A novel BCI based on 3D stereo stimuli and its application for clinical object recognition assessment.
IEEE Global Conference on Signal and Information Processing(2017)
摘要
Currently, the clinical diagnosis of patients with disorders of consciousness (DOC) is based on behavioral assessments, which rely on the patients' behavioral responses to external stimulation. However, high rates of clinical misdiagnosis occurred, because many patients cannot provide efficient physical movements during the evaluation. Brain-computer interfaces (BCIs) provide an alternative approach to assist clinical assessments in patients with DOC. This study proposed a three-dimensional (3D) BCI based on stereo stimuli to assist the clinical object recognition for patients with DOC. Subjects were instructed to selectively focus on the target object cued by instruction. Four healthy subjects participated in two experiment sessions corresponding to the two-dimensional (2D) and 3D modes respectively. The results indicated that the 3D BCI system outperformed the 2D BCI system. This 3D BCI system was then applied to assess the object recognition of a patient in the minimally conscious state (MCS). The patient cannot recognize objects in the JFK CRS-R assessment before the experiment, but got a score of 75% in the BCI experiment. The result demonstrated his residual awareness and object recognition ability.
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关键词
Brain-computer interface (BCI),threedimensional (3D),disorders of consciousness (DOC),object recognition,JFK CRS-R
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