Evidence map›Paper›PMID 35318316›Full record

ArticleNature communications2022

Spelling interface using intracortical signals in a completely locked-in patient enabled via auditory neurofeedback training.

Ujwal Chaudhary, Ioannis Vlachos, Jonas B Zimmermann, Arnau Espinosa, Alessandro Tonin, Andres Jaramillo-Gonzalez, Majid Khalili-Ardali, Helge Topka, Jens Lehmberg, Gerhard M Friehs and 3 more

Abstract read
In one paragraph

Article in Nature communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Article
  6. Review
  7. [Research on auditory neurofeedback technology and its multi-disciplinary applications].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2026
    Review
  8. Review
  9. Article
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  11. Brain-computer interface: an update for the clinicians.Frontiers in human neuroscience · 2026
    Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Article
  18. Review
  19. Article
  20. Acoustic Inspired Brain-to-Sentence Decoder for Logosyllabic Language.Cyborg and bionic systems (Washington, D.C.) · 2025
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

13 authors.

Ujwal Chaudhary *ALS Voice gGmbH, Mössingen, Germany. chaudharyujwal@gmail.com.ORCID 0000-0002-7887-1012
Ioannis Vlachos *Wyss Center for Bio and Neuroengineering, Geneva, Switzerland.
Jonas B Zimmermann *Wyss Center for Bio and Neuroengineering, Geneva, Switzerland. jonas.zimmermann@wysscenter.ch.ORCID 0000-0001-9225-2595
Arnau EspinosaWyss Center for Bio and Neuroengineering, Geneva, Switzerland.ORCID 0000-0002-3268-0907
Alessandro ToninWyss Center for Bio and Neuroengineering, Geneva, Switzerland.
Andres Jaramillo-GonzalezInstitute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany.ORCID 0000-0003-3751-5051
Majid Khalili-ArdaliInstitute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany.ORCID 0000-0001-9154-6970
Helge TopkaDepartment of Neurology, Clinical Neurophysiology, Cognitive Neurology and Stroke Unit, München Klinik Bogenhausen, Munich, Germany.
Jens LehmbergDepartment of Neurosurgery, München Klinik Bogenhausen, Munich, Germany.
Gerhard M FriehsNeurosurgery Department, European University, Nicosia, Cyprus.
Alain WoodtliWyss Center for Bio and Neuroengineering, Geneva, Switzerland.
John P DonoghueCarney Brain Institute, Brown University, Providence, RI, USA.
Niels BirbaumerInstitute of Medical Psychology and Behavioral Neurobiology, University of Tübingen, Tübingen, Germany. niels.birbaumer@uni-tuebingen.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Patients with amyotrophic lateral sclerosis (ALS) can lose all muscle-based routes of communication as motor neuron degeneration progresses, and ultimately, they may be left without any means of communication. While others have evaluated communication in people with remaining muscle control, to the best of our knowledge, it is not known whether neural-based communication remains possible in a completely locked-in state. Here, we implanted two 64 microelectrode arrays in the supplementary and primary motor cortex of a patient in a completely locked-in state with ALS. The patient modulated neural firing rates based on auditory feedback and he used this strategy to select letters one at a time to form words and phrases to communicate his needs and experiences. This case study provides evidence that brain-based volitional communication is possible even in a completely locked-in state.

Indexed as

Amyotrophic Lateral SclerosisBrain-Computer InterfacesNeurofeedbackBrainElectroencephalographyHumansLanguageMale

Identifiers

PMID35318316
PMCPMC8941070

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.