Extracting attempted hand movements from EEGs in people with complete hand paralysis following stroke
- Тип контента: Научная статья
- Номер документа: 7623
- Название документа: Extracting attempted hand movements from EEGs in people with complete hand paralysis following stroke
- Номер (DOI, IBSN, Патент): 1662-453X
- Изобретатель/автор: Dawn Taylor
- Правопреемник/учебное заведение: Case Western Reserve University, Department of Neurosciences, The Cleveland Clinic, Department of Orthopaedics, MetroHealth Medical Center, Cleveland Functional Electrical Stimulation (FES) Center of Excellence, Louis Stokes VA Medical Center
- Дата публикации документа: 2011-03-12
- Страна опубликовавшая документ: США
- Язык документа: Английский
- Наименование изделия: Не заполнено
- Источник: Fronties in Neuroprosthetics
- Вложения: Да
- Аналитик: Глаголева Елена
This study examines the feasibility of using electroencephalograms (EEGs) to rapidly detect the intent to open one’s hand in individuals with complete hand paralysis following a subcortical ischemic stroke. If detectable, this motor planning activity could be used in real time to trigger a motorized hand exoskeleton or an electrical stimulation device that opens/closes the hand. While EEG-triggered movement-assist devices could restore function, they may also promote recovery by reinfor-cing the use of remaining cortical circuits. EEGs were recorded while participants were cued to either relax or attempt to extend their fingers. Linear discriminant analysis was used to detect onset of finger extension from the EEGs in a leave-onetrial-out cross-validation process. In each testing trial, the classifier was applied in pseudo real time starting from an initial hand-relaxed phase, through movement planning, and into the initial attempted finger extension phase (finger extension phase estimated from typical time-to-movement-onset measured in the unaffected hand). The classifiers detected attempted finger-extension at a significantly higher rate during both motor planning and early attempted execution compared to rest.
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