Brain Topography

, Volume 27, Issue 1, pp 4–11 | Cite as

Direct Brain Control and Communication in Paralysis

  • Niels Birbaumer
  • Guillermo Gallegos-Ayala
  • Moritz Wildgruber
  • Stefano Silvoni
  • Surjo R. Soekadar
Review

Abstract

Despite considerable growth in the field of brain-computer or brain-machine interface (BCI/BMI) research reflected in several hundred publications each year, little progress was made to enable patients in complete locked-in state (CLIS) to reliably communicate using their brain activity. Independent of the invasiveness of the BCI systems tested, no sustained direct brain control and communication was demonstrated in a patient in CLIS so far. This suggested a more fundamental theoretical problem of learning and attention in brain communication with BCI/BMI, formulated in the extinction-of-thought hypothesis. While operant conditioning and goal-directed thinking seems impaired in complete paralysis, classical conditioning of brain responses might represent the only alternative. First experimental studies in CLIS using semantic conditioning support this assumption. Evidence that quality-of-life in locked-in-state is not as limited and poor as generally believed draise doubts that “patient wills” or “advanced directives”signed long-before the locked-in-state are useful. On the contrary, they might be used as an excuse to shorten anticipated long periods of care for these patients avoiding associated financial and social burdens. Current state and availability of BCI/BMI systems urge a broader societal discourse on the pressing ethical challenges associated with the advancements in neurotechnology and BCI/BMI research.

Keywords

Brain-computer interface Complete locked-in state Paralysis Patient will 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Niels Birbaumer
    • 1
    • 2
  • Guillermo Gallegos-Ayala
    • 1
    • 3
    • 4
  • Moritz Wildgruber
    • 5
  • Stefano Silvoni
    • 2
  • Surjo R. Soekadar
    • 1
    • 6
  1. 1.Institute of Medical Psychology and Behavioral NeurobiologyUniversity of TübingenTübingenGermany
  2. 2.Ospedale San Camillo, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS)VeneziaItaly
  3. 3.Graduate School of Neural Information Processing, International Max Planck Research SchoolTübingenGermany
  4. 4.Escuela Superior Politécnica del Litoral (ESPOL)GuayaquilEcuador
  5. 5.Institut für RadiologieKlinikum Rechts der IsarMunichGermany
  6. 6.Applied Neurotechnology Lab, Department of Psychiatry and PsychotherapyUniversity of TübingenTübingenGermany

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