Effects of prismatic adaptation on judgements of spatial extent in peripersonal and extrapersonal space

Berberovic, Nadja; Mattingley, Jason B.

doi:10.1016/s0028-3932(02)00090-8

Cited by 108 publications

(80 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It means that a human operator, acting in the environment through a robotics' telemanipulator tool, can circumscribe his/her range of action almost as precisely as when he/she performs the action with his/her own arm. This result suggests that the perturbation of the visuo-motor frame of reference involves a remapping of the body representation as it has been shown in prismatic experiments (Berberovic & Mattingley, 2003). Moreover, since this remapping occurs after limited training, humans appear to rapidly perceive the affordance of the remote control arm.…”

Section: Discussionsupporting

confidence: 58%

Body Schema Deformation in Teleoperation: Effect of Sensori-motor Contingences

Rybarczyk¹,

Mestre²

2011

JPR

View full text Add to dashboard Cite

Neuropsychological and neurophysiological studies have shown that the body schema is deformable. Experimental studies suggest that human and non-human primates extend their pericorporal space internal representation, in such a way to "include" a tool they use. Such plasticity of our body representation might be explained by the fact that an "artefact", integrated into the sensori-motor control loop, is assimilated as being part of the organism. Until now, experiments have been limited to direct interaction with simple tools (like sticks, rakes, etc.). In these conditions, perceptivo-motor relationships are relatively straightforward and natural for the user. The objective of this paper is to study whether the body schema can be altered when the correlation between motor actions and their perceptual consequences is more complex, like in teleoperation situations. In the present study, subjects remotely controlled a robotic arm. Its movements could only be seen through a camera connected to a video terminal. The camera was placed at different angles relative to the robotic arm. Results indicate an actual extension of the pericorporal space, only when the topological architecture of the teleoperated system tends to respect the human's sensori-motor contingencies.

show abstract

Section: Discussionsupporting

confidence: 58%

Body Schema Deformation in Teleoperation: Effect of Sensori-motor Contingences

Rybarczyk¹,

Mestre²

2011

JPR

View full text Add to dashboard Cite

show abstract

“…Such efforts could also be informed through research in healthy controls, in whom prism adaptation has been shown to produce changes in spatial cognition that resemble some of those that are shown by neglect patients (Bultitude & Woods, 2010;Loftus, Nicholls, Mattingley, & Bradshaw, 2008;Loftus, Vijayakumar, & Nicholls, 2009;Michel et al, 2003;Michel, Pisella, Prablanc, Rode, & Rossetti, 2007;Nicholls, Kamer, & Loftus, 2008). Mirroring the directionally-selective effects of prism adaptation in neglect patients, changes in spatial cognition in healthy controls almost exclusively follow adaptation to leftward-shifting prisms, although there have been isolated reports of such changes following adaptation to rightwardshifting prisms, too (Berberovic & Mattingley, 2003;Striemer, Sablatnig, & Danckert, 2006).…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Studying the neural bases of prism adaptation using fMRI: A technical and design challenge

et al. 2016

View full text Add to dashboard Cite

Prism adaptation induces rapid recalibration of visuomotor coordination. The neural mechanisms of prism adaptation have come under scrutiny since the observations that the technique can alleviate hemispatial neglect following stroke, and can alter spatial cognition in healthy controls. Relative to non-imaging behavioral studies, fMRI investigations of prism adaptation face several challenges arising from the confined physical environment of the scanner and the supine position of the participants. Any researcher who wishes to administer prism adaptation in an fMRI environment must adjust their procedures enough to enable the experiment to be performed, but not so much that the behavioral task departs too much from true prism adaptation. Furthermore, the specific temporal dynamics of behavioral components of prism adaptation present additional challenges for measuring their neural correlates. We developed a system for measuring the key features of prism adaptation behavior within an fMRI environment. To validate our configuration, we present behavioral (pointing) and head movement data from 11 righthemisphere lesioned patients and 17 older controls who underwent sham and real prism adaptation in an MRI scanner. Most participants could adapt to prismatic displacement with minimal head movements, and the procedure was well tolerated. We propose recommendations for fMRI studies of prism adaptation based on the design-specific constraints and our results.

show abstract

“…If BIID evolves from altered attentional processes and/or deficits in integration of sensory information from the affected limb(s), then crossing the limbs, or wear deviating wedge prisms to shift left-sided body space into right body space (e.g., see Berberovic and Mattingley 2003), could provide insight to whether it is simply the left leg that is affected irrespective of body space (implicating body representations and/or multisensory integration), or whether it is the left body space itself that determines the deficit (implicating attentional processes and multisensory integration). Likewise, the "cutaneous rabbit illusion" (Miyazaki et al 2010), mirror visual feedback (Ramachandran et al 1995), virtual reality (Moseley 2007;Soler et al 2010), or rubber hand illusion paradigms could be employed to investigate the relative contribution of deranged body representation, and disordered higher-order multisensory processing-e.g., convergence of vision and tactile sensation-in perceived non-belonging of a limb in BIID.…”

Section: Hypotheses and Further Studiesmentioning

confidence: 99%

Body Integrity Identity Disorder: Deranged Body Processing, Right Fronto-Parietal Dysfunction, and Phenomenological Experience of Body Incongruity

et al. 2011

View full text Add to dashboard Cite

Body integrity identity disorder (BIID) is characterised by profound experience of incongruity between the biological and desired body structure. The condition manifests in "non-belonging" of body parts, and the subsequent desire to amputate, paralyse or disable a limb. Little is known about BIID; however, a neuropsychological model implicating right fronto-parietal and insular networks is emerging, with potential disruption to body representation. We argue that, as there is scant systematic research on BIID published to date and much of the research is methodologically weak, it is premature to assume that the only process underlying bodily experience that is compromised is body representation. The present review systematically investigates which aspects of neurological processing of the body, and sense of self, may be compromised in BIID. We argue that the disorder most likely reflects dysregulation in multiple levels of body processing. That is, the disunity between self and the body could arguably come about through congenital and/or developmental disruption of body representations, which, together with altered multisensory integration, may preclude the experience of self-attribution and embodiment of affected body parts. Ulimately, there is a need for official diagnostic criteria to facilitate epidemiological characterisation of BIID, and for further research to systematically investigate which aspects of body representation and processing are truly compromised in the disorder.

show abstract

Effects of prismatic adaptation on judgements of spatial extent in peripersonal and extrapersonal space

Cited by 108 publications

References 38 publications

Body Schema Deformation in Teleoperation: Effect of Sensori-motor Contingences

Body Schema Deformation in Teleoperation: Effect of Sensori-motor Contingences

Studying the neural bases of prism adaptation using fMRI: A technical and design challenge

Body Integrity Identity Disorder: Deranged Body Processing, Right Fronto-Parietal Dysfunction, and Phenomenological Experience of Body Incongruity

Contact Info

Product

Resources

About