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Post-stroke unilateral spatial neglect: virtual reality-based navigation and detection tasks reveal lateralized and non-lateralized deficits in tasks of varying perceptual and cognitive demands.

ABSTRACT: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke impairment, has been shown to affect the recovery of locomotor and navigation skills needed for community mobility. We recently found that USN alters goal-directed locomotion in conditions of different cognitive/perceptual demands. However, sensorimotor post-stroke dysfunction (e.g. decreased walking speed) could have influenced the results. Analogous to a previously used goal-directed locomotor paradigm, a seated, joystick-driven navigation experiment, minimizing locomotor demands, was employed in individuals with and without post-stroke USN (USN+ and USN-, respectively) and healthy controls (HC).Participants (n?=?15 per group) performed a seated, joystick-driven navigation and detection time task to targets 7 m away at 0°, ±15°/30° in actual (visually-guided), remembered (memory-guided) and shifting (visually-guided with representational updating component) conditions while immersed in a 3D virtual reality environment.Greater end-point mediolateral errors to left-sided targets (remembered and shifting conditions) and overall lengthier onsets in reorientation strategy (shifting condition) were found for USN+ vs. USN- and vs. HC (p?

SUBMITTER: Ogourtsova T

PROVIDER: S-EPMC5913876 | biostudies-other | 2018 Apr

REPOSITORIES: biostudies-other

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Post-stroke unilateral spatial neglect: virtual reality-based navigation and detection tasks reveal lateralized and non-lateralized deficits in tasks of varying perceptual and cognitive demands.

Ogourtsova Tatiana T Archambault Philippe S PS Lamontagne Anouk A

Journal of neuroengineering and rehabilitation 20180423 1

<h4>Background</h4>Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke impairment, has been shown to affect the recovery of locomotor and navigation skills needed for community mobility. We recently found that USN alters goal-directed locomotion in conditions of different cognitive/perceptual demands. However, sensorimotor post-stroke dysfunction (e.g. decreased walking speed) could have influenced the results. Analogous to a previously used goal-directed locomotor par ...[more]

PMID: 29685145

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Project description:ObjectivesThe need for remote delivery of mental health interventions including instruction in meditation has become paramount in the wake of the current global pandemic. However, the support one may usually feel within the physical presence of an instructor may be weakened when interventions are delivered remotely, potentially impacting one's meditative experiences. Use of head-mounted displays (HMD) to display video-recorded instruction may increase one's sense of psychological presence with the instructor as compared to presentation via regular flatscreen (e.g., laptop) monitor. This research therefore evaluated a didactic, trauma-informed care approach to instruction in mindfulness meditation by comparing meditative responses to an instructor-guided meditation when delivered face-to-face vs. by pre-recorded 360° videos viewed either on a standard flatscreen monitor (2D format) or via HMD (i.e., virtual reality [VR] headset; 3D format).MethodsYoung adults (n = 82) were recruited from a university introductory course and experienced a 360° video-guided meditation via HMD (VR condition, 3D format). They were also randomly assigned to practice the same meditation either via scripted face-to-face instruction (in vivo [IV] format) or when viewed on a standard laptop display (non-VR condition, 2D format). Positive and negative affect and meditative experience ratings were self-reported and participants' maintenance of focused attention to breathing (i.e., meditation breath attention scores [MBAS]) were recorded during each meditation.ResultsMeditating in VR (3D format) was associated with a heightened experience of awe overall. When compared to face-to-face instruction (IV format), VR meditation was rated as less embarrassing but also less enjoyable and more tiring. When compared to 2D format, VR meditations were associated with greater experiences of relaxation, less distractibility from the process of breathing, and less fatigue. No differences were found between VR and non-VR meditation in concentration (MBAS). Baseline posttraumatic stress symptoms were risk factors for experiencing distress while meditating in either (VR and non-VR) instructional format. Of those who reported a preference for one format, approximately half preferred the VR format and approximately half preferred the IV format.ConclusionsRecorded 360° video instruction in meditation viewed with a HMD (i.e., VR/3D format) appears to offer some experiential advantage over instructions given in 2D format and may offer a safe-and for some even preferred-alternative to teaching meditation face-to-face.Supplementary informationThe online version contains supplementary material available at 10.1007/s12671-021-01612-w.

Dataset Information

Post-stroke unilateral spatial neglect: virtual reality-based navigation and detection tasks reveal lateralized and non-lateralized deficits in tasks of varying perceptual and cognitive demands.

Publications

Post-stroke unilateral spatial neglect: virtual reality-based navigation and detection tasks reveal lateralized and non-lateralized deficits in tasks of varying perceptual and cognitive demands.

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