Annals of Rehabilitation Medicine

Comparison of Effects of Repetitive Transcranial Magnetic Stimulation with High- or Low-frequency on Visuospatial Neglect in Stroke Patients.: Kim, Ji Sung , Kim, Jong Chan , Shin, Sung Hun , Kim, Yong Kyun; J Korean Acad Rehabil Med 2010;34(4):397-402.

Abstract
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Objective
To compare the effect of repetitive transcranial magnetic stimulation (rTMS) applied over the right or left parietal cortex with high- or low-frequency on visuospatial neglect in stroke patients. Method: Nineteen stroke subjects (10 males, 9 females) were enrolled. All subjects received 1,200 real rTMS over left parietal cortex at an intensity of 90% of motor thresholds with 1 Hz, sham rTMS over right parietal cortex with 20 Hz and real rTMS over right parietal cortex at same intensity with 20 Hz under randomized cross over design. To compare the effects of different rTMS protocols, letter cancellation test, line bisection test (near, far) and Ota's task were administered before and after rTMS. Results: Low frequency rTMS over left parietal cortex, compared with sham stimulation, significantly improve visuospatial neglect in Ota's task (p＜0.05). Conclusion: As low frequency rTMS over left parietal cortex showed beneficial effects on visuospatial neglect, low frequency rTMS can be used as a treatment modality for patients suffering from visuospatial neglect after stroke. (J Korean Acad Rehab Med 2010; 34: 397-402)

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Clinical Usefulness of Computer Assisted Line Bisection Task for the Assessment of Sensory-Attenional Aspect of Visuospatial Neglect.: Park, Sung Joon , Lee, Hee Dae , Min, Su Jung , Park, Se Hun , Lee, Peter K W , Kim, Yun Hee; J Korean Acad Rehabil Med 2006;30(1):1-6.

Abstract
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Objective
To assess the clinical usefulness of computer- assisted line bisection task for the patients with sensory- attentional visuospatial neglect. Method: Forty patients with unilateral hemispheric stroke (25 right, 15 left) and 15 normal age-matched subjects participated in this study. Computer-assisted line bisection task (CALBT) was designed using modified Milner landmark test to assess the sensory-attentional aspect of visuospatial neglect. Accuracy of response and reaction time for the transected lines, and response rate for the bisected lines were measured. Correlation between the results of CALBT and conventional line bisection test and Albert test was evaluated. Results: In patients with right hemispheric lesion, resultsof CALBT demonstrated shifting of attention to the right hemifield and neglect of the stimulus in the left hemifield. In contrast, patients with left hemispheric lesion showed significantly decreased attention to the right hemifield and shifting of attention to the left hemifield. Performances of CALBT correlated with the line bisection test, but not with the Albert test. Conclusion: Computed assisted line bisection task can be used for the quantitative assessment of the sensory attentional aspect of visuospatial attention in patients with unilateral neglect. (J Korean Acad Rehab Med 2006; 30: 1-6)

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The Effect of the Prism Therapy on the Stroke Patients with the Visuospatial Neglect Preliminary Study.: Han, Tai Ryoon , Shin, Hyung Ik , Kim, Sang Jun; J Korean Acad Rehabil Med 2001;25(3):412-417.

Abstract
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Objective: To investigate the effect of the prism which deviates the optical axis 10 degree rightward in the stroke patients who have visuospatial neglect and to evaluate how long it will last.

Method: The subjects were 9 left hemiplegic patients who showed the feature of hemineglect. The prism goggle was applied and the patients were trained the midline point direction exercise. It's effect was evaluated by the line bisection test and the Albert test at the pre-training, immediate, 2 hours and 6 hours after the training respectively.

Results: The line bisection test and Albert test were not improved significantly at each evaluation time after the training.

Conclusion: This result revealed the prism therapy does not have a significant effect on the line bisection task and Albert test in the hemineglect patients consistently. The line bisection result in the line located in the left or right side at the 2 hours after the training was improved but it could not exclude the training effect of the repetition of the test.