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Bonnet C, Poulin-Charronnat B, Michel-Colent C. Aftereffects of visuomanual prism adaptation in auditory modality: Review and perspectives. Neurosci Biobehav Rev 2024:105814. [PMID: 39032842 DOI: 10.1016/j.neubiorev.2024.105814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 06/20/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Visuomanual prism adaptation (PA), which consists of pointing to visual targets while wearing prisms that shift the visual field, is one of the oldest experimental paradigms used to investigate sensorimotor plasticity. Since the 2000's, a growing scientific interest emerged for the expansion of PA to cognitive functions in several sensory modalities. The present work focused on the aftereffects of PA within the auditory modality. Recent studies showed changes in mental representation of auditory frequencies and a shift of divided auditory attention following PA. Moreover, one study demonstrated benefits of PA in a patient suffering from tinnitus. According to these results, we tried to shed light on the following question: How could this be possible to modulate audition by inducing sensorimotor plasticity with glasses? Based on the literature, we suggest a bottom-up attentional mechanism involving cerebellar, parietal, and temporal structures to explain crossmodal aftereffects of PA. This review opens promising new avenues of research about aftereffects of PA in audition and its implication in the therapeutic field of auditory troubles.
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Affiliation(s)
- Clémence Bonnet
- LEAD - CNRS UMR5022, Université de Bourgogne, Pôle AAFE, 11 Esplanade Erasme, 21000 Dijon, France.
| | | | - Carine Michel-Colent
- CAPS, Inserm U1093, Université de Bourgogne, UFR des Sciences du Sport, F-21000 Dijon, France
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Ardonceau V, Poulin-Charronnat B, Bonnet C, Sirandré C, Michel-Colent C. Vertical prism adaptation, but not sound presentation, modulates the visuospatial representation: A manual line-bisection study. Cortex 2024; 177:330-345. [PMID: 38908363 DOI: 10.1016/j.cortex.2024.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 04/04/2024] [Accepted: 05/21/2024] [Indexed: 06/24/2024]
Abstract
The present study aimed at testing whether vertical prism adaptation (PA) can modulate vertical visuospatial representation, assessed with a vertical manual line-bisection (MLB) task (Experiment 1). In a second time, we wanted to investigate the potential influence of sound presentation during such a task. Sound is a spatially valued element that has previously been reported to modify horizontal visuospatial representation. In Experiment 2, we presented either a high pitch, a low pitch, or no sound during the same MLB as in Experiment 1. With this experiment, we also searched for an eventual interaction between the effect of sound presentation and the potential cognitive aftereffects of vertical PA on visual representation. Both Experiments 1 and 2 were constructed with the same design and conducted with two distinct groups of young healthy right-handed participants. First, we assessed the initial sensorimotor state with an open-loop pointing task, and the initial representational state through a vertical MLB (with addition of sound for Experiment 2). Then participants were submitted to a 16-minute PA procedure and were tested again on the open-loop pointing task and the MLB to assess the aftereffects following prism removal. Our results showed sensorimotor aftereffects following both upward and downward PA, in a direction opposed to the optical deviation used. The early aftereffects measured following PA were symmetrical, but at the end of the experiment the residual aftereffects were smaller following downward PA than upward PA. We also provide a new insight on the aftereffects of vertical PA on visuospatial representation, showing that downward PA (but not upward PA) can produce an upward bias on the manual line-bisection task. This is the first proof of such cognitive aftereffects following vertical PA. However, we found no effect of sound presentation on the vertical visual space representation and no interaction between PA and sound presentation.
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Affiliation(s)
- Vincent Ardonceau
- Inserm U1093 - CAPS, Université de Bourgogne, UFR des Sciences du Sport, Dijon, France.
| | | | | | - Cyril Sirandré
- Inserm U1093 - CAPS, Université de Bourgogne, UFR des Sciences du Sport, Dijon, France
| | - Carine Michel-Colent
- Inserm U1093 - CAPS, Université de Bourgogne, UFR des Sciences du Sport, Dijon, France
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Giustino V, Bonaventura RE, Messina G, Patti A, Pillitteri G, Pajaujiene S, Paoli A, Palma A, Bianco A, Oliveri M, Battaglia G. Acute effects of prismatic adaptation on penalty kick accuracy and postural control in young soccer players: A pilot study. Heliyon 2024; 10:e30515. [PMID: 38742074 PMCID: PMC11089356 DOI: 10.1016/j.heliyon.2024.e30515] [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] [Received: 11/11/2023] [Revised: 04/24/2024] [Accepted: 04/29/2024] [Indexed: 05/16/2024] Open
Abstract
Background Prismatic adaptation (PA) is a visuomotor technique using prismatic glasses that are capable of moving the visual field and to affect the excitability of certain brain areas. The aim of this pilot study was to explore potential acute effects of PA on penalty kick accuracy and postural control in youth soccer players. Methods In this randomized crossover study, seven young male soccer players performed three PA sessions (rightward PA, r-PA; leftward PA, l-PA; sham PA, s-PA) with a washout period of 1-week between them. Immediately before and after each PA session, penalty kick accuracy and postural control were assessed. Results We detected an increase in penalty kick accuracy following PA, regardless of the deviation side of the prismatic glasses (F1,5 = 52.15; p = 0.08; ηp2 = 0.981). In detail, our results showed an increase in the penalty kick accuracy toward the right target of the football goal following r-PA and toward the left target of the football goal following l-PA. We detected a significant effect on the sway path length (F2,12 = 10.42; p = 0.002; ηp2 = 0.635) and the sway average speed (F2,12 = 9.17; p = 0.004; ηp2 = 0.605) parameters in the stabilometric test with open eyes following PA, regardless of the deviation side of the prismatic glasses. In detail, our results showed a significant difference in both the stabilometric parameters (p = 0.016 and p = 0.009, respectively) only following l-PA. Conclusion The findings of this pilot study indicate that PA could positively affect penalty kick accuracy and postural control suggesting that PA could be used as a visual training technique in athletes.
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Affiliation(s)
- Valerio Giustino
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
| | | | - Giuseppe Messina
- Department of Human Sciences and Promotion of the Quality of Life, San Raffaele University, Rome, Italy
- PLab Research Institute, Palermo, Italy
| | - Antonino Patti
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
| | - Guglielmo Pillitteri
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
| | - Simona Pajaujiene
- Department of Coaching Science, Lithuanian Sports University, Kaunas, Lithuania
| | - Antonio Paoli
- Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - Antonio Palma
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
- Regional Sports School of Italian National Olympic Committee (CONI) Sicilia, Palermo, Italy
| | - Antonino Bianco
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
| | - Massimiliano Oliveri
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Giuseppe Battaglia
- Sport and Exercise Sciences Research Unit, Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
- Regional Sports School of Italian National Olympic Committee (CONI) Sicilia, Palermo, Italy
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Fleury L, Dreyer L, El Makkaoui R, Leroy E, Rossetti Y, Collet C. Inter-Task Transfer of Prism Adaptation through Motor Imagery. Brain Sci 2023; 13:brainsci13010114. [PMID: 36672095 PMCID: PMC9857236 DOI: 10.3390/brainsci13010114] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/30/2022] [Accepted: 01/04/2023] [Indexed: 01/10/2023] Open
Abstract
Prism adaptation (PA) is a useful method to investigate short-term sensorimotor plasticity. Following active exposure to prisms, individuals show consistent after-effects, probing that they have adapted to the perturbation. Whether after-effects are transferable to another task or remain specific to the task performed under exposure, represents a crucial interest to understand the adaptive processes at work. Motor imagery (MI, i.e., the mental representation of an action without any concomitant execution) offers an original opportunity to investigate the role of cognitive aspects of motor command preparation disregarding actual sensory and motor information related to its execution. The aim of the study was to test whether prism adaptation through MI led to transferable after-effects. Forty-four healthy volunteers were exposed to a rightward prismatic deviation while performing actual (Active group) versus imagined (MI group) pointing movements, or while being inactive (inactive group). Upon prisms removal, in the MI group, only participants with the highest MI abilities (MI+ group) showed consistent after-effects on pointing and, crucially, a significant transfer to throwing. This was not observed in participants with lower MI abilities and in the inactive group. However, a direct comparison of pointing after-effects and transfer to throwing between MI+ and the control inactive group did not show any significant difference. Although this interpretation requires caution, these findings suggest that exposure to intersensory conflict might be responsible for sensory realignment during prism adaptation which could be transferred to another task. This study paves the way for further investigations into MI's potential to develop robust sensorimotor adaptation.
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Affiliation(s)
- Lisa Fleury
- INSERM UMR-S U1028, CNRS UMS 5292, Trajectoires Lyon Neuroscience Research Center (CRNL), 69500 Bron, France. Claude Bernard University of Lyon 1, 69100 Villeurbanne, France
- Inter-University Laboratory of Human Movement Biology (EA 7424), Claude Bernard University of Lyon 1, 69100 Villeurbanne, France
- Defitech Chair of Clinical Neuroengineering, Neuro-X Institute (INX) and Brain Mind Institute (BMI), École Polytechnique Fédérale de Lausanne (EPFL) Valais, 1950 Sion, Switzerland
- Correspondence:
| | - Léa Dreyer
- Department of Psychology, University of Lyon 2, 69007 Lyon, France
| | - Rola El Makkaoui
- Department of Psychology, University of Lyon 2, 69007 Lyon, France
| | - Elise Leroy
- Department of Psychology, University of Lyon 2, 69007 Lyon, France
| | - Yves Rossetti
- INSERM UMR-S U1028, CNRS UMS 5292, Trajectoires Lyon Neuroscience Research Center (CRNL), 69500 Bron, France. Claude Bernard University of Lyon 1, 69100 Villeurbanne, France
- “Mouvement et Handicap” Platform, Neurological Hospital, Hospices Civils de Lyon, 69500 Bron, France
| | - Christian Collet
- Inter-University Laboratory of Human Movement Biology (EA 7424), Claude Bernard University of Lyon 1, 69100 Villeurbanne, France
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A registered re-examination of the effects of leftward prism adaptation on landmark judgements in healthy people. Cortex 2023; 158:139-157. [PMID: 36529083 DOI: 10.1016/j.cortex.2022.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/07/2022] [Accepted: 11/07/2022] [Indexed: 11/27/2022]
Abstract
It has long been known that active adaptation to a shift of the visual field, caused by laterally-displacing prisms, induces short-term sensorimotor aftereffects. More recent evidence suggests that prism adaptation may also stimulate higher-level changes in spatial cognition, which can modify the spatial biases of healthy people. The first reported, and most replicated, higher-level aftereffect is a rightward shift in the point of subjective equality (PSE) for a perceptual bisection task (the landmark task), following adaptation to leftward prisms. A recent meta-analysis suggests that this visuospatial aftereffect should be robustly induced by an extended period of adaptation to strong leftward prisms (15°, ∼26.8 prism dioptres). However, we have been unable to replicate this effect, suggesting that the effect size estimated from prior literature might be over-optimistic. This Registered Report compared visuospatial aftereffects on the landmark task for a 15° leftward prism adaptation group (n = 102) against a sham-adaptation control group (n = 102). The effect size for the comparison was Cohen's d = .27, 95% CI [-.01, .55], which did not pass the criterion set for significance. A Bayesian analysis indicated that the data were more than 4.1 times as likely under the null than under an informed experimental hypothesis. Exploratory analyses showed no evidence for a rightward shift of landmark judgements in the prism group considered alone, and no relationship between sensorimotor and visuospatial aftereffects. We further found no support for previous suggestions that visuospatial aftereffects are modulated by a person's baseline bias (leftward or rightward) for the landmark task. Null findings are also presented for a preliminary group of 62 participants adapted to 15° leftward prisms, and an additional group of 29 participants adapted to 10° leftward prisms. We do not rule out the possibility that leftward prisms might induce higher-level visuospatial aftereffects in healthy people, but we should be more sceptical about this claim.
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Clarke S, Farron N, Crottaz-Herbette S. Choosing Sides: Impact of Prismatic Adaptation on the Lateralization of the Attentional System. Front Psychol 2022; 13:909686. [PMID: 35814089 PMCID: PMC9260393 DOI: 10.3389/fpsyg.2022.909686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
Seminal studies revealed differences between the effect of adaptation to left- vs. right-deviating prisms (L-PA, R-PA) in normal subjects. Whereas L-PA leads to neglect-like shift in attention, demonstrated in numerous visuo-spatial and cognitive tasks, R-PA has only minor effects in specific aspects of a few tasks. The paucity of R-PA effects in normal subjects contrasts with the striking alleviation of neglect symptoms in patients with right hemispheric lesions. Current evidence from activation studies in normal subjects highlights the contribution of regions involved in visuo-motor control during prism exposure and a reorganization of spatial representations within the ventral attentional network (VAN) after the adaptation. The latter depends on the orientation of prisms used. R-PA leads to enhancement of the ipsilateral visual and auditory space within the left inferior parietal lobule (IPL), switching thus the dominance of VAN from the right to the left hemisphere. L-PA leads to enhancement of the ipsilateral space in right IPL, emphasizing thus the right hemispheric dominance of VAN. Similar reshaping has been demonstrated in patients. We propose here a model, which offers a parsimonious explanation of the effect of L-PA and R-PA both in normal subjects and in patients with hemispheric lesions. The model posits that prismatic adaptation induces instability in the synaptic organization of the visuo-motor system, which spreads to the VAN. The effect is lateralized, depending on the side of prism deviation. Successful pointing with prisms implies reaching into the space contralateral, and not ipsilateral, to the direction of prism deviation. Thus, in the hemisphere contralateral to prism deviation, reach-related neural activity decreases, leading to instability of the synaptic organization, which induces a reshuffling of spatial representations in IPL. Although reshuffled spatial representations in IPL may be functionally relevant, they are most likely less efficient than regular representations and may thus cause partial dysfunction. The former explains, e.g., the alleviation of neglect symptoms after R-PA in patients with right hemispheric lesions, the latter the occurrence of neglect-like symptoms in normal subjects after L-PA. Thus, opting for R- vs. L-PA means choosing the side of major IPL reshuffling, which leads to its partial dysfunction in normal subjects and to recruitment of alternative or enhanced spatial representations in patients with hemispheric lesions.
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Hugues A, Guinet-Lacoste A, Bin S, Villeneuve L, Lunven M, Pérennou D, Giraux P, Foncelle A, Rossetti Y, Jacquin-Courtois S, Luauté J, Rode G. Effects of prismatic adaptation on balance and postural disorders in patients with chronic right stroke: protocol for a multicentre double-blind randomised sham-controlled trial. BMJ Open 2021; 11:e052086. [PMID: 34819284 PMCID: PMC8614142 DOI: 10.1136/bmjopen-2021-052086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 10/21/2021] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Patients with right stroke lesion have postural and balance disorders, including weight-bearing asymmetry, more pronounced than patients with left stroke lesion. Spatial cognition disorders post-stroke, such as misperceptions of subjective straight-ahead and subjective longitudinal body axis, are suspected to be involved in these postural and balance disorders. Prismatic adaptation has showed beneficial effects to reduce visuomotor disorders but also an expansion of effects on cognitive functions, including spatial cognition. Preliminary studies with a low level of evidence have suggested positive effects of prismatic adaptation on weight-bearing asymmetry and balance after stroke. The objective is to investigate the effects of this intervention on balance but also on postural disorders, subjective straight-ahead, longitudinal body axis and autonomy in patients with chronic right stroke lesion. METHODS AND ANALYSIS In this multicentre randomised double-blind sham-controlled trial, we will include 28 patients aged from 18 to 80 years, with a first right supratentorial stroke lesion at chronic stage (≥12 months) and having a bearing ≥60% of body weight on the right lower limb. Participants will be randomly assigned to the experimental group (performing pointing tasks while wearing glasses shifting optical axis of 10 degrees towards the right side) or to the control group (performing the same procedure while wearing neutral glasses without optical deviation). All participants will receive a 20 min daily session for 2 weeks in addition to conventional rehabilitation. The primary outcome will be the balance measured using the Berg Balance Scale. Secondary outcomes will include weight-bearing asymmetry and parameters of body sway during static posturographic assessments, as well as lateropulsion (measured using the Scale for Contraversive Pushing), subjective straight-ahead, longitudinal body axis and autonomy (measured using the Barthel Index). ETHICS AND DISSEMINATION The study has been approved by the ethical review board in France. Findings will be submitted to peer-reviewed journals relative to rehabilitation or stroke. TRIAL REGISTRATION NUMBER NCT03154138.
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Affiliation(s)
- Aurélien Hugues
- Service de médecine physique et réadaptation, hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis Laval, France
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
- Plate-forme 'Mouvement et Handicap', hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France
| | - Amandine Guinet-Lacoste
- Service de médecine physique et réadaptation, hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis Laval, France
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
- Plate-forme 'Mouvement et Handicap', hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France
| | - Sylvie Bin
- Service de Recherche Clinique et Epidémiologique, Pôle de Santé Publique, Hospices Civils de Lyon, Lyon, France
| | - Laurent Villeneuve
- Service de Recherche Clinique et Epidémiologique, Pôle de Santé Publique, Hospices Civils de Lyon, Lyon, France
- EMR 3738, Université Lyon 1, Villeurbanne, France
| | - Marine Lunven
- Département d'Etudes Cognitives, École normale supérieure, PSL University, Paris, France
- Hôpital Henri Mondor-Albert Chenevier, Centre de référence Maladie de Huntington, Service de Neurologie, AP-HP, Créteil, France
- INSERM U955, Institut Mondor de Recherche Biomédicale, Equipe NeuroPsychologie Interventionnelle, Université Paris Est Créteil, Créteil, France
| | - Dominic Pérennou
- Département de médecine physique et de réadaptation, Institut de rééducation, Hôpital sud, Centre Hospitalier Universitaire Grenoble-Alpes, Grenoble, France
- Laboratoire Neurosciences Cognitives, CNRS UMR5105, Université Grenoble Alpes, Grenoble, France
| | - Pascal Giraux
- Service de médecine physique et réadaptation, Hôpital Bellevue, Centre Hospitalier Universitaire de Saint-Etienne, Saint-Etienne, France
- Laboratoire Inter-universitaire de Biologie de la Motricité (LIBM, EA 7424), Université Jean Monnet Saint-Etienne, Université de Lyon, Saint-Etienne, France
| | - Alexandre Foncelle
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
| | - Yves Rossetti
- Service de médecine physique et réadaptation, hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis Laval, France
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
- Plate-forme 'Mouvement et Handicap', hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France
| | - Sophie Jacquin-Courtois
- Service de médecine physique et réadaptation, hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis Laval, France
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
- Plate-forme 'Mouvement et Handicap', hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France
| | - Jacques Luauté
- Service de médecine physique et réadaptation, hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis Laval, France
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
- Plate-forme 'Mouvement et Handicap', hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France
| | - Gilles Rode
- Service de médecine physique et réadaptation, hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis Laval, France
- Equipe 'Trajectoires', Centre de Recherche en Neurosciences de Lyon, Inserm UMR-S 1028, CNRS UMR 5292, Université de Lyon, Université Lyon 1, Bron, France
- Plate-forme 'Mouvement et Handicap', hôpital Henry Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France
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Patients with lesions to the intraparietal cortex show greater proprioceptive realignment after prism adaptation: Evidence from open-loop pointing and manual straight ahead. Neuropsychologia 2021; 158:107913. [PMID: 34139246 DOI: 10.1016/j.neuropsychologia.2021.107913] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 04/27/2021] [Accepted: 06/08/2021] [Indexed: 11/21/2022]
Abstract
Reaching toward a target viewed through laterally refracting prisms results in adaptation of both visual and (limb) proprioceptive spatial representations. Common ways to measure adaptation after-effect are to ask a person to point straight ahead with their eyes closed ("manual straight ahead", MSA), or to a seen target using their unseen hand ("open-loop pointing", OLP). MSA measures changes in proprioception only, whereas OLP measures the combined visual and proprioceptive shift. The behavioural and neurological mechanisms of prism adaptation have come under scrutiny following reports of reduced hemispatial neglect in patients following this procedure. We present evidence suggesting that shifts in proprioceptive spatial representations induced by prism adaptation are larger following lesions to the intraparietal cortex - a brain region that integrates retinotopic visual signals with signals of eye position in the orbit and that is activated during prism adaptation. Six healthy participants and six patients with unilateral intraparietal cortex lesions underwent prism adaptation. After-effects were measured with OLP and MSA. After-effects of control participants were larger when measured with OLP than with MSA, consistent with previous research and with the additional contribution of visual shift to OLP after-effects. However, patients' OLP shifts were not significantly different to their MSA shifts. We conclude that, for the patients, correction of pointing errors during prism adaptation involved proportionally more changes to arm proprioception than for controls. Since lesions to intraparietal cortex led to enhanced realignment of arm proprioceptive representations, our results indirectly suggest that the intraparietal cortex could be key for visual realignment.
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Fleury L, Panico F, Foncelle A, Revol P, Delporte L, Jacquin-Courtois S, Collet C, Rossetti Y. Non-invasive brain stimulation shows possible cerebellar contribution in transfer of prism adaptation after-effects from pointing to throwing movements. Brain Cogn 2021; 151:105735. [PMID: 33945939 DOI: 10.1016/j.bandc.2021.105735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 11/27/2022]
Abstract
Whether sensorimotor adaptation can be generalized from one context to others represents a crucial interest in the field of neurological rehabilitation. Nonetheless, the mechanisms underlying transfer to another task remain unclear. Prism Adaptation (PA) is a useful method employed both to study short-term plasticity and for rehabilitation. Neuro-imaging and neuro-stimulation studies show that the cerebellum plays a substantial role in online control, strategic control (rapid error reduction), and realignment (after-effects) in PA. However, the contribution of the cerebellum to transfer is still unknown. The aim of this study was to test whether interfering with the activity of the cerebellum affected transfer of prism after-effects from a pointing to a throwing task. For this purpose, we delivered cathodal cerebellar transcranial Direct Current Stimulation (tDCS) to healthy participants during PA while a control group received cerebellar Sham Stimulation. We assessed longitudinal evolutions of pointing and throwing errors and pointing trajectories orientations during pre-tests, exposure and post-tests. Results revealed that participants who received active cerebellar stimulation showed (1) altered error reduction and pointing trajectories during the first trials of exposure; (2) increased magnitude but reduced robustness of pointing after-effects; and, crucially, (3) slightly altered transfer of after-effects to the throwing task. Therefore, the present study confirmed that cathodal cerebellar tDCS interferes with processes at work during PA and provides evidence for a possible contribution of the cerebellum in after-effects transfer.
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Affiliation(s)
- Lisa Fleury
- Lyon Neuroscience Research Center (CRNL), Trajectoires team, INSERM UMR-S U1028, CNRS UMS 5292, 69500 Bron, France; University of Claude, Bernard Lyon 1, 69100 Villeurbanne, France; Inter-University Laboratory of Human Movement Biology (LIBM), EA 7424, 69100 Villeurbanne, France
| | - Francesco Panico
- Department of Psychology, University of Campania "Luigi Vanvitelli", 81100 Caserta, Italy
| | - Alexandre Foncelle
- Lyon Neuroscience Research Center (CRNL), Trajectoires team, INSERM UMR-S U1028, CNRS UMS 5292, 69500 Bron, France
| | - Patrice Revol
- Lyon Neuroscience Research Center (CRNL), Trajectoires team, INSERM UMR-S U1028, CNRS UMS 5292, 69500 Bron, France; "Mouvement et Handicap" platform, Hôpital Henry Gabrielle & Hôpital Neurologique, Hospices Civils de Lyon, 69500 Bron, France
| | - Ludovic Delporte
- Lyon Neuroscience Research Center (CRNL), Trajectoires team, INSERM UMR-S U1028, CNRS UMS 5292, 69500 Bron, France; "Mouvement et Handicap" platform, Hôpital Henry Gabrielle & Hôpital Neurologique, Hospices Civils de Lyon, 69500 Bron, France
| | - Sophie Jacquin-Courtois
- Lyon Neuroscience Research Center (CRNL), Trajectoires team, INSERM UMR-S U1028, CNRS UMS 5292, 69500 Bron, France; "Mouvement et Handicap" platform, Hôpital Henry Gabrielle & Hôpital Neurologique, Hospices Civils de Lyon, 69500 Bron, France
| | - Christian Collet
- University of Claude, Bernard Lyon 1, 69100 Villeurbanne, France; Inter-University Laboratory of Human Movement Biology (LIBM), EA 7424, 69100 Villeurbanne, France
| | - Yves Rossetti
- Lyon Neuroscience Research Center (CRNL), Trajectoires team, INSERM UMR-S U1028, CNRS UMS 5292, 69500 Bron, France; "Mouvement et Handicap" platform, Hôpital Henry Gabrielle & Hôpital Neurologique, Hospices Civils de Lyon, 69500 Bron, France
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10
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Opposing force fields induce direction-specific sensorimotor adaptation but a non-specific perceptual shift consistent with a contraction of peripersonal space representation. Exp Brain Res 2020; 239:31-46. [PMID: 33097985 DOI: 10.1007/s00221-020-05945-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 10/06/2020] [Indexed: 10/23/2022]
Abstract
Most of our daily interactions with objects occur in the space immediately surrounding the body, i.e. the peripersonal space. The peripersonal space is characterized by multisensory processing of objects which are coded in terms of potential actions, specifying for instance whether objects are within reach or not. Our recent work suggested a link between exposure to a new force field, which changed the effector dynamics, and the representation of peripersonal space. To better understand the interplay between the plasticity of the motor system and peripersonal space representation, the present study examined whether changing the direction of the force field specifically modified the perception of action boundaries. Participants seated at the centre of an experimental platform estimated visual targets' reachability before and after adapting upper-limb reaching movements to the Coriolis force generated by either clockwise or counter clockwise rotation of the platform (120°/s). Opposite spatial after-effects were observed, showing that force-field adaptation depends on the direction of the rotation. In contrast, perceived action boundaries shifted leftward following exposure to the new force field, regardless of the direction of the rotation. Overall, these findings support the idea that abrupt exposure to a new force field results in a direction-specific updating of the central sensorimotor representations underlying the control of arm movements. Abrupt exposure to a new force field also results in a nonspecific shift in the perception of action boundaries, which is consistent with a contraction of the peripersonal space. Such effect, which does not appear to be related to state anxiety, could be related to the protective role of the peripersonal space in response to the uncertainty of the sensorimotor system induced by the abrupt modification of the environment.
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11
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Prablanc C, Panico F, Fleury L, Pisella L, Nijboer T, Kitazawa S, Rossetti Y. Adapting terminology: clarifying prism adaptation vocabulary, concepts, and methods. Neurosci Res 2020; 153:8-21. [DOI: 10.1016/j.neures.2019.03.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 02/22/2019] [Accepted: 03/18/2019] [Indexed: 11/16/2022]
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12
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Fleury L, Pastor D, Revol P, Delporte L, Rossetti Y. Inter-task transfer of prism adaptation depends on exposed task mastery. Sci Rep 2020; 10:5687. [PMID: 32231235 PMCID: PMC7105469 DOI: 10.1038/s41598-020-62519-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 03/05/2020] [Indexed: 11/17/2022] Open
Abstract
The sensorimotor system sets up plastic alterations to face new demands. Terms such as adaptation and learning are broadly used to describe a variety of processes underlying this aptitude. The mechanisms whereby transformations acquired to face a perturbation generalize to other situations or stay context-dependent remain weakly understood. Here, we compared the performance of hand pointing vs throwing to visual targets while facing an optical shift of the visual field (prismatic deviation). We found that the transfer of compensations was conditioned by the task performed during exposure to the perturbation: compensations transferred from pointing to throwing but not at all from throwing to pointing. Additionally, expertise on the task performed during exposure had a marked influence on the amount of transfer to the non-exposed task: throwing experts (dart players) remarkably transferred compensations to the pointing task. Our results reveal that different processes underlying these distinct transfer properties may be at work to face a given perturbation. Their solicitation depends on mastery for the exposed task, which is responsible for different patterns of inter-task transfer. An important implication is that transfer properties, and not only after-effects, should be included as a criterion for adaptation. At the theoretical level, we suggest that tasks may need to be mastered before they can be subjected to adaptation, which has new implications for the distinction between learning and adaptation.
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Affiliation(s)
- Lisa Fleury
- INSERM U1028 CNRS UMR 5292, ImpAct Team, Lyon Neuroscience Research Center (CRNL), 69500, Bron, France. .,"Mouvement et Handicap" platform, Neurological Hospital, Hospices Civils de Lyon, 69500, Bron, France. .,Claude Bernard University of Lyon 1, 69100, Villeurbanne, France.
| | - Damien Pastor
- INSERM U1028 CNRS UMR 5292, ImpAct Team, Lyon Neuroscience Research Center (CRNL), 69500, Bron, France
| | - Patrice Revol
- INSERM U1028 CNRS UMR 5292, ImpAct Team, Lyon Neuroscience Research Center (CRNL), 69500, Bron, France.,"Mouvement et Handicap" platform, Neurological Hospital, Hospices Civils de Lyon, 69500, Bron, France
| | - Ludovic Delporte
- INSERM U1028 CNRS UMR 5292, ImpAct Team, Lyon Neuroscience Research Center (CRNL), 69500, Bron, France.,"Mouvement et Handicap" platform, Neurological Hospital, Hospices Civils de Lyon, 69500, Bron, France
| | - Yves Rossetti
- INSERM U1028 CNRS UMR 5292, ImpAct Team, Lyon Neuroscience Research Center (CRNL), 69500, Bron, France.,"Mouvement et Handicap" platform, Neurological Hospital, Hospices Civils de Lyon, 69500, Bron, France.,Claude Bernard University of Lyon 1, 69100, Villeurbanne, France
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13
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On the mechanisms underlying Prism Adaptation: A review of neuro-imaging and neuro-stimulation studies. Cortex 2020; 123:57-71. [DOI: 10.1016/j.cortex.2019.10.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 09/19/2019] [Accepted: 10/16/2019] [Indexed: 01/09/2023]
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14
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Revol P, Touil N, Havé L, Rode G, Jacquin-Courtois S, Rossetti Y. Prisms adaptation improves haptic object discrimination in hemispatial neglect. Cortex 2019; 123:152-161. [PMID: 31790943 DOI: 10.1016/j.cortex.2019.10.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 01/25/2019] [Accepted: 10/14/2019] [Indexed: 10/25/2022]
Abstract
Neglect manifestations are typically explored in the visual modality. Although they are less commonly investigated tactile deficits also exist, and the aim of this study was to explore neglect in this modality. A haptic object discrimination task was designed to assess whether or not shape perception is impaired in seven right brain damaged patients with or without neglect. Each patient's performance on the object discrimination task was assessed before and after a brief period of prism adaptation, a bottom-up rehabilitation technique known to improve neglect symptoms. The results suggest that a haptic deficit - in the form of substantially more left errors - is present only in patients with neglect. Following prism adaptation, the left bias error rates in neglect patients were substantially reduced, and were similar to those observed in patients without neglect. Moreover, the haptic processing of the right side of objects also improved slightly. This finding suggests an expansion of the effects of prism adaptation to the unexposed, tactile modality supporting the cross-modal central effect hypothesis.
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Affiliation(s)
- Patrice Revol
- Plate-forme 'Mouvement et Handicap', Hôpital Henry-Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France; Inserm UMR-S 1028, CNRS UMR 5292, ImpAct, Centre de Recherche en Neurosciences de Lyon, Université Lyon-1, Bron, France.
| | - Nathalie Touil
- Inserm UMR-S 1028, CNRS UMR 5292, ImpAct, Centre de Recherche en Neurosciences de Lyon, Université Lyon-1, Bron, France
| | | | - Gilles Rode
- Inserm UMR-S 1028, CNRS UMR 5292, ImpAct, Centre de Recherche en Neurosciences de Lyon, Université Lyon-1, Bron, France
| | - Sophie Jacquin-Courtois
- Service de Rééducation Neurologique, Hôpital Henry Gabrielle, Hospices Civils de Lyon et Université Claude Bernard, Lyon, France
| | - Yves Rossetti
- Plate-forme 'Mouvement et Handicap', Hôpital Henry-Gabrielle, Hospices Civils de Lyon, Saint-Genis-Laval, France; Inserm UMR-S 1028, CNRS UMR 5292, ImpAct, Centre de Recherche en Neurosciences de Lyon, Université Lyon-1, Bron, France
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15
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Facchin A, Folegatti A, Rossetti Y, Farnè A. The half of the story we did not know about prism adaptation. Cortex 2019; 119:141-157. [DOI: 10.1016/j.cortex.2019.04.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 01/21/2019] [Accepted: 04/24/2019] [Indexed: 10/26/2022]
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16
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The Effect of a Virtual-Reality Full-Body Illusion on Body Representation in Obesity. J Clin Med 2019; 8:jcm8091330. [PMID: 31466376 PMCID: PMC6780081 DOI: 10.3390/jcm8091330] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/21/2019] [Accepted: 08/22/2019] [Indexed: 11/26/2022] Open
Abstract
Background. The effective illusory ownership over an artificial body in modulating body representations in healthy and eating disorders population has been repeatedly reported in recent literature. In this study, we extended this research in the field of obesity: specifically, we investigated whether ownership over a virtual body with a skinny abdomen might be successfully experienced by participants affected by obesity. Methods. Fifteen participants with obesity and fifteen healthy-weight participants took part at this study in which the VR-Full-Body Illusion was adopted. The strength of illusion was investigated through the traditional Embodiment Questionnaire, while changes in bodily experience were measured through a body size estimation task. Results. Participants with obesity as well as healthy-weight participants reported to experience the illusion. About the body size estimation task, both groups reported changes only in the estimation of the abdomen’s circumference after the experimental condition, in absence of any another difference. Discussion. Participants with obesity reported to experience the illusion over a skinny avatar, but the modulation of the bodily experience seems controversial. Future lines of research exploiting this technique for modulating body representations in obesity, specifically in terms of potential therapeutic use, were discussed.
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17
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The effect of prism adaptation on state estimates of eye position in the orbit. Cortex 2019; 115:246-263. [DOI: 10.1016/j.cortex.2019.02.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 10/10/2018] [Accepted: 02/07/2019] [Indexed: 11/23/2022]
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18
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19
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McIntosh RD, Brown BM, Young L. Meta-analysis of the visuospatial aftereffects of prism adaptation, with two novel experiments. Cortex 2019; 111:256-273. [DOI: 10.1016/j.cortex.2018.11.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/07/2018] [Accepted: 11/07/2018] [Indexed: 02/07/2023]
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20
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Gaveau V, Priot AE, Pisella L, Havé L, Prablanc C, Rossetti Y. Paradoxical adaptation of successful movements: The crucial role of internal error signals. Conscious Cogn 2018; 64:135-145. [DOI: 10.1016/j.concog.2018.06.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 06/11/2018] [Accepted: 06/11/2018] [Indexed: 11/28/2022]
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21
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Michel C, Bonnetain L, Amoura S, White O. Force field adaptation does not alter space representation. Sci Rep 2018; 8:10982. [PMID: 30030482 PMCID: PMC6054688 DOI: 10.1038/s41598-018-29283-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 07/06/2018] [Indexed: 11/20/2022] Open
Abstract
Prism adaptation is a well-known model to study sensorimotor adaptive processes. It has been shown that following prism exposure, after-effects are not only restricted to the sensorimotor level but extend as well to spatial cognition. The main purpose of the present study was to investigate in healthy individuals whether expansion to spatial cognition is restricted to adaptive processes peculiar to prism adaptation or whether it occurs as well following other forms of adaptive process such as adaptation to a novel dynamic environment during pointing movements. Representational after-effects were assessed by the perceptual line bisection task before and after adaptation to a leftward or a rightward force field. The main results showed that adaptation developed at sensorimotor level but did not influence space representation. Our results have therefore a strong methodological impact for prospective investigations focusing on sensorimotor plasticity while sparing space cognition. These methodological considerations will be particulary relevant when addressing sensorimotor plasticity in patients with specific representational feature to preserve. The discussion highlights the differences between prism and dynamic adaptation that could explain the lack of after-effect on space representation following force field adaptation.
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Affiliation(s)
- Carine Michel
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences du Sport, F-21000, Dijon, France.
| | - Lucie Bonnetain
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences du Sport, F-21000, Dijon, France
| | - Sarah Amoura
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences du Sport, F-21000, Dijon, France
| | - Olivier White
- INSERM UMR1093-CAPS, Université Bourgogne Franche-Comté, UFR des Sciences du Sport, F-21000, Dijon, France
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22
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Facchin A, Bultitude JH, Mornati G, Peverelli M, Daini R. A comparison of prism adaptation with terminal versus concurrent exposure on sensorimotor changes and spatial neglect. Neuropsychol Rehabil 2018; 30:613-640. [DOI: 10.1080/09602011.2018.1484374] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Alessio Facchin
- Department of Psychology, University of Milano-Bicocca, Milano, Italy
- Milan Centre for Neuroscience, Milano, Italy
- Centre of Research in Optics and Optometry, University of Milano-Bicocca (COMiB), Milano, Italy
- Institute of Research and Studies in Optics and Optometry, Vinci, Italy
| | | | - Giulia Mornati
- Scientific Institute IRCCS Eugenio Medea, Bosisio Parini, Lecco, Italy
| | - Milena Peverelli
- Valduce Hospital Rehabilitation Center Villa Beretta, Costamasnaga, Italy
| | - Roberta Daini
- Department of Psychology, University of Milano-Bicocca, Milano, Italy
- Milan Centre for Neuroscience, Milano, Italy
- Centre of Research in Optics and Optometry, University of Milano-Bicocca (COMiB), Milano, Italy
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23
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Calzolari E, Albini F, Bolognini N, Vallar G. Multisensory and Modality-Specific Influences on Adaptation to Optical Prisms. Front Hum Neurosci 2017; 11:568. [PMID: 29213233 PMCID: PMC5702769 DOI: 10.3389/fnhum.2017.00568] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 11/09/2017] [Indexed: 11/30/2022] Open
Abstract
Visuo-motor adaptation to optical prisms displacing the visual scene (prism adaptation, PA) is a method used for investigating visuo-motor plasticity in healthy individuals and, in clinical settings, for the rehabilitation of unilateral spatial neglect. In the standard paradigm, the adaptation phase involves repeated pointings to visual targets, while wearing optical prisms displacing the visual scene laterally. Here we explored differences in PA, and its aftereffects (AEs), as related to the sensory modality of the target. Visual, auditory, and multisensory - audio-visual - targets in the adaptation phase were used, while participants wore prisms displacing the visual field rightward by 10°. Proprioceptive, visual, visual-proprioceptive, auditory-proprioceptive straight-ahead shifts were measured. Pointing to auditory and to audio-visual targets in the adaptation phase produces proprioceptive, visual-proprioceptive, and auditory-proprioceptive AEs, as the typical visual targets did. This finding reveals that cross-modal plasticity effects involve both the auditory and the visual modality, and their interactions (Experiment 1). Even a shortened PA phase, requiring only 24 pointings to visual and audio-visual targets (Experiment 2), is sufficient to bring about AEs, as compared to the standard 92-pointings procedure. Finally, pointings to auditory targets cause AEs, although PA with a reduced number of pointings (24) to auditory targets brings about smaller AEs, as compared to the 92-pointings procedure (Experiment 3). Together, results from the three experiments extend to the auditory modality the sensorimotor plasticity underlying the typical AEs produced by PA to visual targets. Importantly, PA to auditory targets appears characterized by less accurate pointings and error correction, suggesting that the auditory component of the PA process may be less central to the building up of the AEs, than the sensorimotor pointing activity per se. These findings highlight both the effectiveness of a reduced number of pointings for bringing about AEs, and the possibility of inducing PA with auditory targets, which may be used as a compensatory route in patients with visual deficits.
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Affiliation(s)
- Elena Calzolari
- Department of Psychology and NeuroMI, University of Milano-Bicocca, Milan, Italy
- Neuro-Otology Unit, Division of Brain Sciences, Imperial College London, London, United Kingdom
| | - Federica Albini
- Department of Psychology and NeuroMI, University of Milano-Bicocca, Milan, Italy
| | - Nadia Bolognini
- Department of Psychology and NeuroMI, University of Milano-Bicocca, Milan, Italy
- Neuropsychological Laboratory, Istituto Auxologico Italiano, Istituto di Ricovero e Cura a Carattere Scientifico, Milan, Italy
| | - Giuseppe Vallar
- Department of Psychology and NeuroMI, University of Milano-Bicocca, Milan, Italy
- Neuropsychological Laboratory, Istituto Auxologico Italiano, Istituto di Ricovero e Cura a Carattere Scientifico, Milan, Italy
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24
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Prism adaptation speeds reach initiation in the direction of the prism after-effect. Exp Brain Res 2017; 235:3193-3206. [DOI: 10.1007/s00221-017-5038-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
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25
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Ronga I, Sarasso P, Raineri F, Duhamel JR, Becchio C, Neppi-Modona M. Leftward oculomotor prismatic training induces a rightward bias in normal subjects. Exp Brain Res 2017; 235:1759-1770. [DOI: 10.1007/s00221-017-4934-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 02/27/2017] [Indexed: 11/30/2022]
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26
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Studying the neural bases of prism adaptation using fMRI: A technical and design challenge. Behav Res Methods 2016; 49:2031-2043. [DOI: 10.3758/s13428-016-0840-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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27
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Gallace A, Auvray M, Spence C. The Modulation of Haptic Line Bisection by a Visual Illusion and Optokinetic Stimulation. Perception 2016; 36:1003-18. [PMID: 17844966 DOI: 10.1068/p5457] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Research has shown that a variety of different sensory manipulations, including visual illusions, transcutaneous nerve stimulation, vestibular caloric stimulation, optokinetic stimulation, and prism adaptation, can all influence people's performance on spatial tasks such as line bisection. It has been suggested that these manipulations may act upon the ‘higher-order’ levels of representation used to code spatial information. We investigated whether we could influence haptic line bisection in normal participants crossmodally by varying the visual background that participants viewed. In experiment 1, participants haptically bisected wooden rods while looking at a variant of the Oppel–Kundt visual illusion. Haptic-bisection judgments were influenced by the orientation of the visual illusion (in line with previous unimodal visual findings). In experiment 2, haptic-bisection judgments were also influenced by the presence of a leftward or rightward moving visual background. In experiments 3 and 4, the position of the to-be-bisected stimuli was varied with respect to the participant's body midline. The results confirmed an effect of optokinetic stimulation, but not of the Oppel–Kundt illusion, on participants' tactile-bisection errors, suggesting that the two manipulations might differentially affect haptic processing. Taken together, these results suggest that the ‘higher-order’ levels of spatial representation upon which perceptual judgments and/or motor responses are made may have multisensory or amodal characteristics.
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Affiliation(s)
- Alberto Gallace
- Department of Experimental Psychology, University of Oxford, South Parks Road, Oxford OX1 3UD, UK.
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28
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Prism Adaptation Alters Electrophysiological Markers of Attentional Processes in the Healthy Brain. J Neurosci 2016; 36:1019-30. [PMID: 26791229 DOI: 10.1523/jneurosci.1153-15.2016] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Neglect patients typically show a rightward attentional orienting bias and a strong disengagement deficit, such that they are especially slow in responding to left-sided targets after right-sided cues (Posner et al., 1984). Prism adaptation (PA) can reduce diverse debilitating neglect symptoms and it has been hypothesized that PA's effects are so generalized that they might be mediated by attentional mechanisms (Pisella et al., 2006; Redding and Wallace, 2006). In neglect patients, performance on spatial attention tasks improves after rightward-deviating PA (Jacquin-Courtois et al., 2013). In contrast, in healthy subjects, although there is evidence that leftward-deviating PA induces neglect-like performance on some visuospatial tasks, behavioral studies of spatial attention tasks have mostly yielded negative results (Morris et al., 2004; Bultitude et al., 2013). We hypothesized that these negative behavioral findings might reflect the limitations of behavioral measures in healthy subjects. Here we exploited the sensitivity of event-related potentials to test the hypothesis that electrophysiological markers of attentional processes in the healthy human brain are affected by PA. Leftward-deviating PA generated asymmetries in attentional orienting (reflected in the cue-locked N1) and in attentional disengagement for invalidly cued left targets (reflected in the target-locked P1). This is the first electrophysiological demonstration that leftward-deviating PA in healthy subjects mimics attentional patterns typically seen in neglect patients. Significance statement: Prism adaptation (PA) is a promising tool for ameliorating many deficits in neglect patients and inducing neglect-like behavior in healthy subjects. The mechanisms underlying PA's effects are poorly understood but one hypothesis suggests that it acts by modulating attention. To date, however, there has been no successful demonstration of attentional modulation in healthy subjects. We provide the first electrophysiological evidence that PA acts on attention in healthy subjects by mimicking the attentional pattern typically reported in neglect patients: both a rightward attentional orienting bias (reflected in the cue-locked N1) and a deficit in attentional disengagement from the right hemispace (reflected in the target-locked P1). This study makes an important contribution to refining current models of the mechanisms underlying PA's cognitive effects.
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29
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Prism adaptation magnitude has differential influences on perceptual versus manual responses. Exp Brain Res 2016; 234:2761-72. [DOI: 10.1007/s00221-016-4678-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 05/13/2016] [Indexed: 11/25/2022]
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30
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Torta DM, Tatu MK, Cotroneo D, Alamia A, Folegatti A, Trojan J. Prism adaptation contrasts perceptual habituation for repetitive somatosensory stimuli. Acta Psychol (Amst) 2016; 165:24-33. [PMID: 26896790 DOI: 10.1016/j.actpsy.2016.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 11/24/2015] [Accepted: 01/19/2016] [Indexed: 11/28/2022] Open
Abstract
Prism adaptation (PA) is a non-invasive procedure that requires performing a visuo-motor pointing task while wearing prism goggles inducing a visual displacement of the pointed target. This procedure involves a reorganization of sensorimotor coordination, and induces long-lasting effects on numerous higher-order cognitive functions in healthy volunteers and neglect patients. Prismatic displacement (PD) of the visual field can be induced when prisms are worn but no sensorimotor task is required. In this case, it is unlikely that any subsequent reorganization takes place. The effects of PD are short-lived in the sense that they last as long as prisms are worn. In this study we aimed, to the best of our knowledge for the first time, at investigating whether PA and PD induce changes in the perception of intensity of nociceptive and non- nociceptive somatosensory stimuli. We induced, in healthy volunteers, PD (experiment 1), or PA (experiment 2) and asked participants to rate the intensity of the stimuli applied to the hand undergoing the visuo-proprioceptive conflict (experiment 1) or adaptation (experiment 2). Our results indicate that: 1) the visuo-proprioceptive conflict induced by PD does not reduce the perceived intensity of the stimuli, 2) PA prevents perceptual habituation for both nociceptive and non-nociceptive somatosensory stimuli. Moreover, to investigate the possible underlying mechanisms of the effects of PA we conducted a third experiment in which stimuli were applied both at the adapted and the non-adapted hand. In line with the results of experiment 2, we found that perceptual habituation was prevented for stimuli applied onto the adapted hand. Moreover, we observed the same finding for stimuli applied onto the non-adapted hand. This result suggests that the detention of habituation is not merely driven by changes in spatial attention allocation. Taken together, these data indicate that prisms can affect the perceived intensity of somatosensory stimuli, but only when PA is induced.
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Affiliation(s)
- D M Torta
- Department of Psychology, University of Turin, Italy; Institute of Neuroscience, IoNS, Université catholique de Louvain, Brussels, Belgium.
| | - M K Tatu
- Department of Psychology, University of Turin, Italy; Institute of Neuroscience, IoNS, Université catholique de Louvain, Brussels, Belgium
| | - D Cotroneo
- Department of Psychology, University of Turin, Italy
| | - A Alamia
- Institute of Neuroscience, IoNS, Université catholique de Louvain, Brussels, Belgium
| | - A Folegatti
- Department of Psychology, University of Turin, Italy
| | - J Trojan
- Department of Psychology, University of Koblenz-Landau, Germany
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31
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Michel C. Beyond the Sensorimotor Plasticity: Cognitive Expansion of Prism Adaptation in Healthy Individuals. Front Psychol 2016; 6:1979. [PMID: 26779088 PMCID: PMC4700133 DOI: 10.3389/fpsyg.2015.01979] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 12/10/2015] [Indexed: 11/13/2022] Open
Abstract
Sensorimotor plasticity allows us to maintain an efficient motor behavior in reaction to environmental changes. One of the classical models for the study of sensorimotor plasticity is prism adaptation. It consists of pointing to visual targets while wearing prismatic lenses that shift the visual field laterally. The conditions of the development of the plasticity and the sensorimotor after-effects have been extensively studied for more than a century. However, the interest taken in this phenomenon was considerably increased since the demonstration of neglect rehabilitation following prism adaptation by Rossetti et al. (1998). Mirror effects, i.e., simulation of neglect in healthy individuals, were observed for the first time by Colent et al. (2000). The present review focuses on the expansion of prism adaptation to cognitive functions in healthy individuals during the last 15 years. Cognitive after-effects have been shown in numerous tasks even in those that are not intrinsically spatial in nature. Altogether, these results suggest the existence of a strong link between low-level sensorimotor plasticity and high-level cognitive functions and raise important questions about the mechanisms involved in producing unexpected cognitive effects following prism adaptation. Implications for the functional mechanisms and neuroanatomical network of prism adaptation are discussed to explain how sensorimotor plasticity may affect cognitive processes.
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Affiliation(s)
- Carine Michel
- Unité de Formation et de Recherche en Sciences et Techniques des Activités Physiques et Sportives, Campus Universitaire, Université de BourgogneDijon, France
- INSERM, U 1093, Cognition, Action et Plasticité SensorimotriceDijon, France
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Calzolari E, Gallace A, Moseley GL, Vallar G. Effect of prism adaptation on thermoregulatory control in humans. Behav Brain Res 2016; 296:339-350. [DOI: 10.1016/j.bbr.2015.08.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/25/2015] [Accepted: 08/27/2015] [Indexed: 11/24/2022]
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Effets sensori-moteurs et fonctionnels à long terme d’un traitement hebdomadaire par adaptation prismatique dans la négligence : un essai randomisé et contrôlé en double insu. Ann Phys Rehabil Med 2015. [DOI: 10.1016/j.rehab.2015.01.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Rode G, Lacour S, Jacquin-Courtois S, Pisella L, Michel C, Revol P, Alahyane N, Luauté J, Gallagher S, Halligan P, Pélisson D, Rossetti Y. Long-term sensorimotor and therapeutical effects of a mild regime of prism adaptation in spatial neglect. A double-blind RCT essay. Ann Phys Rehabil Med 2015; 58:40-53. [DOI: 10.1016/j.rehab.2014.10.004] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Revised: 10/03/2014] [Accepted: 10/10/2014] [Indexed: 11/28/2022]
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Michel C, Cruz R. Prism adaptation power on spatial cognition: adaptation to different optical deviations in healthy individuals. Neurosci Lett 2015; 590:145-9. [PMID: 25660233 DOI: 10.1016/j.neulet.2015.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 01/13/2015] [Accepted: 02/01/2015] [Indexed: 10/24/2022]
Abstract
The main objective of the present study was to determine the minimal optical deviation responsible for cognitive after-effects in healthy individuals and to explore whether there was a relationship between the degree of optical deviation and cognitive after-effects. Therefore different leftward optical deviations (8°, 10° and 15°) were used in three different groups of healthy participants. Sensorimotor after-effects (evaluating the visuo-manual realignment) were assessed using an open-loop pointing task and cognitive after-effects (evaluating changes in spatial representation) were assessed using manual and perceptual (landmark) line bisection tasks. Results revealed that exposure to 8°, 10° and 15° optical shifts produced sensorimotor after-effects. In contrast, the occurrence of cognitive after-effects depended on the optical deviation. Adaptation to an 8° leftward optical deviation did not produce cognitive after-effects. Adaptation to a 10° leftward optical deviation was responsible for after-effects in the manual line bisection task only. Adaptation to a 15° leftward optical deviation produced after-effects in both the manual and perceptual line bisection tasks. All cognitive after-effects were rightward and were similar to mild, neglect-like manifestations. Both sensorimotor and cognitive after-effects were correlated with the degree of optical deviation. Our results are of methodological and theoretical interest to those interested in sensorimotor plasticity and spatial cognition.
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Affiliation(s)
- Carine Michel
- Université de Bourgogne, BP 27877, F-21078 Dijon, France; INSERM, U 1093, Cognition, Action et Plasticité Sensorimotrice, Dijon, F-21078, France.
| | - Remy Cruz
- Université de Bourgogne, BP 27877, F-21078 Dijon, France; INSERM, U 1093, Cognition, Action et Plasticité Sensorimotrice, Dijon, F-21078, France
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Abstract
Prismatic adaptation has been shown to induce a realignment of visuoproprioceptive representations and to involve parietocerebellar networks. We have investigated in humans how far other types of functions known to involve the parietal cortex are influenced by a brief exposure to prismatic adaptation. Normal subjects underwent an fMRI evaluation before and after a brief session of prismatic adaptation using rightward deviating prisms for one group or after an equivalent session using plain glasses for the other group. Activation patterns to three tasks were analyzed: (1) visual detection; (2) visuospatial short-term memory; and (3) verbal short-term memory. The prismatic adaptation-related changes were found bilaterally in the inferior parietal lobule when prisms, but not plain glasses, were used. This effect was driven by selective changes during the visual detection task: an increase in neural activity was induced on the left and a decrease on the right parietal side after prismatic adaptation. Comparison of activation patterns after prismatic adaptation on the visual detection task demonstrated a significant increase of the ipsilateral field representation in the left inferior parietal lobule and a significant decrease in the right inferior parietal lobule. In conclusion, a brief exposure to prismatic adaptation modulates differently left and right parietal activation during visual detection but not during short-term memory. Furthermore, the visuospatial representation within the inferior parietal lobule changes, with a decrease of the ipsilateral hemifield representation on the right and increase on the left side, suggesting thus a left hemispheric dominance.
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Reed SA, Dassonville P. Adaptation to leftward-shifting prisms enhances local processing in healthy individuals. Neuropsychologia 2014; 56:418-27. [PMID: 24560913 DOI: 10.1016/j.neuropsychologia.2014.02.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 01/21/2014] [Accepted: 02/12/2014] [Indexed: 01/01/2023]
Abstract
In healthy individuals, adaptation to left-shifting prisms has been shown to simulate the symptoms of hemispatial neglect, including a reduction in global processing that approximates the local bias observed in neglect patients. The current study tested whether leftward prism adaptation can more specifically enhance local processing abilities. In three experiments, the impact of local and global processing was assessed through tasks that measure susceptibility to illusions that are known to be driven by local or global contextual effects. Susceptibility to the rod-and-frame illusion - an illusion disproportionately driven by both local and global effects depending on frame size - was measured before and after adaptation to left- and right-shifting prisms. A significant increase in rod-and-frame susceptibility was found for the left-shifting prism group, suggesting that adaptation caused an increase in local processing effects. The results of a second experiment confirmed that leftward prism adaptation enhances local processing, as assessed with susceptibility to the simultaneous-tilt illusion. A final experiment employed a more specific measure of the global effect typically associated with the rod-and-frame illusion, and found that although the global effect was somewhat diminished after leftward prism adaptation, the trend failed to reach significance (p=.078). Rightward prism adaptation had no significant effects on performance in any of the experiments. Combined, these findings indicate that leftward prism adaptation in healthy individuals can simulate the local processing bias of neglect patients primarily through an increased sensitivity to local visual cues, and confirm that prism adaptation not only modulates lateral shifts of attention, but also prompts shifts from one level of processing to another.
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Affiliation(s)
- Scott A Reed
- Department of Psychology and Institute of Neuroscience, 1227 University of Oregon, Eugene, OR 97403, USA
| | - Paul Dassonville
- Department of Psychology and Institute of Neuroscience, 1227 University of Oregon, Eugene, OR 97403, USA.
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Schintu S, Pisella L, Jacobs S, Salemme R, Reilly KT, Farnè A. Prism adaptation in the healthy brain: the shift in line bisection judgments is long lasting and fluctuates. Neuropsychologia 2013; 53:165-70. [PMID: 24291512 DOI: 10.1016/j.neuropsychologia.2013.11.013] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 10/30/2013] [Accepted: 11/20/2013] [Indexed: 11/30/2022]
Abstract
Rightward prism adaptation has been shown to ameliorate visuospatial biases in right brain-damaged patients with neglect, and a single session of prism adaptation can lead to improvements that last up to several hours. Leftward prism adaptation in neurologically healthy individuals induces neglect-like biases in visuospatial tasks. The duration of these effects in healthy individuals, typically assumed to be ephemeral, has never been investigated. Here we assessed the time-course of the adaptation-induced modifications in a classical perceptual line bisection task that was repeatedly administered for approximately 40min after a single session of adaptation to either a leftward or rightward prismatic deviation. Consistent with previous reports, only adaptation to leftward-deviating prisms induced a visuospatial shift on perceptual line bisection judgments. The typical pattern of pseudoneglect was counteracted by a rightward shift in midline judgments, which became significant between 5 and 10 min after adaptation, fluctuated between being significant or not several times in the 40 min following adaptation, and was present as late as 35 min. In contrast, the sensorimotor aftereffect was present immediately after adaptation to both rightward and leftward deviating prisms, decayed initially then remained stable until 40 min. These results demonstrate that both the sensorimotor and visuospatial effects last for at least 35 min, but that the visuospatial shift needs time to fully develop and fluctuates. By showing that the effects of prism adaptation in the undamaged brain are not ephemeral, these findings reveal the presence of another, so-far neglected dimension in the domain of the cognitive effects induced by prism adaptation, namely time. The prolonged duration of the induced visuospatial shift, previously considered to be a feature of prism adaptation unique to brain-damaged subjects, also applies to the normal brain.
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Affiliation(s)
- Selene Schintu
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon, France; University of Lyon 1, Lyon, France; Hospices Civils de Lyon, Neuro-immersion & Mouvement et Handicap, Lyon, France.
| | - Laure Pisella
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon, France; University of Lyon 1, Lyon, France
| | - Stéphane Jacobs
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon, France; University of Lyon 1, Lyon, France
| | - Romeo Salemme
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon, France; University of Lyon 1, Lyon, France; Hospices Civils de Lyon, Neuro-immersion & Mouvement et Handicap, Lyon, France
| | - Karen T Reilly
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon, France; University of Lyon 1, Lyon, France
| | - Alessandro Farnè
- INSERM U1028, CNRS UMR5292, Lyon Neuroscience Research Center, ImpAct Team, Lyon, France; University of Lyon 1, Lyon, France; Hospices Civils de Lyon, Neuro-immersion & Mouvement et Handicap, Lyon, France
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Scarpina F, Van der Stigchel S, Nijboer TCW, Dijkerman HC. Prism adaptation changes the subjective proprioceptive localization of the hands. J Neuropsychol 2013; 9:21-32. [DOI: 10.1111/jnp.12032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Revised: 10/03/2013] [Indexed: 11/26/2022]
Affiliation(s)
- Federica Scarpina
- Department of Brain and Behavioural Sciences; University of Pavia; Italy
- Experimental Psychology; Helmholtz Institute; Utrecht University; Utrecht the Netherlands
| | | | - Tanja Cornelia Wilhelmina Nijboer
- Experimental Psychology; Helmholtz Institute; Utrecht University; Utrecht the Netherlands
- Rudolf Magnus Institute of Neuroscience and Centre of Excellence for Rehabilitation Medicine; University Medical Centre Utrecht and Rehabilitation Centre De Hoogstraat; Utrecht the Netherlands
- Department of Neurology; University Medical Center; Utrecht the Netherlands
| | - Hendrik Christiaan Dijkerman
- Experimental Psychology; Helmholtz Institute; Utrecht University; Utrecht the Netherlands
- Department of Neurology; University Medical Center; Utrecht the Netherlands
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Bultitude JH, List A, Aimola Davies AM. Prism adaptation does not alter object-based attention in healthy participants. F1000Res 2013; 2:232. [PMID: 24715960 PMCID: PMC3962007 DOI: 10.12688/f1000research.2-232.v1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/09/2013] [Indexed: 11/20/2022] Open
Abstract
Hemispatial neglect (‘neglect’) is a disabling condition that can follow damage to the right side of the brain, in which patients show difficulty in responding to or orienting towards objects and events that occur on the left side of space. Symptoms of neglect can manifest in both space- and object-based frames of reference. Although patients can show a combination of these two forms of neglect, they are considered separable and have distinct neurological bases. In recent years considerable evidence has emerged to demonstrate that spatial symptoms of neglect can be reduced by an intervention called prism adaptation. Patients point towards objects viewed through prismatic lenses that shift the visual image to the right. Approximately five minutes of repeated pointing results in a leftward recalibration of pointing and improved performance on standard clinical tests for neglect. The understanding of prism adaptation has also been advanced through studies of healthy participants, in whom adaptation to leftward prismatic shifts results in temporary neglect-like performance. Here we examined the effect of prism adaptation on the performance of healthy participants who completed a computerised test of space- and object-based attention. Participants underwent adaptation to leftward- or rightward-shifting prisms, or performed neutral pointing according to a between-groups design. Significant pointing after-effects were found for both prism groups, indicating successful adaptation. In addition, the results of the computerised test revealed larger reaction-time costs associated with shifts of attention between two objects compared to shifts of attention within the same object, replicating previous work. However there were no differences in the performance of the three groups, indicating that prism adaptation did not influence space- or object-based attention for this task. When combined with existing literature, the results are consistent with the proposal that prism adaptation may only perturb cognitive functions for which normal baseline performance is already biased.
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Affiliation(s)
- Janet H Bultitude
- Oxford Centre for Functional Magnetic Resonance Imaging of the Brain (FMRIB), Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, OX3 9DU, UK
| | - Alexandra List
- Department of Psychology and Neuroscience Program, Hamilton College, Clinton, NY 13323, USA
| | - Anne M Aimola Davies
- Research School of Psychology, The Australian National University, Canberra, 0200, Australia ; Department of Experimental Psychology, University of Oxford, Oxford, OX1 3UD, UK
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Vieira S, Quercia P, Bonnetblanc F, Michel C. Space representation in children with dyslexia and children without dyslexia: contribution of line bisection and circle centering tasks. RESEARCH IN DEVELOPMENTAL DISABILITIES 2013; 34:3997-4008. [PMID: 24036389 DOI: 10.1016/j.ridd.2013.08.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 08/17/2013] [Accepted: 08/19/2013] [Indexed: 06/02/2023]
Abstract
Line bisection tasks (different space locations and different line lengths) and circle centering tasks (visuo-proprioceptive and proprioceptive explorations, with left or right starting positions) were used to investigate space representation in children with dyslexia and children without dyslexia. In line bisection, children with dyslexia showed a significant rightward bias for central and right-sided locations and a leftward bias for left-sided location. Furthermore, the spatial context processing was asymmetrically more efficient in the left space. In children without dyslexia, no significant bias was observed in central lines but the spatial context processing was symmetrical in both spaces. When the line length varied, no main effect was shown. These results strengthen the 'inverse pseudoneglect' hypothesis in dyslexia. In the lateral dimension of the circle centering tasks, children showed a response bias in the direction of the starting hand location for proprioceptive condition. For radial dimension, the children showed a forward bias in visuo-proprioceptive condition and more backward error in proprioceptive condition. Children with dyslexia showed a forward bias in clockwise exploration and more accurate performance in counterclockwise exploration for left starting position which may be in accordance with leftward asymmetrical spatial context processing in line bisection. These results underline the necessity to use the line bisection task with different locations as an appropriate experimental paradigm to study lateral representational bias in dyslexia. The contribution of the present results in the understanding of space representation in children with dyslexia and children without dyslexia is discussed in terms of attentional processes and neuroanatomical substrate.
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Affiliation(s)
- Stéphanie Vieira
- Université de Bourgogne, Dijon, Campus Universitaire, UFR STAPS, BP 27877, F-21078 Dijon, France; INSERM U1093, Cognition, Action et Plasticité Sensorimotrice, F-21078 Dijon, France
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Guinet M, Michel C. Prism adaptation and neck muscle vibration in healthy individuals: are two methods better than one? Neuroscience 2013; 254:443-51. [PMID: 24035829 DOI: 10.1016/j.neuroscience.2013.08.067] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 08/29/2013] [Accepted: 08/29/2013] [Indexed: 11/18/2022]
Abstract
Studies involving therapeutic combinations reveal an important benefit in the rehabilitation of neglect patients when compared to single therapies. In light of these observations our present work examines, in healthy individuals, sensorimotor and cognitive after-effects of prism adaptation and neck muscle vibration applied individually or simultaneously. We explored sensorimotor after-effects on visuo-manual open-loop pointing, visual and proprioceptive straight-ahead estimations. We assessed cognitive after-effects on the line bisection task. Fifty-four healthy participants were divided into six groups designated according to the exposure procedure used with each: 'Prism' (P) group; 'Vibration with a sensation of body rotation' (Vb) group; 'Vibration with a move illusion of the LED' (Vl) group; 'Association with a sensation of body rotation' (Ab) group; 'Association with a move illusion of the LED' (Al) group; and 'Control' (C) group. The main findings showed that prism adaptation applied alone or combined with vibration showed significant adaptation in visuo-manual open-loop pointing, visual straight-ahead and proprioceptive straight-ahead. Vibration alone produced significant after-effects on proprioceptive straight-ahead estimation in the Vl group. Furthermore all groups (except C group) showed a rightward neglect-like bias in line bisection following the training procedure. This is the first demonstration of cognitive after-effects following neck muscle vibration in healthy individuals. The simultaneous application of both methods did not produce significant greater after-effects than prism adaptation alone in both sensorimotor and cognitive tasks. These results are discussed in terms of transfer of sensorimotor plasticity to spatial cognition in healthy individuals.
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Affiliation(s)
- M Guinet
- Université de Bourgogne, Campus Universitaire, UFR STAPS, BP 27877, Dijon F-21078, France; INSERM, U 1093, Cognition, Action et Plasticité sensorimotrice, Dijon F-21078, France
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Jacquin-Courtois S, O'Shea J, Luauté J, Pisella L, Revol P, Mizuno K, Rode G, Rossetti Y. Rehabilitation of spatial neglect by prism adaptation: a peculiar expansion of sensorimotor after-effects to spatial cognition. Neurosci Biobehav Rev 2013; 37:594-609. [PMID: 23428624 DOI: 10.1016/j.neubiorev.2013.02.007] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 02/02/2013] [Accepted: 02/11/2013] [Indexed: 10/27/2022]
Abstract
Unilateral neglect is a neurological condition responsible for many debilitating effects on everyday life, poor functional recovery, and decreased ability to benefit from treatment. Prism adaptation (PA) to a right lateral displacement of the visual field is classically known to directionally bias visuo-motor and sensory-motor correspondences. One longstanding issue about this visuo-motor plasticity is about its specificity to the exposure condition. In contrast to very poor transfer to unexposed effectors classically described in healthy subjects, therapeutic results obtained in neglect patients suggested that PA can generate unexpected "expansion". Prism adaptation affects numerous levels of neglect symptomatology, suggesting that its effects somehow expand to unexposed sensory, motor and cognitive systems. The available body of evidence in support for this expansion raises important questions about the mechanisms involved in producing unexpected cognitive effects following a simple and moderate visuo-motor adaptation. We further develop here the idea that prism adaptation expansion to spatial cognition involves a cerebello-cortical network and review support for this model. Building on the basic, therapeutical and pathophysiological knowledge accumulated over the last 15 years, we also provide guidelines for the optimal use of prism adaptation in the clinic. Although further research and clinical trials are required to precisely define the ideal regime for routine applications, the current state of the art allows us to outline practical recommendations for therapeutical use of prisms.
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Affiliation(s)
- Sophie Jacquin-Courtois
- ImpAct, Centre des Neurosciences de Lyon, Inserm UMR-S 1028;CNRS UMR 5292, 16 Avenue Lépine, 69676 Bron, France
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Left-deviating prism adaptation in left neglect patient: reflexions on a negative result. Neural Plast 2012; 2012:718604. [PMID: 23050168 PMCID: PMC3463195 DOI: 10.1155/2012/718604] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Accepted: 08/08/2012] [Indexed: 11/18/2022] Open
Abstract
Adaptation to right-deviating prisms is a promising intervention for the rehabilitation of patients with left spatial neglect. In order to test the lateral specificity of prism adaptation on left neglect, the present study evaluated the effect of left-deviating prism on straight-ahead pointing movements and on several classical neuropsychological tests in a group of five right brain-damaged patients with left spatial neglect. A group of healthy subjects was also included for comparison purposes. After a single session of exposing simple manual pointing to left-deviating prisms, contrary to healthy controls, none of the patients showed a reliable change of the straight-ahead pointing movement in the dark. No significant modification of attentional paper-and-pencil tasks was either observed immediately or 2 hours after prism adaptation. These results suggest that the therapeutic effect of prism adaptation on left spatial neglect relies on a specific lateralized mechanism. Evidence for a directional effect for prism adaptation both in terms of the side of the visuomanual adaptation and therefore possibly in terms of the side of brain affected by the stimulation is discussed.
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Bultitude JH, Van der Stigchel S, Nijboer TCW. Prism adaptation alters spatial remapping in healthy individuals: evidence from double-step saccades. Cortex 2012; 49:759-70. [PMID: 22386659 DOI: 10.1016/j.cortex.2012.01.008] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/24/2011] [Accepted: 01/25/2012] [Indexed: 12/15/2022]
Abstract
The visual system is able to represent and integrate large amounts of information as we move our gaze across a scene. This process, called spatial remapping, enables the construction of a stable representation of our visual environment despite constantly changing retinal images. Converging evidence implicates the parietal lobes in this process, with the right hemisphere having a dominant role. Indeed, lesions to the right parietal lobe (e.g., leading to hemispatial neglect) frequently result in deficits in spatial remapping. Research has demonstrated that recalibrating visual, proprioceptive and motor reference frames using prism adaptation ameliorates neglect symptoms and induces neglect-like performance in healthy people - one example of the capacity for rapid neural plasticity in response to new sensory demands. Because of the influence of prism adaptation on parietal functions, the present research investigates whether prism adaptation alters spatial remapping in healthy individuals. To this end twenty-eight undergraduates completed blocks of a double-step saccade (DSS) task after sham adaptation and adaptation to leftward- or rightward-shifting prisms. The results were consistent with an impairment in spatial remapping for left visual field targets following adaptation to leftward-shifting prisms. These results suggest that temporarily realigning spatial representations using sensory-motor adaptation alters right-hemisphere remapping processes in healthy individuals. The implications for the possible mechanisms of the amelioration of hemispatial neglect after prism adaptation are discussed.
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Affiliation(s)
- Janet H Bultitude
- Oxford Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford, UK.
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Hach S, Schütz-Bosbach S. Touching base: The effect of participant and stimulus modulation factors on a haptic line bisection task. Laterality 2011; 17:180-201. [PMID: 22385141 DOI: 10.1080/1357650x.2010.551128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Acquiring information about our environment through touch is vital in everyday life. Yet very little literature exists about factors that may influence haptic or tactile processing. Recent neuroimaging studies have reported haptic laterality effects that parallel those reported in the visual literature. With the use of a haptic variant of the classical line bisection task, the present study aimed to determine the presence of laterality effects on a behavioural level. Specifically, three handedness groups including strong dextrals, strong sinistrals, and-the to-date largely neglected group of-mixed-handers were examined in their ability to accurately bisect stimuli constructed from corrugated board strips of various lengths. Stimulus factors known to play a role in visuospatial perception including stimulus location, the hand used for bisection, and direction of exploration were systematically varied through pseudo-randomisation. Similar to the visual domain, stimulus location and length as well as participants' handedness and the hand used for bisection exerted a significant influence on participants' estimate of the centre of haptically explored stimuli. However, these effects differed qualitatively from those described for the visual domain, and the factor direction of exploration did not exert any significant effect. This indicates that laterality effects reported on a neural level are sufficiently pronounced to result in measurable behavioural effects. The results, first, add to laterality effects reported for the visual and auditory domain, second, are in line with supramodal spatial processing and third, provide additional evidence to a conceptualisation of pseudoneglect and neglect as signs of hemispheric attentional asymmetries.
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Affiliation(s)
- Sylvia Hach
- Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
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Seeing your error alters my pointing: observing systematic pointing errors induces sensori-motor after-effects. PLoS One 2011; 6:e21070. [PMID: 21731649 PMCID: PMC3121736 DOI: 10.1371/journal.pone.0021070] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Accepted: 05/18/2011] [Indexed: 11/19/2022] Open
Abstract
During the procedure of prism adaptation, subjects execute pointing movements to visual targets under a lateral optical displacement: As consequence of the discrepancy between visual and proprioceptive inputs, their visuo-motor activity is characterized by pointing errors. The perception of such final errors triggers error-correction processes that eventually result into sensori-motor compensation, opposite to the prismatic displacement (i.e., after-effects). Here we tested whether the mere observation of erroneous pointing movements, similar to those executed during prism adaptation, is sufficient to produce adaptation-like after-effects. Neurotypical participants observed, from a first-person perspective, the examiner's arm making incorrect pointing movements that systematically overshot visual targets location to the right, thus simulating a rightward optical deviation. Three classical after-effect measures (proprioceptive, visual and visual-proprioceptive shift) were recorded before and after first-person's perspective observation of pointing errors. Results showed that mere visual exposure to an arm that systematically points on the right-side of a target (i.e., without error correction) produces a leftward after-effect, which mostly affects the observer's proprioceptive estimation of her body midline. In addition, being exposed to such a constant visual error induced in the observer the illusion “to feel” the seen movement. These findings indicate that it is possible to elicit sensori-motor after-effects by mere observation of movement errors.
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Asymmetrical effects of adaptation to left- and right-shifting prisms depends on pre-existing attentional biases. J Int Neuropsychol Soc 2010; 16:795-804. [PMID: 20598215 PMCID: PMC2953607 DOI: 10.1017/s1355617710000597] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Proposals that adaptation with left-shifting prisms induces neglect-like symptoms in normal individuals rely on a dissociation between the postadaptation performance of individuals trained with left- versus right-shifting prisms (e.g., Colent, Pisella, & Rossetti, 2000). A potential problem with this evidence is that normal young adults have an a priori leftward bias (e.g., Jewell & McCourt, 2000). In Experiment 1, we compared the line bisection performance of young adults to that of aged adults, who as a group may lack a leftward bias in line bisection. Participants trained with both left- and right-shifting prisms. Consistent with our hypothesis, while young adults demonstrated aftereffects for left, but not right prisms, aged adults demonstrated reliable aftereffects for both prisms. In Experiment 2, we recruited a larger sample of young adults, some of whom were right-biased at baseline. We observed an interaction between baseline bias and prism-shift, consistent with the results of Experiment 1: Left-biased individuals showed a reduced aftereffect when training with right-shifting prisms and right-biased individuals showed a reduced aftereffect when training with left-shifting prisms. These results suggest that previous failures to find generalizable aftereffects with right-shifting prisms may be driven by participants' baseline biases rather than specific effects of the prism itself.
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Striemer CL, Danckert JA. Through a prism darkly: re-evaluating prisms and neglect. Trends Cogn Sci 2010; 14:308-16. [PMID: 20444640 DOI: 10.1016/j.tics.2010.04.001] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2009] [Revised: 04/02/2010] [Accepted: 04/02/2010] [Indexed: 11/18/2022]
Abstract
Many studies have demonstrated that prism adaptation can reduce several symptoms of visual neglect: a disorder in which patients fail to respond to information in contralesional space. The dominant framework to explain these effects proposes that prisms influence higher order visuospatial processes by acting on brain circuits that control spatial attention and perception. However, studies that have directly examined the influence of prisms on perceptual biases inherent to neglect have revealed very few beneficial effects. We propose an alternative explanation whereby many of the beneficial effects of prisms arise via the influence of adaptation on circuits in the dorsal visual stream controlling attention and visuomotor behaviors. We further argue that prisms have little influence on the pervasive perceptual biases that characterize neglect.
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Affiliation(s)
- Christopher L Striemer
- Department of Psychology, Centre for Brain and Mind, Social Sciences Centre, University of Western Ontario, London, Ontario, Canada, N6A 5C2
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Turton AJ, O'Leary K, Gabb J, Woodward R, Gilchrist ID. A single blinded randomised controlled pilot trial of prism adaptation for improving self-care in stroke patients with neglect. Neuropsychol Rehabil 2010; 20:180-96. [DOI: 10.1080/09602010903040683] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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