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- W2563423322 abstract "Transcranial Doppler ultrasound (TCD) is an imaging technique used to assess cerebral blood flow velocities (CBFV) and can be used to develop a brain computer interface (BCI). Generally in right-handed individuals, verbal cognitive tasks elicit a greater increase in CBFV in the left hemisphere in comparison to the right while spatial tasks result in greater blood flow to the right hemisphere. Previous TCD-BCI systems have used verbal and spatial tasks as control signals; however, the spatial task required a visual cue, which is not feasible for those with visual impairments and restricts the BCI to a system-paced paradigm. Therefore, new right-side lateralized tasks that do not require visual cues were investigated and evaluated as control signals in an online three-class TCD-BCI system. An average online accuracy of 62.4±10.8% (n=10) and information transfer rate of 1.08±0.69 bits/min was achieved. These results demonstrate the feasibility of a user-paced, vision-free, online TCD-BCI system.%%%%M.H.Sc." @default.
- W2563423322 created "2017-01-06" @default.
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- W2563423322 date "2015-11-01" @default.
- W2563423322 modified "2023-09-27" @default.
- W2563423322 title "Online Three-Class Transcranial Doppler Ultrasound-Based Brain Computer Interface" @default.
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