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An auditory brain-computer interface (BCI). ​

文献信息 ​

DOI10.1016/j.jneumeth.2007.02.009
PMID17399797
期刊Journal of neuroscience methods
影响因子2.3
JCR 分区Q3
发表年份2008
被引次数100
关键词脑机接口, 听觉反馈, 传感运动节律, 训练, 情绪与动机
文献类型Journal Article, Research Support, N.I.H., Extramural, Research Support, Non-U.S. Gov't
ISSN0165-0270
页码43-50
期号167(1)
作者Femke Nijboer, Adrian Furdea, Ingo Gunst, Jürgen Mellinger, Dennis J McFarland, Niels Birbaumer, Andrea Kübler

一句话小结 ​

本研究探讨了听觉脑-计算机接口（BCI）的可行性，发现经过足够的训练，听觉BCI的效果可以与视觉BCI相当，尽管学习速度较慢。结果表明，情绪和动机在BCI学习过程中起着重要作用，为视觉功能受损患者提供了新的沟通方式。

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脑机接口 · 听觉反馈 · 传感运动节律 · 训练 · 情绪与动机

摘要 ​

脑-计算机接口（BCI）将脑活动转化为控制外部设备的信号。基于视觉刺激的BCI可以在严重瘫痪的患者中维持沟通，但前提是患者必须具备完整的视觉能力。然而，某些严重的神经系统疾病可能导致视觉功能的丧失。本研究探讨了一种听觉BCI的可行性。十六名健康志愿者参加了三次训练，每次训练包含30个2-3分钟的环节，他们在此过程中学习如何增加或减少脑电图（EEG）传感运动节律（SMR）的幅度。参与者中一半接受视觉反馈，另一半接受听觉反馈。每次训练前评估了参与者的情绪和动机。尽管视觉反馈组的BCI表现优于听觉反馈组，但在第三次训练结束时，两个组的表现并无显著差异。听觉反馈组的参与者学习速度较慢，但在最后一节中，有四名参与者的准确率超过70%，与视觉反馈组相当。视觉反馈组中某些参与者的表现下降与情绪和动机有关。我们得出结论，经过足够的训练时间，听觉BCI可能与视觉BCI同样有效。情绪和动机在学习使用BCI的过程中起着重要作用。

英文摘要 ​

Brain-computer interfaces (BCIs) translate brain activity into signals controlling external devices. BCIs based on visual stimuli can maintain communication in severely paralyzed patients, but only if intact vision is available. Debilitating neurological disorders however, may lead to loss of intact vision. The current study explores the feasibility of an auditory BCI. Sixteen healthy volunteers participated in three training sessions consisting of 30 2-3 min runs in which they learned to increase or decrease the amplitude of sensorimotor rhythms (SMR) of the EEG. Half of the participants were presented with visual and half with auditory feedback. Mood and motivation were assessed prior to each session. Although BCI performance in the visual feedback group was superior to the auditory feedback group there was no difference in performance at the end of the third session. Participants in the auditory feedback group learned slower, but four out of eight reached an accuracy of over 70% correct in the last session comparable to the visual feedback group. Decreasing performance of some participants in the visual feedback group is related to mood and motivation. We conclude that with sufficient training time an auditory BCI may be as efficient as a visual BCI. Mood and motivation play a role in learning to use a BCI.

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主要研究问题 ​

  1. 在听觉脑机接口的训练过程中，如何优化参与者的情绪和动机以提高学习效果？
  2. 与视觉反馈相比，听觉反馈在不同类型的脑电图信号解码中有哪些独特的优势和挑战？
  3. 研究表明，听觉BCI的学习速度较慢，这种现象是否与个体的听觉处理能力有关？
  4. 听觉BCI的应用潜力如何，特别是在视力受损的患者中，是否有临床案例支持这一点？
  5. 在未来的研究中，如何进一步改进听觉BCI的设计以提高其性能和用户体验？

核心洞察 ​

研究背景和目的 ​

随着神经系统疾病的普遍增加，许多患者面临严重的运动障碍，特别是“锁定状态”(Locked-in State, LIS)患者，虽然意识清醒，但无法进行任何肌肉运动。传统的脑机接口（BCI）多依赖于视觉反馈，而许多患者的视觉功能受损。因此，研究人员探索了基于听觉反馈的BCI的可行性，以为这些患者提供沟通的可能性。

主要方法/材料/实验设计 ​

本研究招募了16名健康志愿者，分为听觉反馈组和视觉反馈组。每组参与者进行了三次训练，每次包含30个2-3分钟的训练环节，旨在通过想象运动来调节脑电图（EEG）中的感觉运动节律（SMR）。参与者的情绪和动机在每次训练前进行评估。

实验设计流程图 ​

Mermaid diagram
  • 视觉反馈：参与者通过屏幕上的光标移动来控制目标，光标的移动由SMR的幅度决定。
  • 听觉反馈：通过声音反馈（如木琴和鼓声）来表示SMR的同步和去同步，参与者需根据声音的变化来调节SMR。

关键结果和发现 ​

  • 在前三次训练中，视觉反馈组的表现优于听觉反馈组，第一轮的准确率为74.1% vs 55.96%。
  • 然而，在最后一轮训练中，听觉反馈组的表现有所提升，四名参与者达到了70%以上的准确率，与视觉反馈组相当。
  • 心理变量（如情绪和动机）对BCI的表现有显著影响，视觉反馈组的表现与良好的情绪和高的自信心相关，而听觉反馈组则主要受“无能恐惧”影响。

主要结论/意义/创新性 ​

本研究表明，经过足够的训练，基于听觉反馈的BCI在性能上可以与基于视觉反馈的BCI相媲美。尽管初期学习速度较慢，但听觉反馈的可行性为视力受损的患者提供了新的沟通方式。研究还强调了心理因素在BCI学习过程中的重要性。

研究局限性和未来方向 ​

  • 研究仅在健康志愿者中进行，未来应在实际的LIS患者中进行类似研究，以验证听觉BCI的有效性。
  • 研究未深入探讨不同类型的听觉反馈对学习过程的影响，未来可探索多种听觉刺激的效果。
  • 需进一步研究情绪和动机等心理因素对BCI性能的长期影响，尤其是在神经疾病患者中的表现。
研究要素视觉反馈组听觉反馈组
初始表现较高较低
最终表现相对稳定提升明显
心理因素积极影响恐惧影响

参考文献 ​

  1. Effects of acute tryptophan depletion on executive function in healthy male volunteers. - Peter Gallagher;Anna E Massey;Allan H Young;R Hamish McAllister-Williams - BMC psychiatry (2003)
  2. Brain-computer communication: unlocking the locked in. - A Kübler;B Kotchoubey;J Kaiser;J R Wolpaw;N Birbaumer - Psychological bulletin (2001)
  3. Brain-computer communication: self-regulation of slow cortical potentials for verbal communication. - A Kübler;N Neumann;J Kaiser;B Kotchoubey;T Hinterberger;N P Birbaumer - Archives of physical medicine and rehabilitation (2001)
  4. Patients with ALS can use sensorimotor rhythms to operate a brain-computer interface. - A Kübler;F Nijboer;J Mellinger;T M Vaughan;H Pawelzik;G Schalk;D J McFarland;N Birbaumer;J R Wolpaw - Neurology (2005)
  5. Effect of feedback signal and psychological characteristics on blood pressure self-manipulation capability. - S K Lal;R J Henderson;N Carter;A Bath;M G Hart;P Langeluddecke;S N Hunyor - Psychophysiology (1998)
  6. A spelling device for the paralysed. - N Birbaumer;N Ghanayim;T Hinterberger;I Iversen;B Kotchoubey;A Kübler;J Perelmouter;E Taub;H Flor - Nature (1999)
  7. A P300-based brain-computer interface: initial tests by ALS patients. - Eric W Sellers;Emanuel Donchin - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology (2006)
  8. A binary spelling interface with random errors. - J Perelmouter;N Birbaumer - IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society (2000)
  9. A multimodal brain-based feedback and communication system. - Thilo Hinterberger;Nicola Neumann;Mirko Pham;Andrea Kübler;Anke Grether;Nadine Hofmayer;Barbara Wilhelm;Herta Flor;Niels Birbaumer - Experimental brain research (2004)
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引用本文的文献 ​

  1. Vibrotactile feedback for brain-computer interface operation. - Febo Cincotti;Laura Kauhanen;Fabio Aloise;Tapio Palomäki;Nicholas Caporusso;Pasi Jylänki;Donatella Mattia;Fabio Babiloni;Gerolf Vanacker;Marnix Nuttin;Maria Grazia Marciani;José Del R Millán - Computational intelligence and neuroscience (2007)
  2. Brain-computer interfaces and communication in paralysis: extinction of goal directed thinking in completely paralysed patients? - A Kübler;N Birbaumer - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology (2008)
  3. Toward a high-throughput auditory P300-based brain-computer interface. - D S Klobassa;T M Vaughan;P Brunner;N E Schwartz;J R Wolpaw;C Neuper;E W Sellers - Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology (2009)
  4. Neural interface technology for rehabilitation: exploiting and promoting neuroplasticity. - Wei Wang;Jennifer L Collinger;Monica A Perez;Elizabeth C Tyler-Kabara;Leonardo G Cohen;Niels Birbaumer;Steven W Brose;Andrew B Schwartz;Michael L Boninger;Douglas J Weber - Physical medicine and rehabilitation clinics of North America (2010)
  5. A new auditory multi-class brain-computer interface paradigm: spatial hearing as an informative cue. - Martijn Schreuder;Benjamin Blankertz;Michael Tangermann - PloS one (2010)
  6. (C)overt attention and visual speller design in an ERP-based brain-computer interface. - Matthias S Treder;Benjamin Blankertz - Behavioral and brain functions : BBF (2010)
  7. The influence of psychological state and motivation on brain-computer interface performance in patients with amyotrophic lateral sclerosis - a longitudinal study. - Femke Nijboer;Niels Birbaumer;Andrea Kübler - Frontiers in neuroscience (2010)
  8. Combining Brain-Computer Interfaces and Assistive Technologies: State-of-the-Art and Challenges. - J D R Millán;R Rupp;G R Müller-Putz;R Murray-Smith;C Giugliemma;M Tangermann;C Vidaurre;F Cincotti;A Kübler;R Leeb;C Neuper;K-R Müller;D Mattia - Frontiers in neuroscience (2010)
  9. Neuroengineering tools/applications for bidirectional interfaces, brain-computer interfaces, and neuroprosthetic implants - a review of recent progress. - Ryan Mark Rothschild - Frontiers in neuroengineering (2010)
  10. A Novel 9-Class Auditory ERP Paradigm Driving a Predictive Text Entry System. - Johannes Höhne;Martijn Schreuder;Benjamin Blankertz;Michael Tangermann - Frontiers in neuroscience (2011)

... (90 更多 篇文献)

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