussionsupporting

confidence: 90%

Building the bodily self‐awareness: Evidence for the convergence between interoceptive and exteroceptive information in a multilevel kernel density analysis study

Salvato

Richter

Sedeño

et al. 2019

Human Brain Mapping

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“…Temporal conflicts have been shown to cause a loss of agency, by manipulating sensory action consequences of upper-limb movements and related losses of hand movement agency [8][9][10][11][12][13][14] . When extending such manipulations to a torso-centered bodily system 36,37 , other-agency changes can be introduced 39,66 , together with a state of an altered bodily self-consciousness, including the alien agent 39,66 . We argue that loudness amplification, observed solely in the asynchronous condition, may represent a reduction of auditory self-attenuation, resulting from such other-agency-related alterations in bodily self-consciousness.…”

Section: Discussionmentioning

confidence: 99%

“…In experiment 2 we also tested whether torso-centered tactile feedback (i.e. back) was necessary for the present effects 37 . For this, we added two more conditions in which the same setup was used as in the synchronous and asynchronous conditions, except that tactile feedback was not applied to the back but to the left hand of the participantsi.e.…”

Section: Robotic Systemmentioning

confidence: 99%

“…However, the concept of agency, sensorimotor processes and the comparator model have also been applied to movements of the body as a whole (e.g. gait) [33][34][35] , thus affecting the full-body sensorimotor system associated with self-consciousness 36,37 . Extending previous robotic designs 17,18,20 , Hara et al 38 associated upper-limb sensory prediction signals with reafferent sensory signals at the participants' torso in order to alter the representation of this global, torsocentered bodily system.…”

Section: Introductionmentioning

confidence: 99%

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Sensorimotor conflicts induce somatic passivity and louden quiet voices in healthy listeners

Orepic

Rognini

Kannape

et al. 2020

Preprint

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Word count: Abstract: 234 Text body with abstract: 3981 2 Abstract Sensorimotor conflicts are known to alter the perception of accompanying sensory signals and deficits in sensory attenuation have been observed in schizophrenia. In the auditory domain, selfgenerated tones or voices (compared to tones or voices presented passively or with sensorimotor delays) have been associated with changes in loudness perception and attenuated neural responses. It has been argued that for sensory signals to be attenuated, predicted and sensory consequences must have a consistent spatiotemporal relationship, between button presses and reafferent tactile signals, via predictive sensory signaling, a process altered in schizophrenia.Here, we investigated auditory sensory attenuation for a series of morphed voices while healthy participants applied sensorimotor stimulations that had no spatiotemporal relationship to the voice stimuli and that have been shown to induce mild psychosis-like phenomena. In two independent groups of participants, we report a loudening of silent voices and found this effect only during maximal sensorimotor conflicts (versus several control conditions). Importantly, conflicting sensorimotor stimulation also induced a mild psychosis-like state in the form of somatic passivity and participants who experienced stronger passivity lacked the sensorimotor loudening effect. We argue that this conflict-related sensorimotor loudness amplification may represent a reduction of auditory self-attenuation that is lacking in participants experiencing a concomitant mild psychosis-like state. We interpret our results within the framework of the comparator model of sensorimotor control, and discuss the implications of our findings regarding passivity experiences and hallucinations in schizophrenia.

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“…Researchers in cognitive neuroscience have recently highlighted the crucial role of the processing of somatosensory signals from the torso for global aspects of Bodily Self Consciousness (BSC), a crucial brain mechanism of selfconsciousness based on perceptual mechanisms associated with the integration of multisensory and sensorimotor bodily signals [28], [29]. In these studies, participants were exposed to a large variety of a different conflicting combinations (spatial and/or temporal mismatch) of torso-based touch feedback (e.g., stroking/tapping on the chest/back) and other sensorimotor bodily signals (e.g., visual stimuli and motor action).…”

Section: Introductionmentioning

confidence: 99%

Cogno-Vest: A Torso-Worn, Force Display to Experimentally Induce Specific Hallucinations and Related Bodily Sensations

Jouybari

Jeanmonod

Bleuler

et al. 2020

Preprint

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Recent advances in virtual reality and robotic technologies have allowed researchers to explore the mechanisms underlying bodily aspects of self-consciousness which are largely attributed to the multisensory and sensorimotor processing of bodily signals (bodily self-consciousness, BSC). One key contribution to BSC, that is currently poorly addressed due to the lack of a wearable solution, concerns realistic collision sensations on the torso. Here, we introduce and validate a novel torso-worn force display, the Cogno-vest, to provide mechanical touch on the user's back in a sensorimotor perception experiment. In a first empirical study, we characterized human finger poking (N=28). In order to match these poking characteristics and meet the wearability criteria, we used bi-directional, push-pull solenoids as a force actuator in the Cogno-vest. Subsequently, and based on an iterative, multidisciplinary design procedure, a bodyconforming, unisex, torso-worn force display was prototyped. Finally, we conducted a behavioral study that investigated BSC in 25 healthy participants by introducing conflicting sensorimotor signals between their hand and torso (back). Using the final reiteration of the Cogno-vest we successfully replicated previous findings on illusory states of BSC, characterized by presence hallucinations (PH) and passivity symptoms, and achieved higher illusion ratings compared to static conditions used in prior studies.

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Coupling Inner and Outer Body for Self-Consciousness

Cited by 192 publications

References 107 publications

Building the bodily self‐awareness: Evidence for the convergence between interoceptive and exteroceptive information in a multilevel kernel density analysis study

Building the bodily self‐awareness: Evidence for the convergence between interoceptive and exteroceptive information in a multilevel kernel density analysis study

Sensorimotor conflicts induce somatic passivity and louden quiet voices in healthy listeners

Cogno-Vest: A Torso-Worn, Force Display to Experimentally Induce Specific Hallucinations and Related Bodily Sensations

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