TY - GEN
T1 - Stable online control of an electrocorticographic brain-computer interface using a static decoder
AU - Ashmore, Robin C.
AU - Endler, Bridget M.
AU - Smalianchuk, Ivan
AU - Degenhart, Alan D.
AU - Hatsopoulos, Nicholas G.
AU - Tyler-Kabara, Elizabeth C.
AU - Batista, Aaron P.
AU - Wang, Wei
PY - 2012
Y1 - 2012
N2 - A brain computer interface (BCI) system was implemented by recording electrocorticographic signals (ECoG) from the motor cortex of a Rhesus macaque. These signals were used to control two-dimensional cursor movements in a standard center-out task, utilizing an optimal linear estimation (OLE) method. We examined the time course over which a monkey could acquire accurate control when operating in a co-adaptive training scheme. Accurate and maintained control was achieved after 4-5 days. We then held the decode parameters constant and observed stable control over the next 28 days. We also investigated the underlying neural strategy employed for control, asking whether neural features that were correlated with a given kinematic output (e.g. velocity in a certain direction) were clustered anatomically, and whether the features were coordinated or conflicting in their contributions to the control signal.
AB - A brain computer interface (BCI) system was implemented by recording electrocorticographic signals (ECoG) from the motor cortex of a Rhesus macaque. These signals were used to control two-dimensional cursor movements in a standard center-out task, utilizing an optimal linear estimation (OLE) method. We examined the time course over which a monkey could acquire accurate control when operating in a co-adaptive training scheme. Accurate and maintained control was achieved after 4-5 days. We then held the decode parameters constant and observed stable control over the next 28 days. We also investigated the underlying neural strategy employed for control, asking whether neural features that were correlated with a given kinematic output (e.g. velocity in a certain direction) were clustered anatomically, and whether the features were coordinated or conflicting in their contributions to the control signal.
UR - http://www.scopus.com/inward/record.url?scp=84880768639&partnerID=8YFLogxK
U2 - 10.1109/EMBC.2012.6346285
DO - 10.1109/EMBC.2012.6346285
M3 - Conference contribution
C2 - 23366246
AN - SCOPUS:84880768639
SN - 9781424441198
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 1740
EP - 1744
BT - 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2012
T2 - 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS 2012
Y2 - 28 August 2012 through 1 September 2012
ER -