Investigating gaze-controlled input in a cognitive selection test

Abstract

In the field of aviation, there is a growing interest in developing more natural forms of interaction between operators and systems to enhance safety and efficiency. These efforts also include eye gaze as an input channel for human-machine interaction. The present study investigates the application of gaze-controlled input in a cognitive selection test called Eye Movement Conflict Detection Test. The test enables eye movements to be studied as an indicator for psychological test performance and uses eye gaze as an input modality. Participants have to detect potential conflicts between aircraft and mark them using gaze input. In order to differentiate between eye movements related to the conflict detection task and fixations as commands (Midas touch problem), conflicts are first selected (pre-activated) and then marked (activated). Pre-activation is indicated by a color change from the border to the middle within the respective field. Unintended pre-activation can be interrupted by a saccade to another location. Different dwell times have been tested for pre-activation and activation in order to find an appropriate configuration for the participants. First results from pilot and air traffic controller applicants will be presented. The potential contribution of eye movements in the selection of aviation staff will be discussed.