Daeglau Mareike, Zich Catharina, Welzel Julius, Saak Samira Kristina, Scheffels Jannik Florian, Kranczioch Cornelia
Neurocognition and Functional Neurorehabilitation Group, Neuropsychology Lab, Depart-ment of Psychology, School of Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, 26111, Oldenburg, Germany.
Department of Clinical and Movement Neuroscience, UCL Queen Square Institute of Neurology, WC1N 3BG, London, UK.
Neuroimage Rep. 2021 Oct 12;1(4):100058. doi: 10.1016/j.ynirp.2021.100058. eCollection 2021 Dec.
Motor imagery (MI) in combination with neurofeedback (NF) is a promising supplement to facilitate the acquisition of motor abilities and the recovery of impaired motor abilities following brain injuries. However, the ability to control MI NF is subject to a wide range of inter-individual variability. A substantial number of users experience difficulties in achieving good results, which compromises their chances to benefit from MI NF in a learning or rehabilitation context. It has been suggested that context factors, that is, factors outside the actual motor task, can explain individual differences in motor skill acquisition. Retrospective declarative interference and sleep have already been identified as critical factors for motor execution (ME) and MI based practice. Here, we investigate whether these findings generalize to practicing MI NF. Three groups underwent three blocks of practicing MI with NF, each on two subsequent days. In two of the groups, MI NF blocks were followed by either immediate or delayed declarative memory tasks. The control group performed only MI NF and no specific interference tasks. Two of the MI NF blocks were run on the first day of the experiment, the third in the morning of the second day. Significant within-block NF gains in mu and beta frequency event-related desynchronization (ERD) where evident for all groups. However, data did not provide evidence for an impact of immediate or delayed declarative interference on MI NF ERD. Also, MI NF ERD remained unchanged after a night of sleep. We did not observe the expected pattern of results for MI NF ERD with regard to declarative interference and a night of sleep. This is discussed in the context of variable experimental task designs, inter-individual differences, and performance measures.
运动想象（MI）与神经反馈（NF）相结合是一种很有前景的辅助手段，有助于获得运动能力以及脑损伤后受损运动能力的恢复。然而，控制MI NF的能力存在广泛的个体差异。相当多的用户在取得良好效果方面存在困难，这影响了他们在学习或康复环境中从MI NF中获益的机会。有人提出，情境因素，即实际运动任务之外的因素，可以解释运动技能习得中的个体差异。回顾性陈述性干扰和睡眠已被确定为运动执行（ME）和基于MI的练习的关键因素。在此，我们研究这些发现是否适用于MI NF练习。三组人员在连续两天内进行了三个MI与NF结合的练习块。在其中两组中，MI NF练习块之后紧接着进行即时或延迟的陈述性记忆任务。对照组只进行MI NF，不进行特定的干扰任务。其中两个MI NF练习块在实验的第一天进行，第三个在第二天上午进行。所有组在μ和β频率事件相关去同步化（ERD）方面均出现了显著的组内NF增益。然而，数据并未提供即时或延迟陈述性干扰对MI NF ERD有影响的证据。同样，经过一夜睡眠后，MI NF ERD保持不变。我们没有观察到关于陈述性干扰和一夜睡眠的MI NF ERD的预期结果模式。将在可变的实验任务设计、个体差异和性能测量的背景下对此进行讨论。
