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Han Eun Young - One of the best experts on this subject based on the ideXlab platform.
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The Effect of Virtual Reality Training on Unilateral Spatial Neglect in Stroke Patients
Annals of Rehabilitation Medicine, 2011Co-Authors: Yong Mi Kim, Gi Jeong Yun, Young-jin Song, Min Ho Chun, Han Eun YoungAbstract:OBJECTIVE: To investigate the effect of virtual reality training on unilateral spatial neglect in stroke patients. METHOD: Twenty-four stroke patients (14 males and 10 females, mean age=64.7) who had unilateral spatial neglect as a result of right hemisphere stroke were recruited. All patients were randomly assigned to either the virtual reality (VR) group (n=12) or the control group (n=12). The VR group received VR training, which stimulated the left side of their bodies. The control group received conventional neglect therapy such as visual scanning training. Both groups received therapy for 30 minutes a day, five days per week for three weeks. Outcome measurements included star cancellation Test, Line Bisection Test, Catherine Bergego scale (CBS), and the Korean version of modified Barthel index (K-MBI). These measurements were taken before and after treatment. RESULTS: There were no significant differences in the baseLine characteristics and initial values between the two groups. The changes in star cancellation Test results and CBS in the VR group were significantly higher than those of the control group after treatment. The changes in Line Bisection Test score and the K-MBI in the VR group were not statistically significant. CONCLUSION: This study suggests that virtual reality training may be a beneficial therapeutic technique on unilateral spatial neglect in stroke patients.
Sumio Ishiai - One of the best experts on this subject based on the ideXlab platform.
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Unilateral spatial neglect in Alzheimer's disease. A Line Bisection study.
Acta Neurologica Scandinavica, 2009Co-Authors: Sumio Ishiai, Yasumasa Koyama, Ryoichi Okiyama, Keiko SekiAbstract:Neuropsychological studies on Alzheimer's disease (AD) have rarely mentioned about unilateral spatial neglect in spite of widespread use of visuospatial tasks. We reported a 62-year-old woman with probable AD who showed moderate dementia with left unilateral spatial neglect and relatively preserved language function. An extensive Line Bisection study with either hand confirmed her having left unilateral spatial neglect. Single photon emission computed tomography revealed relative hypoperfusion in the right temporal and parietal regions. AD patients with disproportionate right hemisphere dysfunction may exhibit left unilateral spatial neglect if Tested adequately in the stage of mild to moderate dementia. We consider that application of the Line Bisection Test to AD patients contributes to estimation of their right hemisphere function.
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Unilateral spatial neglect in AD: significance of Line Bisection performance.
Neurology, 2000Co-Authors: Sumio Ishiai, Keiko Seki, Yasumasa Koyama, Satoshi Orimo, N. Sodeyama, Eisuke Ozawa, M. Takahashi, Sadakiyo Watabiki, Ryoichi OkiyamaAbstract:Background: Unilateral spatial neglect has been rarely reported in patients with AD, although they often have right and left asymmetry of temporoparietal dysfunction. Objective: To investigate if patients with AD would show unilateral spatial neglect in the Line Bisection Test, and to reveal the relationship between their neglect and the area of cerebral dysfunction. Method:— Thirty-two patients with mild to moderate AD and 32 age-matched healthy control subjects underwent an extensive Line Bisection Test. SPECT was also obtained for the patients. Results: Rightward Bisection errors exceeded the normal range in 25% of patients with AD. They exhibited greater rightward errors for the longer Lines in the left hemispace than in the right hemispace, and with the right hand than with the left hand; this corresponds to the characteristics of neglect seen after right hemisphere lesions. All patients who bisected 200 mm Lines with errors over 10 mm showed disproportionate lowering of performance IQ and asymmetric right hemisphere hypoperfusion, especially in the temporoparietal region. Seventy-five percent of the patients performed normally in the center presentation but erred slightly toward the body midLine in the right and left hemispaces. Conclusion: Left unilateral spatial neglect in mild to moderate AD may be rather common if Tested with the Line Bisection Test. Rightward errors over 10 mm suggest right temporoparietal dysfunction. In AD, three or more Bisections of 200 mm Lines in the center presentation are recommended for detection of neglect. Patients with AD but without neglect may have difficulty in shifting attention into the peripheral sector of the egocentric space.
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Diverse patterns of performance in copying and severity of unilateral spatial neglect
Journal of Neurology, 1996Co-Authors: Keiko Seki, Sumio IshiaiAbstract:We analysed the performances of 69 patients with left unilateral spatial neglect in copying a multi-object figure, as well as their performance of the Line cancellation and Line Bisection Tests. Three patterns of copying were mainly observed. The first pattern was almost satisfactory performance in copying the central figure with occasional omission of the elements located more laterally to the left. The second pattern was omission of the left half of the whole figure, which was the pattern expected of patients with typical left unilateral spatial neglect. The third pattern was left unilateral spatial neglect when copying the central figure, with favourable copying of left lateral objects; this may be regarded as “object-centred” neglect. Performance of the Line cancellation Test, which requires exploratory ability, was significantly better for the patients with the third pattern than for those with the second pattern. A significant difference was also observed between the two groups of patients in performance of the Line Bisection Test, in which exploratory ability plays a more minor role. No significant difference was found in performance of the Line cancellation and Line Bisection Tests between the patients with the third and first patterns, in spite of remarkable differences in their copying performances. No distinctive characteristics were found for any group of patients as regards lesion, age, duration after onset, education, and WAJS scores. Therefore we concluded that in most of our patients with neglect, these diverse patterns of copying deficits resulted from different levels of neglect severity but not from different types of unilateral spatial neglect.
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Improvement of left unilateral spatial neglect in a Line extension task
Neurology, 1994Co-Authors: Sumio Ishiai, Sadakiyo Watabiki, M. Sugishita, T. Nakayama, M. Kotera, S. GonoAbstract:Patients with left unilateral spatial neglect following lesions that mainly involved the right parietal lobe performed a Line extension task, extending a horizontal Line leftward to double its original length. We examined Line extension performances in the left and right hemispaces, as well as in the midLine, to assess whether spatial conditions affected these performances. Whatever the severity of neglect found in the Line Bisection Test, the Line extension performances of the patients were almost accurate and comparable with those of normal controls across the three spatial conditions. The neglect patients executed movements in or toward the contralesional space as the task oriented their attention sufficiently to the left. The results suggest that the motor component, ie, directional hypokinesia, has little part in left unilateral spatial neglect due to right parietal lesions.
Min Ho Chun - One of the best experts on this subject based on the ideXlab platform.
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Effect of High- and Low-Frequency Repetitive Transcranial Magnetic Stimulation on Visuospatial Neglect in Patients With Acute Stroke: A Double-Blind, Sham-Controlled Trial
Archives of Physical Medicine and Rehabilitation, 2013Co-Authors: Min Ho ChunAbstract:Abstract Objective To compare the therapeutic effect of low- and high-frequency repetitive transcranial magnetic stimulation (rTMS) of the posterior parietal cortex (PPC) in patients with acute stroke with visuospatial neglect. Design This study was a prospective, double-blind, sham-controlled trial. Data are presented from 27 patients (15 men, 12 women; mean age, 67.0y) randomly assigned to receive 10 sessions of low-frequency (1Hz) rTMS over the nonlesioned PPC, high-frequency (10Hz) rTMS over the lesioned PPC, or sham stimulation. Setting National university hospital. Participants Patients (N=27) diagnosed with visuospatial neglect after stroke. Intervention Ten sessions of rTMS over a 2-week period. Main Outcome Measures The severity of visuospatial neglect was assessed pre- and posttreatment using the Motor-Free Visual Perception Test, Line Bisection Test, star cancellation Test, and Catherine Bergego Scale. Results When comparing the differences in the Motor-Free Visual Perception Test, Line Bisection Test, star cancellation Test, Catherine Bergego Scale, and Korean-Modified Barthel Index (K-MBI) scores before and after treatment according to group, we found that changes in the Line Bisection Test and K-MBI scores were significantly different between 3 groups. In the post hoc analysis, the improvement in the Line Bisection Test score in the high-frequency rTMS group was statistically significant compared with that in the sham stimulation group (high vs sham P =.03, low vs sham P =.09, high vs low P =.58), and the improvements in the K-MBI scores of the 2 rTMS groups were statistically significant compared with those in the sham stimulation group (high vs sham P P =.02, high vs low P =.75). Conclusions These results indicate that high-frequency rTMS is effective in the treatment of visuospatial neglect in patients with acute stroke.
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The Effect of Virtual Reality Training on Unilateral Spatial Neglect in Stroke Patients
Annals of Rehabilitation Medicine, 2011Co-Authors: Yong Mi Kim, Gi Jeong Yun, Young-jin Song, Min Ho Chun, Han Eun YoungAbstract:OBJECTIVE: To investigate the effect of virtual reality training on unilateral spatial neglect in stroke patients. METHOD: Twenty-four stroke patients (14 males and 10 females, mean age=64.7) who had unilateral spatial neglect as a result of right hemisphere stroke were recruited. All patients were randomly assigned to either the virtual reality (VR) group (n=12) or the control group (n=12). The VR group received VR training, which stimulated the left side of their bodies. The control group received conventional neglect therapy such as visual scanning training. Both groups received therapy for 30 minutes a day, five days per week for three weeks. Outcome measurements included star cancellation Test, Line Bisection Test, Catherine Bergego scale (CBS), and the Korean version of modified Barthel index (K-MBI). These measurements were taken before and after treatment. RESULTS: There were no significant differences in the baseLine characteristics and initial values between the two groups. The changes in star cancellation Test results and CBS in the VR group were significantly higher than those of the control group after treatment. The changes in Line Bisection Test score and the K-MBI in the VR group were not statistically significant. CONCLUSION: This study suggests that virtual reality training may be a beneficial therapeutic technique on unilateral spatial neglect in stroke patients.
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Effect of Computer-based Cognitive Rehabilitation on Unilateral Spatial Neglect in Stroke Patients
Annals of Rehabilitation Medicine, 2008Co-Authors: Min Ho ChunAbstract:Objective: To investigate the effect of computer-based cognitive rehabilitation on unilateral spatial neglect in stroke patients. Method: Twenty four stroke patients (7 men, 17 women) who had unilateral spatial neglect were recruited. Patients were randomly assigned to either case or control group. Case group received both classical neglect stimulation therapy (attention and compensation training) and computer-based cognitive rehabilitation, but control group received only classical neglect stimulation therapy. The effect of therapy was assessed with star cancellation Test, Line Bisection Test, MVPT (motor-free visual perception Test), and MBI (modified Barthel index). Results: Four weeks after the therapy, both group showed significant improvement in star cancellation Test, Line Bisection Test, MVPT, and MBI. But there was no statistically significant difference between control and case group with each evaluation tool after 4 weeks treatment (p＞0.05). Conclusion: Computer-based cognitive rehabilitation has no additional benefit to the treatment of hemi-spatial neglect in stroke patients. (J Korean Acad Rehab Med 2008; 32: 15-19)
Kenneth M Heilman - One of the best experts on this subject based on the ideXlab platform.
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Age-related changes in the allocation of spatially directed focal attention.
Aging Neuropsychology and Cognition, 2019Co-Authors: Aleksandra Mańkowska, Kenneth M Heilman, John B. Williamson, Jarosław M. Michałowski, Michał HarciarekAbstract:Objectives: Leftward deviation on a horizontal Line Bisection Test (pseudoneglect) might be induced by right hemispheric dominance for mediating spatial or global attention, or a hemispheric asymme...
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The Influence of Focused and Sustained Spatial Attention on the Allocation of Spatial Attention.
Journal of The International Neuropsychological Society, 2018Co-Authors: Damon G. Lamb, John B. Williamson, Kristi T. Balavage, Lauren A. Knight, Kenneth M HeilmanAbstract:Objective: The objective of this study was to evaluate the impact of directed and sustained attention on the allocation of visuospatial attention. Healthy people often have left lateral and upward vertical spatial attentional biases. However, it is not known whether there will be an increase in bias toward the attended portion of the stimulus when volitional spatial attention is allocated to a portion of a stimulus, whether there are asymmetrical spatial alterations of these biases, and how sustained attention influences these biases. Methods: We assessed spatial bias in 36 healthy, right-handed participants using a variant of horizontal and vertical Line Bisections. Participants were asked to focus on one or the other end of vertical or horizontal Lines or entire vertical or horizontal Lines, and then to bisect the Line either immediately or after a 20 second delay. Results: We found a significant main effect of attentional focus and an interaction between attentional focus and prolonged viewing with delayed Bisection. Focusing on a certain portion of the Line resulting in a significant deviation toward the attended portion and prolonged viewing of the Line prior to Bisection significantly enhanced the degree of deviation toward the attended portion. Conclusions: The enhanced bias with directed and sustained attention may be useful modifications of the Line Bisection Test, particularly in clinical populations. Thus, future studies should determine whether prolonged viewing with delayed Bisection and spatially focused attention reveals attentional biases in patients with hemispheric lesions who perform normally on the traditional Line Bisection Test. ( JINS , 2019, 25, 65–71)
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search patterns using the Line Bisection Test for neglect
Neurology, 1997Co-Authors: Jeffrey M Anderson, Kenneth M HeilmanAbstract:Background/Objective: Neglect has been attributed to sensory-attentional, motor-intentional, and representation disorders. Although patients with neglect may have defective visual exploration, the nature of this exploration deficit has not been entirely elucidated. The purpose of this study is to learn how, compared with control subjects, a patient with neglect performs visual exploration. Methods: The Line Bisection Test is commonly used to detect and evaluate the performance of patients with unilateral or hemispatial spatial neglect. We Tested an experimental subject with left premotor-intentional neglect using an infrared eye monitoring instrument. Thirteen right-handed healthy volunteers served as control subjects. From different starting ocular positions, we assessed the direction of eye movements when the subjects initially oriented to the Line, scanned the Line, and then attempted to look at the center of the Line. Results: Independent of starting ocular position, normal subjects most often initially orient to the left end of the Line, scan rightward, then look leftward to the center. However, the eye movements in our experimental subject with neglect were directed to the right end of the Line without any scanning or leftward eye movement back to the center of the Line. Conclusion: Our subject with neglect had defective Line exploration that may be attributed to a directional ocular motor intentional deficit.
Yong Mi Kim - One of the best experts on this subject based on the ideXlab platform.
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The Effect of Virtual Reality Training on Unilateral Spatial Neglect in Stroke Patients
Annals of Rehabilitation Medicine, 2011Co-Authors: Yong Mi Kim, Gi Jeong Yun, Young-jin Song, Min Ho Chun, Han Eun YoungAbstract:OBJECTIVE: To investigate the effect of virtual reality training on unilateral spatial neglect in stroke patients. METHOD: Twenty-four stroke patients (14 males and 10 females, mean age=64.7) who had unilateral spatial neglect as a result of right hemisphere stroke were recruited. All patients were randomly assigned to either the virtual reality (VR) group (n=12) or the control group (n=12). The VR group received VR training, which stimulated the left side of their bodies. The control group received conventional neglect therapy such as visual scanning training. Both groups received therapy for 30 minutes a day, five days per week for three weeks. Outcome measurements included star cancellation Test, Line Bisection Test, Catherine Bergego scale (CBS), and the Korean version of modified Barthel index (K-MBI). These measurements were taken before and after treatment. RESULTS: There were no significant differences in the baseLine characteristics and initial values between the two groups. The changes in star cancellation Test results and CBS in the VR group were significantly higher than those of the control group after treatment. The changes in Line Bisection Test score and the K-MBI in the VR group were not statistically significant. CONCLUSION: This study suggests that virtual reality training may be a beneficial therapeutic technique on unilateral spatial neglect in stroke patients.
