An Exploration on Modeling Haptic Reaction Time of 3D Interactive Tasks within Virtual Environments.

Virtual environments (VEs) utilize haptic cues - e.g., vibrotactile and force feedbacks - to facilitate user interactions in 3D tasks. Existing studies reported maximum likelihood estimation (MLE) to integrate cues of different modalities. The MLE integration was excluded for cues of the same modality. Although proportional likelihood estimation (PLE) was able to integrate same-modality cues for the parameter of task accuracy, its applicability remains unclear to other task parameters like reaction time. This feasibility study compared thus MLE and PLE to integrate the haptic cues for reaction time. PLE was found to be applicable to model haptic reaction time.