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Psychological predictors of SMR-BCI performance

 
: Hammer, E.M.; Halder, S.; Blankertz, B.; Sannelli, C.; Dickhaus, T.; Kleih, S.; Müller, K.-R.; Kübler, A.

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Biological Psychology 89 (2012), No.1, pp.80-86
ISSN: 0301-0511
ISSN: 1873-6246
English
Journal Article
Fraunhofer FIRST ()

Abstract
Background: After about 30 years of research on Brain-Computer Interfaces (BCIs) there is little knowledge about the phenomenon, that some people - healthy as well as individuals with disease - are not able to learn BCI-control. To elucidate this "BCI-inefficiency" phenomenon, the current study investigated whether psychological parameters, such as attention span, personality or motivation, could predict performance in a single session with a BCI controlled by modulation of sensorimotor rhythms (SMR) with motor imagery. Methods: A total of N = 83 healthy BCI novices took part in the session. Psychological parameters were measured with an electronic test-battery including clinical, personality and performance tests. Predictors were determined by binary logistic regression analyses. Results: The output variable of the Two-Hand Coordination Test (2HAND) "overall mean error duration" which is a measure for the accuracy of fine motor skills accounted for 11% of the variance in BCI-inefficiency. The Attitudes Towards Work (AHA) test variable "performance level" which can be interpreted as a degree of concentration and a neurophysiological SMR predictor were also identified as significant predictors of SMR BCI performance. Conclusion: Psychological parameters as measured in this study play a moderate role for one-session performance in a BCI controlled by modulation of SMR.

: http://publica.fraunhofer.de/documents/N-189070.html