I'm Mar Gonzalez-Franco. I'm a researcher at Microsoft Research in the US. I work with virtual reality. I have been working with virtual reality for the last, I think, six, seven years. I did my PhD with Professor Mel Slater, who was one of the first people to introduce the concept of presence in virtual reality, this idea that you feel you're somewhere else and the place illusion and the things that are happening not real, the plausibility illusion. So my interest in virtual reality is to understand why we feel it's so real, why the things that are happening are generating realistic behaviors, and why when we are inside a virtual body that moves as we move, we feel it as our body, a substitution of our body. I found several experiments. One of my first experiments was trying to figure out how the brain really perceives these virtual realities. If we think about our body, we are multisensorial. We retrieve information from our sensors, like if we were a robot, and different timings with different resolutions and then we put them together. Interestingly, some sensors are dominant, for example, the vision. All virtual reality works very much around the idea that the vision is dominant. We are visual animals, and provided that the vision say something, if another sensory input also agrees, then you believe it's real. In this case, it's the sensory motor contingencies that are generating these very strong illusion. The fact that I move my head and the virtual world, it's rendered correctly. So you need head tracking. That's basic for any virtual reality experience. The first experiments that I did were kind of trying to understand how deep inside are we structuring this sensory perceptions. So you would have your virtual hand and your real hand collocated in a virtual environment, and I would basically attack this hand with a knife, and we would measure the reaction in the motor cortex. And the reaction was people were trying to move their hand, and the reaction happened before they knew the urge of moving their hand. We were using the same techniques as Benjamin Libet, with the lateralized readiness potential, which is known to be triggered before the awareness of the action. And so it means that these sensory inputs are perceived very internally on a very subconscious way. So our sensors are providing information in real time, and our brain is interpreting it as if it were real, despite we know it's not real on a higher level. So that was one of my first experiments. I continue very much working on multisensory integration for a while, exploring the agency of these virtual bodies. You can control it. What happens if you lose control of that virtual body? It's still your body, but you cannot control it. So the kind of things that you can do in virtual reality are very different from any other technology because you can simulate scenarios that would only happen in a third term pathologies, like for example the anarchic hand illusion, in which you can move the hand in one way, but actually, your hand is autonomous sort of. This happens to very weirdly. It doesn't happen to healthy people, but we can simulate something like this in virtual reality. And we can think of many ways that virtual reality can alter perception or retrain perception using multisensory integration. That's kind of the area I'm more interested in.