I am a second year PhD student at the Interact-lab from the Department of Informatics of the University of Sussex. My research work is focused on the field of Human-Computer Interaction and the Sense of Agency with supervision from Prof Sriram Subramanian. Before joining the Interact-lab, I received my MSc in Electronics at the National Institute of Technology of Mexico.
I am interested in exploring how the experience of agency can be influenced by HCI paradigms such as touch-less systems, mid-air interfaces and Virtual Reality (VR), and how this experience can be quantitatively measured in novel application scenarios.
- Department of Engineering and Informatics
- University of Sussex
- Brighton, UK
The Sense of Agency (SoA) refers to our capability to control our own actions and influence the world around us. Recent research in HCI has been exploring SoA to provide users an instinctive sense of “I did that” as opposed to “the system did that”. However, current agency measurements are limited. The Intentional Binding (IB) paradigm provides an implicit measure of the SoA. However, it is constrained by requiring high visual attention to a “Libet clock” onscreen. In this paper, we extend the timing stimulus through auditory and tactile cues. Our results demonstrate that audio timing through voice commands and haptic timing through tactile cues on the hand are alternative techniques to measure the SoA using the IB paradigm. They both address limitations of the traditional method (e.g., lack of engagement and visual demand). We discuss how our results can be applied to measure SoA in tasks involving different interactive scenarios common in HCI.
Touchless interfaces allow users to view, control and manipulate digital content without physically touching an interface. They are being explored in a wide range of application scenarios from medical surgery to car dashboard controllers. One aspect of touchless interaction that has not been explored to date is the Sense of Agency (SoA). The SoA refers to the subjective experience of control over voluntary actions in the external world. In this research, we investigated the SoA in touchless systems using the intentional binding paradigm. We first compare touchless systems with physical interactions and then augmented different types of haptic feedback to explore how different outcome modalities influence intentional binding. From our experiments, we demonstrated that an intentional binding effect is observed in both physical and touchless interactions with no statistical difference. Additionally, we found that haptic and auditory feedback help to increase SoA compared with visual feedback in touchless interfaces.
Patricia I. Cornelio Martinez; Silvana De Pirro; Chi Thanh Vi; Subramanian Sriram In: ACM CHI Conference on Human Factors in Computing Systems (CHI 2017) ,May 6-11, 2017, Denver, CO, USA.
“Sense of Agency in mid-air Gesture & Haptic Interfaces”
Patricia I. Cornelio Martinez (2016). Position Paper at CHI’16 Workshop on Mid-Air Haptics and Displays: Systems for Un-instrumented Mid-air Interactions, San Jose, CA, USA.