01235nas a2200217   4500008004100000022001400041245012500055210006900180260000800249520053300257100002100790700002000811700002000831700001900851700001900870700001800889700002200907700001600929700002400945856004800969       2017                        eng d  a1524-462800aContralesional Brain-Computer Interface Control of a Powered Exoskeleton for Motor Recovery in Chronic Stroke Survivors.0 aContralesional BrainComputer Interface Control of a Powered Exos  cMay3 aThere are few effective therapies to achieve functional recovery from motor-related disabilities affecting the upper limb after stroke. This feasibility study tested whether a powered exoskeleton driven by a brain-computer interface (BCI), using neural activity from the unaffected cortical hemisphere, could affect motor recovery in chronic hemiparetic stroke survivors. This novel system was designed and configured for a home-based setting to test the feasibility of BCI-driven neurorehabilitation in outpatient environments.1 aBundy, David, T.1 aSouders, Lauren1 aBaranyai, Kelly1 aLeonard, Laura1 aSchalk, Gerwin1 aCoker, Robert1 aMoran, Daniel, W.1 aHuskey, Thy1 aLeuthardt, Eric, C.  uhttp://www.ncbi.nlm.nih.gov/pubmed/2855009801925nas a2200265   4500008004100000245010300041210006900144260000800213300001100221490000600232520106300238653000801301653003001309653000901339653002501348653002501373100002001398700001901418700001801437700002401455700002601479700001901505700001901524856011601543       2016                        eng d00aDifferential roles of high gamma and local motor potentials for movement preparation and execution0 aDifferential roles of high gamma and local motor potentials for   cMay  a88-1020 v33 aDetermining a person’s intent, such as the planned direction of their movement, directly from their cortical activity could support important applications such as brain-computer interfaces (BCIs). Continuing development of improved BCI systems requires a better understanding of how the brain prepares for and executes movements. To contribute to this understanding, we recorded surface cortical potentials (electrocorticographic signals; ECoG) in 11 human subjects performing a delayed center-out task to establish the differential role of high gamma activity (HGA) and the local motor potential (LMP) as a function of time and anatomical area during movement preparation and execution. High gamma modulations mostly confirm previous findings of sensorimotor cortex involvement, whereas modulations in LMPs are observed in prefrontal cortices. These modulations include directional information during movement planning as well as execution. Our results suggest that sampling signals from these widely distributed cortical areas improves decoding accuracy.10aBCI10abrain-computer interfaces10aECoG10aElectrocorticography10asensorimotor systems1 aGunduz, Aysegul1 aBrunner, Peter1 aSharma, Mohit1 aLeuthardt, Eric, C.1 aRitaccio, Anthony, L.1 aPesaran, Bijan1 aSchalk, Gerwin  uhttps://neurotechcenter.org/publications/2016/differential-roles-high-gamma-and-local-motor-potentials-movement