Kang Kyurim, Thaut Michael H
Music and Health Science Research Collaboratory (MaHRC), Faculty of Music, University of Toronto, Toronto, ON, Canada.
Collaborative Programs in Neuroscience (CPIN), University of Toronto, Toronto, ON, Canada.
Front Neurol. 2019 May 8;10:474. doi: 10.3389/fneur.2019.00474. eCollection 2019.
Unilateral visual neglect from right hemispheric stroke is a condition that reduces a person's ability to attend to and process stimuli in their left visual field, resulting in neglect and inattention to the left side of their environment. This perceptual processing deficit can negatively affect individuals' daily living which in turn reduces functional independence. Musical Neglect Training (MNT) has been developed based on previous research evidence to improve left visual field processing. Two individuals with persistent chronic unilateral visual neglect participated in this study. Participants underwent six individual MNT sessions. Active MNT was used involving exercises on musical equipment (tone bars) to complete musical patterns emphasizing attentional focus toward the neglect visual field. Two standardized assessments (Albert's and Line Bisection Test) were used. The assessments were administered immediately before and after each of the 6 MNT sessions to assess the within-session effect of MNT. Follow-up testing was done 1 week after their 6th session to examine the longer-lasting effects of MNT. Paired -test and Wilcoxon signed rank test were used to examine results. Both participants showed significant improvement pre vs. posttest on the Albert's Test but not on the Line Bisection Test. The current study presents the positive potential of MNT for patients with chronic persistent visual neglect. In particular, effects were shown for exploratory visuomotor neglect (Albert's test), but not for egocentric perceptive neglect (Line Bisection Test), and substantiated for within-session effects only. The predictable auditory stimulus patterns associated with object sequences (tone bars) to provide feedback, direct spatial attention and orientation, and initiate intention for movement into the neglect field may offer specific advantages to reduce persistent perceptual attention deficits.
右半球卒中导致的单侧视觉忽视是一种会降低个体关注和处理左视野刺激能力的病症,从而导致对其环境左侧的忽视和注意力不集中。这种感知处理缺陷会对个体的日常生活产生负面影响,进而降低功能独立性。基于先前的研究证据开发了音乐忽视训练(MNT)来改善左视野处理。两名患有持续性慢性单侧视觉忽视的个体参与了这项研究。参与者接受了六次个人MNT训练。使用了主动MNT,包括在音乐设备(音条)上进行练习以完成音乐模式,强调对忽视视野的注意力集中。使用了两项标准化评估(阿尔伯特测试和直线二等分测试)。在6次MNT训练的每次训练前后立即进行评估,以评估MNT的训练期间效果。在第6次训练后1周进行随访测试,以检查MNT的长期效果。使用配对检验和威尔科克森符号秩检验来检查结果。两名参与者在阿尔伯特测试中前后测显示出显著改善,但在直线二等分测试中没有。当前的研究展示了MNT对慢性持续性视觉忽视患者的积极潜力。特别是,对探索性视觉运动忽视(阿尔伯特测试)有效果,但对自我中心感知忽视(直线二等分测试)没有效果,并且仅在训练期间效果得到证实。与物体序列(音条)相关的可预测听觉刺激模式,用于提供反馈、引导空间注意力和方向,并引发向忽视视野移动的意图,可能具有减少持续性感知注意力缺陷的特定优势。