No abstract

Brain-Computer Interface (BCI) enables users to interact with a computer only through their brain biological signals, without the need to use muscles. BCI is an emerging research area but it is still relatively immature. However, it is important to reflect on the different aspects of the Human-Computer Interaction (HCI) area related to BCIs, considering that BCIs will be part of interactive systems in the near future. BCIs most attend not only to handicapped users, but also healthy ones, improving interaction for end-users. Virtual Reality (VR) is also an important part of interactive systems, and combined with BCI could greatly enhance user interactions, improving the user experience by using brain signals as input with immersive environments as output. This paper addresses only noninvasive BCIs, since this kind of capture is the only one to not present risk to human health. As contributions of this work we highlight the survey of interactive systems based on BCIs focusing on HCI and VR applications, and a discussion on challenges and future of this subject matter.

In recent years mobile usage has increased remarkably, attracting new adopters. Mobile applications, or mobile apps, have become essential tools for daily tasks, enhancing productivity, communication and entertainment. Nowadays, there is a great demand for updated software in order to meet customer expectations. Interaction aspects and aesthetic characteristics stand out as an important differential, which must guide the product development process. Therefore, it is necessary to elicit functional requirements based on existing products, which are available in repositories, i.e. mobile app stores. We present M4REMAIP, a method for requirements elicitation based on mobile applications under an interaction perspective, as well as results of this method's application in order to demonstrate its practical usefulness for requirements elicitation in the context of home control applications.