Detection of error related neuronal responses recorded by electrocorticography in humans during continuous movements.
Detection of error related neuronal responses recorded by electrocorticography in humans during continuous movements.
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DOI：
10.1371/journal.pone.0055235
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Mehring C
中科院分区：
文献类型：
--
作者：
Milekovic T;Ball T;Schulze-Bonhage A;Aertsen A;Mehring C
Brain-machine interfaces (BMIs) can translate the neuronal activity underlying a user’s movement intention into movements of an artificial effector. In spite of continuous improvements, errors in movement decoding are still a major problem of current BMI systems. If the difference between the decoded and intended movements becomes noticeable, it may lead to an execution error. Outcome errors, where subjects fail to reach a certain movement goal, are also present during online BMI operation. Detecting such errors can be beneficial for BMI operation: (i) errors can be corrected online after being detected and (ii) adaptive BMI decoding algorithm can be updated to make fewer errors in the future. Here, we show that error events can be detected from human electrocorticography (ECoG) during a continuous task with high precision, given a temporal tolerance of 300–400 milliseconds. We quantified the error detection accuracy and showed that, using only a small subset of 2×2 ECoG electrodes, 82% of detection information for outcome error and 74% of detection information for execution error available from all ECoG electrodes could be retained. The error detection method presented here could be used to correct errors made during BMI operation or to adapt a BMI algorithm to make fewer errors in the future. Furthermore, our results indicate that smaller ECoG implant could be used for error detection. Reducing the size of an ECoG electrode implant used for BMI decoding and error detection could significantly reduce the medical risk of implantation.
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影响因子：
--
作者：
Bashashati A;Ward RK;Birch GE
通讯作者：
Birch GE
DOI：
10.1523/jneurosci.2081-09.2009
发表时间：
2009-11-11
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Hwang EJ;Andersen RA
通讯作者：
Andersen RA
影响因子：
4.6
作者：
Ferrez, Pierre W.;Millan, Jose del R.
通讯作者：
Millan, Jose del R.
影响因子：
8.2
作者：
GEHRING, WJ;GOSS, B;DONCHIN, E
通讯作者：
DONCHIN, E
影响因子：
64.8
作者：
Hochberg, Leigh R.;Serruya, Mijail D.;Donoghue, John P.
通讯作者：
Donoghue, John P.