Two-dimensional movement control using electrocorticographic signals in humans

J Neural Eng. 2008 Mar;5(1):75-84. doi: 10.1088/1741-2560/5/1/008. Epub 2008 Feb 1.


We show here that a brain-computer interface (BCI) using electrocorticographic activity (ECoG) and imagined or overt motor tasks enables humans to control a computer cursor in two dimensions. Over a brief training period of 12-36 min, each of five human subjects acquired substantial control of particular ECoG features recorded from several locations over the same hemisphere, and achieved average success rates of 53-73% in a two-dimensional four-target center-out task in which chance accuracy was 25%. Our results support the expectation that ECoG-based BCIs can combine high performance with technical and clinical practicality, and also indicate promising directions for further research.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Adolescent
  • Adult
  • Brain Mapping
  • Data Interpretation, Statistical
  • Drug Resistance
  • Electrocardiography
  • Electrodes, Implanted
  • Electroencephalography / instrumentation*
  • Epilepsy / physiopathology
  • Epilepsy / surgery
  • Female
  • Humans
  • Male
  • Movement / physiology*
  • User-Computer Interface*