Long-term effects of prism adaptation on chronic neglect after stroke

Shiraishi, Hiroaki; Yamakawa, Yuriko; Itou, Ayaka; Muraki, Toshiaki; Asada, Takashi

doi:10.3233/nre-2008-23203

Cited by 84 publications

(51 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Effects of prism adaptation have been reported across clinical measures of neglect, but also in more daily situations, such as wheelchair navigation (Rossetti et al, 1999) and postural control (Tilikete et al, 2001). The beneficial effects of prism adaptation have been reported to last 2 h (Rossetti et al, 1998) up to one week (Dijkerman et al, 2004;Pisella et al, 2002) after a single adaptation session, and even up to 6 weeks following repetitive prism adaptation (Shiraishi et al, 2008;McIntosh et al, 2002). Additionally, long-term prism training has been reported to show long-lasting beneficial effects, from weeks (Frassinetti et al, 2002;Serino et al, 2006;Serino et al, 2009;Serino et al, 2007) up to a year (Humphreys et al, 2006) after ending adaptation.…”

Section: Introductionmentioning

confidence: 99%

Repetitive long-term prism adaptation permanently improves the detection of contralesional visual stimuli in a patient with chronic neglect

Nijboer

Nys

Smagt

et al. 2011

Cortex

View full text Add to dashboard Cite

The aim of the current study was to investigate long-term effects in spatial awareness after daily exposure to prism adaptation during three months in a patient with hemispatial neglect. Results showed improvement in the detection of stimuli in the contralesional visual field, as measured with perimetry, in the contralesional visual field up to 24 months after ending prism adaptation. These perimetrical results suggest that compensatory eye movements are an unlikely candidate for an underlying mechanism.

show abstract

Section: Introductionmentioning

confidence: 99%

Repetitive long-term prism adaptation permanently improves the detection of contralesional visual stimuli in a patient with chronic neglect

Nijboer

Nys

Smagt

et al. 2011

Cortex

View full text Add to dashboard Cite

show abstract

“…In contrast, no pain reduction was observed when a CRPS patient underwent 2 weeks of PA using lenses that shifted the visual image only by 5° [24]. Furthermore, prisms strength of 10°-15°was found to be sufficient to induce lasting amelioration of hemispatial neglect after brain injury [14,17,18,36,37], whereas weaker prisms did not improve neglect [38]. During each treatment session, the participant is seated in front of a vertical surface, such as a wall, upon which an A4 laminated page in landscape orientation is positioned.…”

Section: Treatmentmentioning

confidence: 97%

“…The procedure is adapted from a previous study [56] in which pairs of numbers were read aloud to the participants and they were required to indicate the number that would fall midway between the two without making any calculations. The current task uses the same intervals (9,16,25,36,49 For example, the midpoint number between 54 and 70 (16-interval) would be 62 (Fig. 4).…”

Section: Mental Representation Of Space the Mental Numbermentioning

confidence: 99%

Pain reduction by inducing sensory-motor adaptation in Complex Regional Pain Syndrome (CRPS PRISMA): protocol for a double-blind randomized controlled trial

et al. 2020

View full text Add to dashboard Cite

Background: Complex Regional Pain Syndrome (CRPS) presents as chronic, continuous pain and sensory, autonomic, and motor abnormalities affecting one or more extremities. People with CRPS can also show changes in their perception of and attention to the affected body part and sensory information in the affected side of space. Prism Adaptation (PA) is a behavioural intervention targeted at reducing attention deficits in post-stroke hemispatial neglect. PA also appears to reduce pain and other CRPS symptoms; however, these therapeutic effects have been demonstrated only in small unblinded studies. This paper describes the protocol for an ongoing double-blind, randomized, sham-controlled clinical trial that will evaluate the efficacy of PA treatment for CRPS. The secondary aims of the study are to examine the relationships between neuropsychological changes (such as spatial attention, space and body representation, and motor spatial performance) and clinical manifestations of CRPS, as well as symptom improvement. Methods: Forty-two participants with upper-limb CRPS type I will undergo 2 weeks of twice-daily PA treatment or sham treatment. The primary outcome measures are current pain intensity and CRPS severity score, measured immediately before and after the treatment period. Secondary outcome measures include the results of self-report questionnaires about pain, movement, symptoms interference, and body representation; clinical assessments of sensory, motor, and autonomic functions; and computer-based psychophysical tests of neuropsychological functions. Data are collected in four research visits: 4 weeks and 1 day before treatment, and 1 day and 4 weeks after the end of treatment. Additional follow-up through postal questionnaires is conducted 3 and 6 months post-treatment. Discussion: It is hypothesised that participants undergoing PA treatment, compared to those receiving sham treatment, will show greater reduction in pain and CRPS severity score, and improvements on other clinical and neuropsychological measures. Also, more pronounced neuropsychological symptoms are predicted to correlate with more severe clinical CRPS symptoms. This study will provide the first randomized double-blind evaluation of the therapeutic effects of PA that could be implemented as a rehabilitation method for CRPS, and will contribute to the understanding of how neuropsychological changes in body representation and attention pertain to the manifestation and treatment of CRPS. Trial registration: (27/03/2017): ISRCTN46828292 (ISRCTN-ISRCTN46828292: Treatment of complex regional pain syndrome (CRPS) with sensory-motor adaptation).

show abstract

“…This was confirmed in a seminal study showing behavioral improvements that lasted over two hours after a single session [46], longer than any other intervention for neglect to date. Since then numerous studies have demonstrated that after multiple rounds of prism adaptation effects may last for weeks [47][48][49] or months [50,51]. The intervention is effective even in chronic stroke [48,[52][53][54][55].…”

Section: Introductionmentioning

confidence: 99%

“…Since then numerous studies have demonstrated that after multiple rounds of prism adaptation effects may last for weeks [47][48][49] or months [50,51]. The intervention is effective even in chronic stroke [48,[52][53][54][55]. Effects are manifest well beyond visuomotor performance to visual imagery [56,57], visuo-verbal tasks [58], bisection of a mental number line [59], body representation [60] and other aspects of cognition [43,44].…”

Section: Introductionmentioning

confidence: 99%

Inducing Visuomotor Adaptation Using Virtual Reality Gaming with a Virtual Shift as a Treatment for Unilateral Spatial Neglect

Carter¹,

Foreman²,

Martin³

et al. 2016

J. Intellect. Disabl. Diagn. Treat.

View full text Add to dashboard Cite

Unilateral spatial neglect after stroke is characterized by reduced responses to stimuli on the contralesional side, causing significant impairments in self-care and safety. Conventional visuomotor adaptation (VMA) with prisms that cause a lateral shift of the visual scene can decrease neglect symptoms but is not engaging according to patients. Performing VMA within a virtual reality (VR) environment may be more engaging but has never been tested. To determine if VMA can be elicited in a VR environment, healthy subjects (n=7) underwent VMA that was elicited by either wearing prisms that caused an optical shift, or by application of a virtual shift of the hand cursor within the VR environment. A low cost VR system was developed by coupling the Kinect v2 gaming sensor to online games via the Flexible Action and Articulated Skeleton Toolkit (FAAST) software. The adaptation phase of training consisted of a reaching task in online games or in a custom target pointing program. Following the adaptation phase the optical or virtual shift was removed and participants were assessed during the initial portion of the de-adaptation phase for the presence of an after-effect on their reaching movements, with lateral reaching errors indicating the successful induction of VMA. Results show that practicing reaching in a VR environment with a virtual shift lead to a horizontal after-effect similar to conventional prism adaptation. The results demonstrate that VMA can be elicited in a VR environment and suggest that VR gaming therapy could be used to improve recovery from unilateral spatial neglect.

show abstract

Long-term effects of prism adaptation on chronic neglect after stroke

Cited by 84 publications

References 38 publications

Repetitive long-term prism adaptation permanently improves the detection of contralesional visual stimuli in a patient with chronic neglect

Repetitive long-term prism adaptation permanently improves the detection of contralesional visual stimuli in a patient with chronic neglect

Pain reduction by inducing sensory-motor adaptation in Complex Regional Pain Syndrome (CRPS PRISMA): protocol for a double-blind randomized controlled trial

Inducing Visuomotor Adaptation Using Virtual Reality Gaming with a Virtual Shift as a Treatment for Unilateral Spatial Neglect

Contact Info

Product

Resources

About