Online single trial ERN detection as an interaction aid in HCI applicationsChi T. Vi, Sriram Subramanian, Online single trial ERN detection as an interaction aid in HCI applications. CHI 2011 Workshop on Brain and Body Interfaces: Designing for Meaningful Interaction. May 2011. No electronic version available.
Error-related negativity (ERN) is a form of an Event Related Potential signal which can be triggered in the brain when a user either makes a mistake or the application behaves differently from the expectation of the user. The first step to harness the benefits of ERN in HCI applications is to detect the patterns in real-time on a single trial basis. In this paper we present our initial results in detecting ERN. Using a logistic regression technique, we have achieved a 70% recognition rate of erroneous and correct single trials. We then explored several designs, e.g. using ERN to help a user in the moment of bad decision in a map navigation task. Through multiple designs and careful user testing, we aim to identify guidelines and design principles that can help HCI researchers to include ERN as an interaction aid in their applications