Body ownership promotes visual awareness

Hoort, Björn van der; Reingardt, Maria; Ehrsson, H. Henrik

doi:10.7554/elife.26022

Cited by 19 publications

(16 citation statements)

References 63 publications

(82 reference statements)

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“…This interpretation, that body ownership influences the interpretation of visual self-motion and self-orientation cues, is consistent with the findings of previous studies showing that body ownership influences visual perceptual processes such as visual size 29 – 31 and visual distance perception 31 , as well as visual awareness 32 . From this “embodied vision” perspective, the present results constitute a new example of body ownership modulating the 3D perception of shaded disk stimuli, which is an indicator of a change in self-orientation perception.…”

Section: Discussionsupporting

confidence: 92%

Body ownership shapes self-orientation perception

Preuss¹,

Brynjarsdóttir²,

Ehrsson³

2018

Sci Rep

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Self-orientation perception is a necessary ability for everyday life that heavily depends on visual and vestibular information. To perceive the orientation of oneself with respect to the external environment would seem to first require that one has a clear sense of one’s own body (‘sense of body ownership’). However, the experimental evidence for this is sparse. Therefore, the aim of the present study was to investigate how the sense of body ownership affects perceived self-orientation. We combined a self-orientation illusion – where the visual scene, i.e., a fully furnished room, was rotated slowly around the roll axis – with a full-body ownership illusion paradigm – where the ownership of a stranger’s body seen from the first-person perspective in the center of the scene was manipulated by synchronous (illusion) or asynchronous (control) visual-tactile stimulation. Participants were asked to judge the appearance of shaded disk stimuli (a shape-from-shading test), which are perceived as three-dimensional (3D) spheres; this perception depends on perceived self-orientation. Illusory body ownership influenced self-orientation as reported subjectively in questionnaires and as evident from the objective shape-from-shading test data. Thus, body ownership determines self-orientation perception, presumably by boosting the weighting of visual cues over the gravitational forces detected by the vestibular system.

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Section: Discussionsupporting

confidence: 92%

Body ownership shapes self-orientation perception

Preuss¹,

Brynjarsdóttir²,

Ehrsson³

2018

Sci Rep

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“…Importantly, and different from Virtual Reality solutions (Van Der Hoort et al, 2017), the ecologicality of our method is much greater. It is the first suppression method that allows fully immersive, real interaction with the subject's surrounding environment, without having to re-represent it in any way.…”

Section: Discussionmentioning

confidence: 95%

“…Van Der Hoort, Reingardt, & Henrik Ehrsson, 2017). In this paper we present a novel variant of the classic CFS method, called real-life CFS, which allows suppression of real, three dimensional objects from awareness for periods of time comparable to those of classic CFS.…”

Section: One Of the Most Popular Methods For Rendering Stimuli Invisimentioning

confidence: 99%

Real-Life Continuous Flash Suppression - Rendering The Real World Unconscious Using Augmented Reality Goggles

Korisky¹,

Hirschhorn²,

Mudrik³

2018

Preprint

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Notice: a peer-reviewed version of this preprint has been published in Behavior Research Methods and is available freely at http://link.springer.com/article/10.3758/s13428-018-1162-0Continuous Flash Suppression (CFS) is a popular method for suppressing visual stimuli from awareness for relatively long periods. Thus far, it has only been used for suppressing two-dimensional images presented on-screen. We present a novel variant of CFS, termed ‘real-life CFS’, with which the actual immediate surroundings of an observer – including three-dimensional, real life objects – can be rendered unconscious. Real-life CFS uses augmented reality goggles to present subjects with CFS masks to their dominant eye, leaving their non-dominant eye exposed to the real world. In three experiments we demonstrate that real objects can indeed be suppressed from awareness using real-life CFS, and that duration suppression is comparable that obtained using the classic, on-screen CFS. We further provide an example for an experimental code, which can be modified for future studies using ‘real-life CFS’. This opens the gate for new questions in the study of consciousness and its functions.

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“…Recent research supports the significance of vision in the interplay between mental and bodily imbalance. According to van der Hoort et al [49], the sense of body ownership also promotes visual awareness.…”

Section: Discussionmentioning

confidence: 99%

Learning oriented physiotherapy (LOP) in anxiety and depression: an 18 months multicentre randomised controlled trial (RCT)

Bratberg

Leira

Granan

et al. 2020

European Journal of Physiotherapy

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Aim: Although many patients with anxiety and depression suffer from muscular pain and bodily dysfunctions, body is largely ignored in treatment. The aim of this study was to investigate the effectiveness of Learning Oriented Physiotherapy (LOP), based on recent knowledge about overlapping brain networks and the need of awakening body awareness in order to synchronise body and mind. Methods: Patients with moderate anxiety and/or depression referred to three outpatient psychiatric clinics in Norway during October 2014 to January 2016 were invited to participate. Of eligible patients, 42 were randomised to LOP and 39 to standard psychiatric treatment (controls). Self-reports of anxiety and depression (HADS), health-related quality of life (EQ-5D-5L) and global health (EQ-VAS) were recorded every 6 months from baseline (T1) to 18 months after (T4). Mixed linear model (MLM) analysis was used to estimate overall differences between groups. Results: After 1 year of follow-up, LOP participants reported higher quality of life and perceived global health than controls. At the end of the trial, there were no mean differences in health outcomes between groups, but LOP participants showed an overall faster rate of recovery than controls. Conclusions: LOP may be as effective as conventional therapies for patients with moderate anxiety and depression.

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Body ownership promotes visual awareness

Cited by 19 publications

References 63 publications

Body ownership shapes self-orientation perception

Body ownership shapes self-orientation perception

Real-Life Continuous Flash Suppression - Rendering The Real World Unconscious Using Augmented Reality Goggles

Learning oriented physiotherapy (LOP) in anxiety and depression: an 18 months multicentre randomised controlled trial (RCT)

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