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Salatino A, Zavattaro C, Gammeri R, Cirillo E, Piatti ML, Pyasik M, Serra H, Pia L, Geminiani G, Ricci R. Virtual reality rehabilitation for unilateral spatial neglect: A systematic review of immersive, semi-immersive and non-immersive techniques. Neurosci Biobehav Rev 2023; 152:105248. [PMID: 37247829 DOI: 10.1016/j.neubiorev.2023.105248] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 05/31/2023]
Abstract
INTRODUCTION In recent decades, new virtual reality (VR)-based protocols have been proposed for the rehabilitation of Unilateral Spatial Neglect (USN), a debilitating disorder of spatial awareness. However, it remains unclear which type of VR protocol and level of VR immersion can maximize the clinical benefits. To answer these questions, we conducted a systematic review of the use of VR for the rehabilitation of USN. METHOD Studies between 2000 and 2022 that met the inclusion criteria were classified according to their research design and degree of immersion (non-immersive, NIVR; semi-immersive, SIVR; immersive, IVR). RESULTS A total of 375 studies were identified, of which 26 met the inclusion criteria. Improvements were found in 84.6% of the reviewed studies: 85.7% used NIVR, 100% used SIVR and 55.6% used IVR. However, only 42.3% of them included a control group and only 19.2% were randomized control trials (RCT). CONCLUSION VR protocols may offer new opportunities for USN rehabilitation, although further RCTs are needed to validate their clinical efficacy.
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Affiliation(s)
- Adriana Salatino
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAN Lab (Space Attention and Action), Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; Department of Life Sciences, Royal Military Academy, Hobbema 8, 1000 Brussels, Belgium
| | - Claudio Zavattaro
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAN Lab (Space Attention and Action), Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy
| | - Roberto Gammeri
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAN Lab (Space Attention and Action), Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy
| | - Emanuele Cirillo
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAN Lab (Space Attention and Action), Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy
| | - Maria Luisa Piatti
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy
| | - Maria Pyasik
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAMBA (SpAtial, Motor and Bodily Awareness) Research Group, Department of Psychology, University of Turin, Via Verdi, 10, 10124 Turin, Italy
| | - Hilary Serra
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAN Lab (Space Attention and Action), Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy
| | - Lorenzo Pia
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAMBA (SpAtial, Motor and Bodily Awareness) Research Group, Department of Psychology, University of Turin, Via Verdi, 10, 10124 Turin, Italy; NIT - Neuroscience Institute of Turin, Via Verdi, 8, 10124 Turin, Italy
| | - Giuliano Geminiani
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; NIT - Neuroscience Institute of Turin, Via Verdi, 8, 10124 Turin, Italy
| | - Raffaella Ricci
- Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; SAN Lab (Space Attention and Action), Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; NIT - Neuroscience Institute of Turin, Via Verdi, 8, 10124 Turin, Italy.
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Gammeri R, Salatino A, Pyasik M, Cirillo E, Zavattaro C, Serra H, Pia L, Roberts DR, Berti A, Ricci R. Modulation of vestibular input by short-term head-down bed rest affects somatosensory perception: implications for space missions. Front Neural Circuits 2023; 17:1197278. [PMID: 37529715 PMCID: PMC10390228 DOI: 10.3389/fncir.2023.1197278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023] Open
Abstract
Introduction On Earth, self-produced somatosensory stimuli are typically perceived as less intense than externally generated stimuli of the same intensity, a phenomenon referred to as somatosensory attenuation (SA). Although this phenomenon arises from the integration of multisensory signals, the specific contribution of the vestibular system and the sense of gravity to somatosensory cognition underlying distinction between self-generated and externally generated sensations remains largely unknown. Here, we investigated whether temporary modulation of the gravitational input by head-down tilt bed rest (HDBR)-a well-known Earth-based analog of microgravity-might significantly affect somatosensory perception of self- and externally generated stimuli. Methods In this study, 40 healthy participants were tested using short-term HDBR. Participants received a total of 40 non-painful self- and others generated electrical stimuli (20 self- and 20 other-generated stimuli) in an upright and HDBR position while blindfolded. After each stimulus, they were asked to rate the perceived intensity of the stimulation on a Likert scale. Results Somatosensory stimulations were perceived as significantly less intense during HDBR compared to upright position, regardless of the agent administering the stimulus. In addition, the magnitude of SA in upright position was negatively correlated with the participants' somatosensory threshold. Based on the direction of SA in the upright position, participants were divided in two subgroups. In the subgroup experiencing SA, the intensity rating of stimulations generated by others decreased significantly during HDBR, leading to the disappearance of the phenomenon of SA. In the second subgroup, on the other hand, reversed SA was not affected by HDBR. Conclusion Modulation of the gravitational input by HDBR produced underestimation of somatosensory stimuli. Furthermore, in participants experiencing SA, the reduction of vestibular inputs by HDBR led to the disappearance of the SA phenomenon. These findings provide new insights into the role of the gravitational input in somatosensory perception and have important implications for astronauts who are exposed to weightlessness during space missions.
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Affiliation(s)
- Roberto Gammeri
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
| | - Adriana Salatino
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
| | - Maria Pyasik
- SpAtial, Motor and Bodily Awareness (SAMBA) Research Group, Department of Psychology, University of Turin, Turin, Italy
| | - Emanuele Cirillo
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
| | - Claudio Zavattaro
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
| | - Hilary Serra
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
| | - Lorenzo Pia
- SpAtial, Motor and Bodily Awareness (SAMBA) Research Group, Department of Psychology, University of Turin, Turin, Italy
| | - Donna R. Roberts
- Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, United States
| | - Anna Berti
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
- SpAtial, Motor and Bodily Awareness (SAMBA) Research Group, Department of Psychology, University of Turin, Turin, Italy
| | - Raffaella Ricci
- Space, Attention and Action (SAN) Lab, Department of Psychology, University of Turin, Turin, Italy
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