Can I Think of Something Else when Using a BCI?: Cognitive Demand of an SSVEP-based BCI

論文URL:http://dl.acm.org/citation.cfm?doid=3025453.3026037

論文アブストラクト:BCIs are presumably supposed to require the full attention of their users and to lose accuracy if they pay attention to another task. This assertion has been verified with several BCI paradigms (e.g. P300). But the cognitive demand of the promising SSVEP paradigm had never been specifically assessed yet. We measured the accuracy of an SSVEP-based BCI used by 26 participants in various conditions of mental workload. Our analysis revealed that surprisingly, for this type of BCI, little attention is actually needed from participants to reach optimal accuracy: participants were able to successfully perform a complex secondary task (N-back) without degrading the BCI accuracy. The same observation was made whether visual or auditive attention was solicited. These results indicate that SSVEP is a low-demanding paradigm in terms of cognitive resources, and are encouraging for its use in complex interaction settings.

日本語のまとめ:

脳波測定(BCI)は測定中に別のタスクを行うと精度が低下してしまうという問題がある.しかしSSVEP式の測定方法では認知リソースが少ないため,マルチタスクを行っても精度の低下が抑えられるという結果が判明.

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