scholarly journals Prism Adaptation and Optokinetic Stimulation Comparison in the Rehabilitation of Unilateral Spatial Neglect

2021 ◽  
Vol 11 (11) ◽  
pp. 1488
Author(s):  
Alessio Facchin ◽  
Giusi Figliano ◽  
Roberta Daini
Keyword(s):  
Crossover Design ◽  
Prism Adaptation ◽  
Spatial Neglect ◽  
Optokinetic Stimulation ◽  
Clinical Tests ◽  
Unilateral Spatial Neglect ◽  
End Of Treatment ◽  
Significant Amelioration ◽  
Neuropsychological Assessments ◽  
The Individual

Prism adaptation (PA) is one of the most effective treatments for the rehabilitation of unilateral spatial neglect. Optokinetic stimulation (OKS) has also been demonstrated to be effective in ameliorating symptoms of neglect. The aim of this study is to compare the effectiveness of these two methods in a group of neglect patients using a crossover design. A group of 13 post-acute brain-damaged patients with unilateral spatial neglect, who had never been rehabilitated, were treated using PA and OKS. Each treatment was applied for 10 sessions, twice a day, to all patients with both treatments in crossed order (i.e., PA followed by OKS or vice versa). Neuropsychological assessments were performed: before the first (T1), at the end of the first/beginning of the second (T2) and at the end of the second training sessions (T3), and two weeks after the end of treatment (T4). Both procedures produced a significant improvement in clinical tests at T2, independent of the type of training. The results suggest that either PA or OKS induces a significant amelioration of neglect in right brain-damaged patients, mainly in the first block of treatment. Since no differences between treatments were found, they could be applied in clinical practice, according to the requirements of the individual patient.

Prism Adaptation Therapy Enhances Rehabilitation of Stroke Patients With Unilateral Spatial Neglect

2011 ◽  
Vol 25 (8) ◽  
pp. 711-720 ◽  
Author(s):  
Katsuhiro Mizuno ◽  
Tetsuya Tsuji ◽  
Toru Takebayashi ◽  
Toshiyuki Fujiwara ◽  
Kimitaka Hase ◽  
...  
Keyword(s):  
Prism Adaptation ◽  
Spatial Neglect ◽  
Stroke Patients ◽  
Unilateral Spatial Neglect

scholarly journals Effect of Prism Adaptation on a Patient with Unilateral Spatial Neglect with Crossed Aphasia

2007 ◽  
Vol 22 (1) ◽  
pp. 167-170
Author(s):  
Satoru WATANABE ◽  
Kazu AMIMOTO ◽  
Ryoko OSAWA ◽  
Tomoyuki ARAI ◽  
Minako KOBAYASHI
Keyword(s):  
Prism Adaptation ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect ◽  
Crossed Aphasia

scholarly journals Immersive virtual prism adaptation therapy with depth sensing camera: A feasibility study with functional near infrared spectroscopy in healthy adults

2021 ◽  
Author(s):  
Sungmin Cho ◽  
Won-Seok Kim ◽  
Jihong Park ◽  
Seung Hyun Lee ◽  
Jongseung Lee ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Right Hemisphere ◽  
Prism Adaptation ◽  
Spatial Neglect ◽  
Depth Sensing ◽  
Functional Near Infrared Spectroscopy ◽  
Unilateral Spatial Neglect ◽  
The Right

Unilateral spatial neglect (USN) is common after stroke and associated with poor functional recovery. Prism adaptation (PA) is one of the most supported modality able to ameliorate USN but underapplied due to several issues. Using immersive virtual reality and depth-sensing camera, we developed the virtual prism adaptation therapy (VPAT) to overcome the limitations in conventional PA. In this study, we investigated whether VPAT can induce behavioral adaptations and which cortical area is most significantly activated. Fourteen healthy subjects participated in this study. The experiment consisted of four sequential phases (pre-VAPT, VPAT-10°, VPAT-20°, and post-VPAT) with functional near-infrared spectroscopy recordings. Each phase consisted of alternating target pointing and resting (or clicking) blocks. To find out the most significantly activated area during pointing in different phases (VPAT-10°, VPAT-20°, and Post-VPAT) in contrast to pointing during the pre-VPAT phase, we analyzed changes in oxyhemoglobin concentration during pointing. The pointing errors of the virtual hand deviated to the right-side during early pointing blocks in the VPAT-10°and VPAT-20°phases. There was a left-side deviation of the real hand to the target in the post-VPAT phase. The most significantly activated channels were all located in the right hemisphere, and possible corresponding cortical areas included the dorsolateral prefrontal cortex and frontal eye field. In conclusion, VPAT may induce behavioral adaptation with modulation of the dorsal attentional network. Future clinical trials using multiple sessions of a high degree of rightward deviation VPAT over a more extended period are required in stroke patients with unilateral spatial neglect.

scholarly journals Effects of Prism Adaptation on Reference Systems for Extrapersonal Space in Neglect Patients

2019 ◽  
Vol 9 (11) ◽  
pp. 327 ◽  
Author(s):  
Laura Abbruzzese ◽  
Alessio Damora ◽  
Gabriella Antonucci ◽  
Pierluigi Zoccolotti ◽  
Mauro Mancuso
Keyword(s):  
Target Stimulus ◽  
Prism Adaptation ◽  
Spatial Neglect ◽  
Reference Systems ◽  
Mixed Form ◽  
Training Performance ◽  
Unilateral Spatial Neglect ◽  
Left Part ◽  
Extrapersonal Space

Up to now, rehabilitation of unilateral spatial neglect has focused on egocentric forms of neglect, whereas less is known about the possibility to improve allocentric deficits. The present study aimed to examine the efficacy of prism adaptation (PA) training on patients with different forms of neglect: egocentric, allocentric, or mixed. Twenty-eight patients were assessed with specific neglect tests before (T0) and after (T1) 10 sessions of PA training. Performance in the Apples Cancellation test was used to identify patients with egocentric (n = 6), allocentric (n = 5), or mixed (n = 17) forms of neglect. In the overall group of patients, PA training produced significant improvements in performance across different neglect tests. In terms of the egocentric–allocentric distinction, the training was effective in reducing omissions in the left part of space in the Apples Cancellation test both for patients with egocentric neglect and mixed neglect. By contrast, errors of commissions (marking the inability to detect the left part of the target stimulus, i.e., allocentric neglect) remained unchanged after PA in patients with allocentric neglect and actually increased marginally in patients with mixed neglect. The PA training is effective in improving egocentric neglect, while it is ineffective on the allocentric form of the disturbance. Notably, the allocentric component of neglect is frequently impaired, although this is most often in conjunction with the egocentric impairment, yielding the mixed form of neglect. This stresses the importance of developing exercises tuned to improving allocentric neglect.

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