A related issue is how to improve the performance and reliability of current BCIs, which are characterized by noisy and low-bit-rate outputs. A promising possibility is the use of modern HCI principles to explicitly take into account the noisy and lagged nature of the BCI control signals to adjust the dynamics of the interaction as a function of the reliability of user's control capabilities. Such a HCI approach can also include the ability to “degrade gracefully” as the inputs become increasingly noisy (Williamson, 2006).