The body in the brain: neural bases of corporeal awareness

Berlucchi, Giovanni; Aglioti, Salvatore Maria

doi:10.1016/s0166-2236(97)01136-3

Cited by 460 publications

(249 citation statements)

References 43 publications

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“…We wonder why there is a different involvement of right and left TPJ in autoscopic phenomena as there is evidence that out-of-body experiences are more frequent after damage to the right TPJ causing stronger and distinct abnormalities in body ownership and embodiment than heautoscopy. This seems to be in agreement with the general observation that corporeal awareness and the experience of body ownership are more likely dependent on the right hemisphere [1,7]. In healthy subjects, sense of body ownership and self-attribution of actions are also more specifically related to right posterior insula activity [49,115].…”

Section: Linking Abnormal Body Ownership and Embodiment At The Multissupporting

confidence: 91%

Body ownership and embodiment: Vestibular and multisensory mechanisms

Lopez

Halje

Blanke

2008

Neurophysiologie Clinique/Clinical Neurophysiology

230

163

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Summary Body ownership and embodiment are two fundamental mechanisms of selfconsciousness. The present article reviews neurological data about paroxysmal illusions during which body ownership and embodiment are affected differentially: autoscopic phenomena (out-of-body experience, heautoscopy, autoscopic hallucination, feeling-of-a-presence) and the room tilt illusion. We suggest that autoscopic phenomena and room tilt illusion are related to different types of failures to integrate body-related information (vestibular, proprioceptive and tactile cues) in addition to a mismatch between vestibular and visual references. In these patients, altered body ownership and embodiment has been shown to occur due to pathological activity at the temporoparietal junction and other vestibular-related areas arguing for a key importance of vestibular processing. We also review the possibilities of manipulating body ownership and embodiment in healthy subjects through exposition to weightlessness as well as caloric and galvanic stimulation of the peripheral vestibular apparatus. In healthy subjects, disturbed self-processing might be related to interference of vestibular stimulation with vestibular cortex leading to disintegration of bodily information and altered body ownership and embodiment. We finally propose a differential contribution of the vestibular cortical areas to the different forms of altered body ownership and embodiment. Résumé L'attribution du corps propre et de ses éléments constitutifs (body ownership), ainsi que le sentiment d'incarnation (embodiment) -le fait d'habiter ce corps, d'être localisé dans les limites physiques de ce corps -, sont deux éléments fondamentaux de la conscience de soi. Nous faisons ici la synthèse de données issues de la neurologie montrant que des manifestations paroxystiques telles que les phénomènes autoscopiques (expérience de sortie du corps, héautoscopie, hallucination autoscopique, sensation de présence) et l'illusion de bascule de l'environnement (room tilt illusion) se caractérisent par une atteinte différentielle des mécanismes d'attribution du corps propre et du sentiment d'incarnation. Nous faisons l'hypothèse que les différents phénomènes autoscopiques et l'illusion de bascule de l'environnement se caractérisent par différents patrons de déficits d'intégration des informations sensorielles corporelles (informations visuelles, musculaires proprioceptives et tactiles) combinés à une perte de cohérence entre les références visuelles et vestibulaires. Chez les patients souffrant de phénomènes autoscopiques, les déficits d'attribution du corps propre et du sentiment d'incarnation ont été liés à un dysfonctionnement au niveau de la jonction temporopariétale et d'autres régions corticales recevant des informations vestibulaires, suggérant une contribution importante des afférences vestibulaires dans les mécanismes de la conscience de soi. Nous rapportons également des données de la littérature recueillies chez des sujets sains suggérant la possibilité de manipuler l'attribution ...

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Section: Linking Abnormal Body Ownership and Embodiment At The Multissupporting

confidence: 91%

Body ownership and embodiment: Vestibular and multisensory mechanisms

Lopez

Halje

Blanke

2008

Neurophysiologie Clinique/Clinical Neurophysiology

230

163

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“…Neuropsychological studies in humans have demonstrated that the patients with damage to the parietal lobe show the neglect syndrome of their own bodies and the introspective experiences of distortion and extinction of their body images (Holmes, 1918;Triggs et al, 1994;Berlucchi and Aglioti, 1997). Specifically, in the body cognition disorder, the angular gyrus could be a crucial role in a neural network that mediates one's own body perception (Halligan et al, 1995).…”

Section: Discussionmentioning

confidence: 99%

Cerebral cortical dysfunction in patients with temporomandibular disorders in association with jaw movement observation

Shibukawa

Ishikawa

Kato

et al. 2007

Pain

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Temporomandibular disorders (TMD) represent a group of chronic painful conditions in the masticatory musculature and temporomandibular joint. To examine possible changes in cortical machinery in TMD patients, we compared neuromagnetic signals evoked by cortical neurons between healthy subjects and TMD patients while they were carefully observing the video frames of jaw-opening movements performed by another person. During the movement observation task in the healthy subjects, we found cortical activation in t he following sequence with left hemisphere dominance: 1) the occipitotemporal region near the inferior temporal sulcus (human homologue of MT/V5 in monkeys), 2) the inferior parietal cortex (IPC), and 3) the anterior part of the inferior-lateral precentral gyrus (PrCG). In the TMD patients, however, we found deficit or marked attenuation of the neuromagnetic responses in the PrCG and IPC, while the activity of the MT/V5 showed no differences from that in the healthy subjects. In addition, we could not find any differences in cortical magnetic responses between healthy subjects and TMD patients when they were observing palm-opening movements, indicating that cortical dysfunction associated with jaw-movement observation is specific phenomena in the patients of TMD. Thus the present study provides new neuropathological evidence that TMD patients exhibit dysfunction of recognition mechanisms in cerebral cortex during motor observation, and suggests that disturbance of cortical functions

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“…Furthermore, Kew et al (1994) found abnormal increases in the posterior parietal cortex activity related to movements of the phantom arm. Furthermore, while ablation of SI has remarkably little effect on phantom limbs (White & Sweet, 1969), some authors have reported that lesions of the posterior parietal cortex can suppress the experience of phantom limbs (Berlucchi & Aglioti, 1997). Thus, while SI may be involved in the generation of pain related to phantom limbs, it does not appear to be fundamentally involved in the generation of the phantom limb as such, a function more clearly related to the PPC.…”

Section: The Conscious Body Imagementioning

confidence: 99%

More than skin deep: Body representation beyond primary somatosensory cortex

2010

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The neural circuits underlying initial sensory processing of somatic information are relatively well understood. In contrast, the processes that go beyond primary somatosensation to create more abstract representations related to the body are less clear. In this review, we focus on two classes of higher-order processing beyond somatosensation. Somatoperception refers to the process of perceiving the body itself, and particularly of ensuring somatic perceptual constancy.We review three key elements of somatoperception: (a) remapping information from the body surface into an egocentric reference frame (b) exteroceptive perception of objects in the external world through their contact with the body and (c) interoceptive percepts about the nature and state of the body itself. Somatorepresentation, in contrast, refers to the essentially cognitive process of constructing semantic knowledge and attitudes about the body, including: (d) lexicalsemantic knowledge about bodies generally and one's own body specifically, (e) configural knowledge about the structure of bodies, (f) emotions and attitudes directed towards one's own body, and (g) the link between physical body and psychological self. We review a wide range of neuropsychological, neuroimaging and neurophysiological data to explore the dissociation between these different aspects of higher somatosensory function.Body Beyond SI 3

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The body in the brain: neural bases of corporeal awareness

Cited by 460 publications

References 43 publications

Body ownership and embodiment: Vestibular and multisensory mechanisms

Body ownership and embodiment: Vestibular and multisensory mechanisms

Cerebral cortical dysfunction in patients with temporomandibular disorders in association with jaw movement observation

More than skin deep: Body representation beyond primary somatosensory cortex

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