Visual enhancement of touch and the bodily self

Longo, Matthew R.; Cardozo, Sean; Haggard, Patrick

doi:10.1016/j.concog.2008.01.001

Cited by 101 publications

(76 citation statements)

References 43 publications

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“…Such visual modulation of bodily signals is also reflected in the tactile domain, as seeing one's hand improves tactile acuity on the hand, compared to seeing a nonhand object (visual enhancement of touch [40]). This latter effect is further boosted by hand ownership manipulations [41], as revealed by the crossmodal congruency effect for hands [42] and avatars [43]. Taken together, these results highlight the role of visual signals in experimentally and neurologically induced altered states of BSC.…”

Section: Influences Of Vision On Bodily Self-consciousnesssupporting

confidence: 50%

Visual consciousness and bodily self-consciousness

Faivre

Salomon

Blanke

2015

Current Opinion in Neurology

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Purpose of reviewIn recent years, consciousness has become a central topic in cognitive neuroscience. This review focuses on the relation between bodily self-consciousness -the feeling of being a subject in a body -and visual consciousness -the subjective experience associated with the perception of visual signals. Recent findingsFindings from clinical and experimental work have shown that bodily self-consciousness depends on specific brain networks and is related to the integration of signals from multiple sensory modalities including vision. In addition, recent experiments have shown that visual consciousness is shaped by the body, including vestibular, tactile, proprioceptive, and motor signals. SummarySeveral lines of evidence suggest reciprocal relationships between vision and bodily signals, indicating that a comprehensive understanding of visual and bodily self-consciousness requires studying them in unison.

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Section: Influences Of Vision On Bodily Self-consciousnesssupporting

confidence: 50%

Visual consciousness and bodily self-consciousness

Faivre

Salomon

Blanke

2015

Current Opinion in Neurology

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“…It is currently unclear which aspect of seeing the hand is responsible for the present effects. One previous study found that the enhancing effect of seeing one's body on touch was linked primarily to sense of ownership (Longo et al, 2008a). In contrast, other effects, such as acceleration of visual reaction times (Longo and Haggard, 2009) and proprioceptive integration (Tsakiris et al, 2006), appeared to be related to agency.…”

Section: Discussionmentioning

confidence: 93%

“…In a control condition, participants saw the mirror image of a non-hand object. The mirror box provides an elegant experimental means of manipulating vision of the body while keeping vision non-informative about stimulation and has been used for this reason previously (Harris et al, 2007;Longo et al, 2008a;Moseley and Wiech, 2009). We measured subjective ratings of pain intensity and unpleasantness, using a visual-analog scale (VAS) and cortical processing using LEPs.…”

Section: Introductionmentioning

confidence: 99%

Visually Induced Analgesia: Seeing the Body Reduces Pain

Longo¹,

Betti²,

Aglioti³

et al. 2009

J. Neurosci.

226

272

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Given previous reports of strong interactions between vision and somatic senses, we investigated whether vision of the body modulates pain perception. Participants looked into a mirror aligned with their body midline at either the reflection of their own left hand (creating the illusion that they were looking directly at their own right hand) or the reflection of a neutral object. We induced pain using an infrared laser and recorded nociceptive laser-evoked potentials (LEPs). We also collected subjective ratings of pain intensity and unpleasantness. Vision of the body produced clear analgesic effects on both subjective ratings of pain and the N2/P2 complex of LEPs. Similar results were found during direct vision of the hand, without the mirror. Furthermore, these effects were specific to vision of one's own hand and were absent when viewing another person's hand. These results demonstrate a novel analgesic effect of non-informative vision of the body.

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“…This question relates to the sufficient and necessary conditions to attribute an external object to our body. The second experiment suggests that mere exposure to the rubber hand is not enough to induce a full-blown embodiment of the RH [24]. We hypothesized that expectations about upcoming sensory events with respect to a rubber hand are sufficient to induce an SO over the same rubber hand, as measured by questionnaire and SCR.…”

Section: Discussionmentioning

confidence: 99%

The body beyond the body: expectation of a sensory event is enough to induce ownership over a fake hand

et al. 2013

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ResearchCite this article: Ferri F, Chiarelli AM, Merla A, Gallese V, Costantini M. 2013 The body beyond the body: expectation of a sensory event is enough to induce ownership over a fake hand. Proc R Soc B 280: 20131140. http The body beyond the body: expectation of a sensory event is enough to induce ownership over a fake hand More than 100 papers have been published on the rubber hand illusion since its discovery 14 years ago. The illusion has been proposed as a demonstration that the body is distinguished from other objects by its participation in specific forms of intermodal perceptual correlation. Here, we radically challenge this view by claiming that perceptual correlation is not necessary to produce the experience of this body as mine. Each of 15 participants was seated with his/her right arm resting upon a table just below another smaller table. Thus, the real hand was hidden from the participant's view and a life-sized rubber model of a right hand was placed on the small table in front of the participant. The participant observed the experimenter's hand while approaching-without touching-the rubber hand. Phenomenology of the illusion was measured by means of skin conductance response and questionnaire. Both measures indicated that participants experienced the illusion that the experimenter's hand was about to touch their hidden hand rather than the rubber hand, as if the latter replaced their own hand. This did not occur when the rubber hand was rotated by 1808 or replaced by a piece of wood. This illusion indicates that our brain does not build a sense of self in a merely reactive way, via perceptual correlations; rather it generates predictions on what may or may not belong to itself.

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Visual enhancement of touch and the bodily self

Cited by 101 publications

References 43 publications

Visual consciousness and bodily self-consciousness

Visual consciousness and bodily self-consciousness

Visually Induced Analgesia: Seeing the Body Reduces Pain

The body beyond the body: expectation of a sensory event is enough to induce ownership over a fake hand

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