Key result
Single cycle analysis and phase weighting of the SSVEP response allowed standard criterion levels to be set across subjects and improved transfer rates in a four-class Brain Computer Interface system.
Single cycle analysis and phase weighting of SSVEP responses can improve transfer rates in Brain Computer Interface systems.
May enable reliable subject-independent BCI thresholds; leaves open clinical validation in neurological populations.
Single cycle analysis of the Steady State Visual Evoked Potential (SSVEP) response allows use of standard significance tests to determine a subject's gaze. This allows standard criterion levels to be set across all subjects rather than individually by empirical analysis. Furthermore once a subject's gaze has been classified it is possible to extract a notion of expected phase to a SSVEP stimulus. This expected phase value can then be used to augment classification of attention to a four class Brain Computer Interface system improving transfer rates.
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Wilson et al. (2009) studied Brain Computer Interface (BCI) users. Single cycle analysis and phase weighting was evaluated on Transfer rates in a four class Brain Computer Interface system. Single cycle analysis and phase weighting of the SSVEP response allowed standard criterion levels to be set across subjects and improved transfer rates in a four-class Brain Computer Interface system.
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