ABSTRACT
Along with the tremendous increase of studies related to usability in the field of human–computer interaction (HCI), researchers in brain–computer interfaces (BCI) agree that the usability is also an indispensable quality of BCI systems. From this perspective, several researchers are trying to conduct usability evaluation of BCI systems. However, many previous studies have been only focused on the performance measurement such as accuracy and information transfer rate. Moreover, among most of them, there is no well-structured usability framework that is widely used for BCI. Thus, a simple and useful framework for measuring BCI usability for researchers to conduct usability evaluation is necessary. This chapter reviews the state of the art of BCI related to usability evaluation. We conducted a systematic literature review in accord with PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analyses). A total of 279 articles from 2000 to January 2016 were obtained and reviewed. As a result, we proposed the usability framework for BCI in the perspective of User, Task, Environment, Technology, Method, and Measurement characteristics. Moreover, we provided recommendations for future usability studies of BCI that can motivate researchers and practitioners in the perspectives of human factors and ergonomics/HCI.
