Vigilance or sustained attention is an important aspect for people who engaged in long time attention demanding tasks such as monotonous monitoring and driving. Vigilance detection has been an important topic in the field of brain-computer interface (BCI) research. However. the study is limited due to the low SNR (Signal-Noise Ratio) nature of EEG. https://lockdownsecuritycanada.shop/product-category/spdif-adapter/