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Dupin L, Gerardin E, Térémetz M, Hamdoun S, Turc G, Maier MA, Baron JC, Lindberg PG. Alterations of tactile and anatomical spatial representations of the hand after stroke. Cortex 2024; 177:68-83. [PMID: 38838560 DOI: 10.1016/j.cortex.2024.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 03/19/2024] [Accepted: 04/18/2024] [Indexed: 06/07/2024]
Abstract
Stroke often causes long-term motor and somatosensory impairments. Motor planning and tactile perception rely on spatial body representations. However, the link between altered spatial body representations, motor deficit and tactile spatial coding remains unclear. This study investigates the relationship between motor deficits and alterations of anatomical (body) and tactile spatial representations of the hand in 20 post-stroke patients with upper limb hemiparesis. Anatomical and tactile spatial representations were assessed from 10 targets (nails and knuckles) respectively cued verbally by their anatomical name or using tactile stimulations. Two distance metrics (hand width and finger length) and two structural measures (relative organization of targets positions and angular deviation of fingers from their physical posture) were computed and compared to clinical assessments, normative data and lesions sites. Over half of the patients had altered anatomical and/or tactile spatial representations. Metrics of tactile and anatomical representations showed common variations, where a wider hand representation was linked to more severe motor deficits. In contrast, alterations in structural measures were not concomitantly observed in tactile and anatomical representations and did not correlate with clinical assessments. Finally, a preliminary analysis showed that specific alterations in tactile structural measures were associated with dorsolateral prefrontal stroke lesions. This study reveals shared and distinct characteristics of anatomical and tactile hand spatial representations, reflecting different mechanisms that can be affected differently after stroke: metrics and location of tactile and anatomical representations were partially shared while the structural measures of tactile and anatomical representations had distinct characteristics.
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Affiliation(s)
- Lucile Dupin
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France; Université Paris Cité, INCC UMR 8002, CNRS, F-75006 Paris, France.
| | - Eloïse Gerardin
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France
| | - Maxime Térémetz
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France
| | - Sonia Hamdoun
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France; Service de Médecine Physique et de Réadaptation, GHU-Paris Psychiatrie et Neurosciences, Hôpital Sainte Anne, F-75014 Paris, France
| | - Guillaume Turc
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France; Department of Neurology, GHU-Paris Psychiatrie et Neurosciences, FHU Neurovasc, Paris, France
| | - Marc A Maier
- Université Paris Cité, INCC UMR 8002, CNRS, F-75006 Paris, France
| | - Jean-Claude Baron
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France; Department of Neurology, GHU-Paris Psychiatrie et Neurosciences, FHU Neurovasc, Paris, France
| | - Påvel G Lindberg
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, F-75014 Paris, France
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Ryan CP, Ciotti S, Balestrucci P, Bicchi A, Lacquaniti F, Bianchi M, Moscatelli A. The relativity of reaching: Motion of the touched surface alters the trajectory of hand movements. iScience 2024; 27:109871. [PMID: 38784005 PMCID: PMC11112373 DOI: 10.1016/j.isci.2024.109871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 11/10/2023] [Accepted: 04/29/2024] [Indexed: 05/25/2024] Open
Abstract
For dexterous control of the hand, humans integrate sensory information and prior knowledge regarding their bodies and the world. We studied the role of touch in hand motor control by challenging a fundamental prior assumption-that self-motion of inanimate objects is unlikely upon contact. In a reaching task, participants slid their fingertips across a robotic interface, with their hand hidden from sight. Unbeknownst to the participants, the robotic interface remained static, followed hand movement, or moved in opposition to it. We considered two hypotheses. Either participants were able to account for surface motion or, if the stationarity assumption held, they would integrate the biased tactile cues and proprioception. Motor errors consistent with the latter hypothesis were observed. The role of visual feedback, tactile sensitivity, and friction was also investigated. Our study carries profound implications for human-machine collaboration in a world where objects may no longer conform to the stationarity assumption.
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Affiliation(s)
- Colleen P. Ryan
- Department of Systems Medicine and Centre of Space Biomedicine, University of Rome Tor Vergata, 00133 Rome, Italy
- Laboratory of Neuromotor Physiology, Santa Lucia Foundation IRCCS, 00179 Rome, Italy
| | - Simone Ciotti
- Laboratory of Neuromotor Physiology, Santa Lucia Foundation IRCCS, 00179 Rome, Italy
- Research Centre E. Piaggio and Department of Information Engineering, University of Pisa, 56122 Pisa, Italy
| | - Priscilla Balestrucci
- Laboratory of Neuromotor Physiology, Santa Lucia Foundation IRCCS, 00179 Rome, Italy
| | - Antonio Bicchi
- Research Centre E. Piaggio and Department of Information Engineering, University of Pisa, 56122 Pisa, Italy
- Istituto Italiano di Tecnologia, 16163 Genova, Italy
| | - Francesco Lacquaniti
- Department of Systems Medicine and Centre of Space Biomedicine, University of Rome Tor Vergata, 00133 Rome, Italy
- Laboratory of Neuromotor Physiology, Santa Lucia Foundation IRCCS, 00179 Rome, Italy
| | - Matteo Bianchi
- Research Centre E. Piaggio and Department of Information Engineering, University of Pisa, 56122 Pisa, Italy
| | - Alessandro Moscatelli
- Department of Systems Medicine and Centre of Space Biomedicine, University of Rome Tor Vergata, 00133 Rome, Italy
- Laboratory of Neuromotor Physiology, Santa Lucia Foundation IRCCS, 00179 Rome, Italy
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Kilteni K, Ehrsson HH. Dynamic changes in somatosensory and cerebellar activity mediate temporal recalibration of self-touch. Commun Biol 2024; 7:522. [PMID: 38702520 PMCID: PMC11068753 DOI: 10.1038/s42003-024-06188-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 04/11/2024] [Indexed: 05/06/2024] Open
Abstract
An organism's ability to accurately anticipate the sensations caused by its own actions is crucial for a wide range of behavioral, perceptual, and cognitive functions. Notably, the sensorimotor expectations produced when touching one's own body attenuate such sensations, making them feel weaker and less ticklish and rendering them easily distinguishable from potentially harmful touches of external origin. How the brain learns and keeps these action-related sensory expectations updated is unclear. Here we employ psychophysics and functional magnetic resonance imaging to pinpoint the behavioral and neural substrates of dynamic recalibration of expected temporal delays in self-touch. Our psychophysical results reveal that self-touches are less attenuated after systematic exposure to delayed self-generated touches, while responses in the contralateral somatosensory cortex that normally distinguish between delayed and nondelayed self-generated touches become indistinguishable. During the exposure, the ipsilateral anterior cerebellum shows increased activity, supporting its proposed role in recalibrating sensorimotor predictions. Moreover, responses in the cingulate areas gradually increase, suggesting that as delay adaptation progresses, the nondelayed self-touches trigger activity related to cognitive conflict. Together, our results show that sensorimotor predictions in the simplest act of touching one's own body are upheld by a sophisticated and flexible neural mechanism that maintains them accurate in time.
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Affiliation(s)
- Konstantina Kilteni
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
- Donders Institute for Brain, Cognition and Behaviour, Radboud University, Nijmegen, The Netherlands.
| | - H Henrik Ehrsson
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
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Cataldo A, Crivelli D, Bottini G, Gomi H, Haggard P. Active self-touch restores bodily proprioceptive spatial awareness following disruption by 'rubber hand illusion'. Proc Biol Sci 2024; 291:20231753. [PMID: 38228504 DOI: 10.1098/rspb.2023.1753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 12/08/2023] [Indexed: 01/18/2024] Open
Abstract
Bodily self-awareness relies on a constant integration of visual, tactile, proprioceptive, and motor signals. In the 'rubber hand illusion' (RHI), conflicting visuo-tactile stimuli lead to changes in self-awareness. It remains unclear whether other, somatic signals could compensate for the alterations in self-awareness caused by visual information about the body. Here, we used the RHI in combination with robot-mediated self-touch to systematically investigate the role of tactile, proprioceptive and motor signals in maintaining and restoring bodily self-awareness. Participants moved the handle of a leader robot with their right hand and simultaneously received corresponding tactile feedback on their left hand from a follower robot. This self-touch stimulation was performed either before or after the induction of a classical RHI. Across three experiments, active self-touch delivered after-but not before-the RHI, significantly reduced the proprioceptive drift caused by RHI, supporting a restorative role of active self-touch on bodily self-awareness. The effect was not present during involuntary self-touch. Unimodal control conditions confirmed that both tactile and motor components of self-touch were necessary to restore bodily self-awareness. We hypothesize that active self-touch transiently boosts the precision of proprioceptive representation of the touched body part, thus counteracting the visual capture effects that underlie the RHI.
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Affiliation(s)
- Antonio Cataldo
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queen Square, London WC1N 3AZ, UK
| | - Damiano Crivelli
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queen Square, London WC1N 3AZ, UK
- Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
- NeuroMi, Milan Centre for Neuroscience, Milan, Italy
| | - Gabriella Bottini
- Department of Brain and Behavioural Sciences, University of Pavia, Pavia, Italy
- NeuroMi, Milan Centre for Neuroscience, Milan, Italy
- Cognitive Neuropsychology Centre, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy
| | - Hiroaki Gomi
- NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi, Japan
| | - Patrick Haggard
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17 Queen Square, London WC1N 3AZ, UK
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Salvato G, Crivelli D, Gandola M, Bottini G. Self-touch facilitates the recognition of the dis-owned left hand in somatoparaphrenia: a single case study. Neurocase 2023; 29:133-140. [PMID: 38650434 DOI: 10.1080/13554794.2024.2345405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
We investigated whether self-administered tactile stimulation could act as a temporary restorative mechanism for body ownership disorders, both implicitly and explicitly. We tested this hypothesis in a patient with somatoparaphrenia, who displayed increased accuracy in explicitly recognizing their left hand during self-touch. Furthermore, the patient implicitly perceived their hand and the experimenter's hand as more belonging to their own body compared to conditions where vision was the sole sensory input. These findings highlight the importance of self-touch in maintaining a coherent body representation, while also demonstrating the potential dissociation between the recovery of explicit and implicit perceptions of body ownership.
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Affiliation(s)
- Gerardo Salvato
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- NeuroMi, Milan Centre for Neuroscience, Milan, Italy
- Cognitive Neuropsychology Centre, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy
| | - Damiano Crivelli
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- NeuroMi, Milan Centre for Neuroscience, Milan, Italy
| | - Martina Gandola
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- NeuroMi, Milan Centre for Neuroscience, Milan, Italy
- Cognitive Neuropsychology Centre, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy
| | - Gabriella Bottini
- Department of Brain and Behavioral Sciences, University of Pavia, Pavia, Italy
- NeuroMi, Milan Centre for Neuroscience, Milan, Italy
- Cognitive Neuropsychology Centre, ASST Grande Ospedale Metropolitano Niguarda, Milano, Italy
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Cataldo A, Di Luca M, Deroy O, Hayward V. Touching with the eyes: Oculomotor self-touch induces illusory body ownership. iScience 2023; 26:106180. [PMID: 36895648 PMCID: PMC9988563 DOI: 10.1016/j.isci.2023.106180] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 11/22/2022] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Self-touch plays a central role in the construction and plasticity of the bodily self. But which mechanisms support this role? Previous accounts emphasize the convergence of proprioceptive and tactile signals from the touching and the touched body parts. Here, we hypothesise that proprioceptive information is not necessary for self-touch modulation of body-ownership. Because eye movements do not rely on proprioceptive signals as limb movements do, we developed a novel oculomotor self-touch paradigm where voluntary eye movements generated corresponding tactile sensations. We then compared the effectiveness of eye versus hand self-touch movements in generating an illusion of owning a rubber hand. Voluntary oculomotor self-touch was as effective as hand-driven self-touch, suggesting that proprioception does not contribute to body ownership during self-touch. Self-touch may contribute to a unified sense of bodily self by binding voluntary actions toward our own body with their tactile consequences.
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Affiliation(s)
- Antonio Cataldo
- Institute of Philosophy, School of Advanced Study, University of London, Senate House, London WC1E 7HU, UK.,Cognition, Values and Behaviour, Ludwig Maximilian University, 80333 München, Germany.,Institute of Cognitive Neuroscience, University College London, Alexandra House 17 Queen Square, London WC1N 3AZ, UK
| | - Massimiliano Di Luca
- Formerly with Facebook Reality Labs, Redmond, WA, USA.,School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Ophelia Deroy
- Institute of Philosophy, School of Advanced Study, University of London, Senate House, London WC1E 7HU, UK.,Cognition, Values and Behaviour, Ludwig Maximilian University, 80333 München, Germany
| | - Vincent Hayward
- Institute of Philosophy, School of Advanced Study, University of London, Senate House, London WC1E 7HU, UK.,Institut des Systèmes Intelligents et de Robotique, Sorbonne Université, 75005 Paris, France
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7
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Kong G, Cataldo A, Nitu M, Dupin L, Gomi H, Haggard P. Interhemispheric communication during haptic self-perception. Proc Biol Sci 2022; 289:20221977. [PMID: 36475437 PMCID: PMC9727658 DOI: 10.1098/rspb.2022.1977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
During the haptic exploration of a planar surface, slight resistances against the hand's movement are illusorily perceived as asperities (bumps) in the surface. If the surface being touched is one's own skin, an actual bump would also produce increased tactile pressure from the moving finger onto the skin. We investigated how kinaesthetic and tactile signals combine to produce haptic perceptions during self-touch. Participants performed two successive movements with the right hand. A haptic force-control robot applied resistances to both movements, and participants judged which movement was felt to contain the larger bump. An additional robot delivered simultaneous but task-irrelevant tactile stroking to the left forearm. These strokes contained either increased or decreased tactile pressure synchronized with the resistance-induced illusory bump encountered by the right hand. We found that the size of bumps perceived by the right hand was enhanced by an increase in left tactile pressure, but also by a decrease. Tactile event detection was thus transferred interhemispherically, but the sign of the tactile information was not respected. Randomizing (rather than blocking) the presentation order of left tactile stimuli abolished these interhemispheric enhancement effects. Thus, interhemispheric transfer during bimanual self-touch requires a stable model of temporally synchronized events, but does not require geometric consistency between hemispheric information, nor between tactile and kinaesthetic representations of a single common object.
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Affiliation(s)
- Gaiqing Kong
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17–19 Queen Square, London WCIN 3AZ, UK,Neuroscience Research Centre of Lyon, INSERM U1028—CNRS UMR5292, Inserm Building, 16 avenue du doyen Lépine, 69500 Bron, France
| | - Antonio Cataldo
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17–19 Queen Square, London WCIN 3AZ, UK,Institute of Philosophy, University of London, Senate House, Malet Street, London WC1E 7HU, UK
| | - Miruna Nitu
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17–19 Queen Square, London WCIN 3AZ, UK
| | - Lucile Dupin
- Institut de Psychiatrie et Neurosciences de Paris, Inserm U 1266—Université de Paris—Hôpital Sainte-Anne, Paris, France
| | - Hiroaki Gomi
- NTT Communication Science Laboratories, Nippon Telegraph and Telephone Corporation, Atsugi, Japan
| | - Patrick Haggard
- Institute of Cognitive Neuroscience, University College London, Alexandra House, 17–19 Queen Square, London WCIN 3AZ, UK,Chaire Blaise Pascal de la Région Ile de France, Laboratoire de Neurosciences Cognitives et Computationnelles, Département d'Etudes Cognitives, Ecole Normale Supérieure, PSL University, Paris, France
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Spille JL, Grunwald M, Martin S, Mueller SM. The suppression of spontaneous face touch and resulting consequences on memory performance of high and low self-touching individuals. Sci Rep 2022; 12:8637. [PMID: 35606459 PMCID: PMC9125538 DOI: 10.1038/s41598-022-12044-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 04/29/2022] [Indexed: 01/18/2023] Open
Abstract
Spontaneous touching of one's own face (sFST) is an everyday behavior that occurs primarily in cognitively and emotionally demanding situations, regardless of a persons' age or gender. Recently, sFST have sparked scientific interest since they are associated with self-inoculation and transmission of respiratory diseases. Several studies addressed the need to reduce sFST behaviors without discussing the underlying functions of this spontaneous behavior. In addition, the question of why this behavior occurs very frequently in some individuals (high self-touching individuals, HT) but less frequently in others (low self-touching individuals, LT) has not yet been addressed. For the first time, we distinguished between HT and LT and investigated the behavioral consequences of sFST suppression in these two groups. For this purpose, we examined performance outcomes of 49 participants depending on sFST behaviors during a haptic working memory task. In addition, we assessed personality traits of HT and LT using the Freiburg Personality Inventory (FPI-R). The results of our study reveal that suppressing sFST in HT is negatively related to memory performance outcomes. Moreover, HT show tendencies to differ from LT in certain personality traits. Our results highlight the relevance of distinguishing between HT and LT in future studies of sFST.
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Affiliation(s)
- Jente L Spille
- Haptic Research Laboratory, Paul Flechsig Institute - Centre of Neuropathology and Brain Research, University of Leipzig, 04103, Leipzig, Germany
| | - Martin Grunwald
- Haptic Research Laboratory, Paul Flechsig Institute - Centre of Neuropathology and Brain Research, University of Leipzig, 04103, Leipzig, Germany
| | - Sven Martin
- Haptic Research Laboratory, Paul Flechsig Institute - Centre of Neuropathology and Brain Research, University of Leipzig, 04103, Leipzig, Germany
| | - Stephanie M Mueller
- Haptic Research Laboratory, Paul Flechsig Institute - Centre of Neuropathology and Brain Research, University of Leipzig, 04103, Leipzig, Germany.
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