We are currently kicking off some cooperation project for the evaluation of bio-sensor feedback for more focused work. I think there are quite some interesting technologies on the horizon in the area of sensors, bio-feedback, and learning and perofrmance support.
When visiting Stanford University I had some talks with Neema Moraveji (http://moraveji.org/) director of the Calming Technology Lab. They do interesting work on breath control, user feedback, and using the state of being calm for more productive and efficient work. I remember the idea of "if you are working with a computer for your body it’s like being attacked all the time".
An interesting aspect is how to design these kind of tools so that the distraction from the main activities is not high. Split attention effects for monitoring your calm status on the one hand and being productive on the other hand. One idea would probably be that by monitoring your state for some time reactivates senses that we had before and that we have just unlearned by every day stress and schooling.
In one of the upcoming experiment we will probably look how we can use the monitoring of breath, skin resistance, and/or heartbeat while answering multiple-choice questions.
On ths image see my colleague being hooked up to a sensor controlling a bio-feedback game.