Below are some interesting research papers I came across this week: -
Monitor pilgrims: prayer activity recognition using wearable sensors
Using physiological data to classify different prayer activities (individual versus group, silent versus loud).
Effectiveness of emWave Biofeedback in Improving Heart Rate Variability Reactivity to and Recovery from Stress
Evaluation of a commercial biofeedback device for use in stress management.
The Theater 2013 is an interactive horror experience based on a horror short story. If you’ve not played the game yet I recommend you download it and try it out. The game doesn’t require installation and only takes 5 minutes to play; then join me after the jump and check out my play through with a heart monitor.
Before I went to Southport’s Pleasureland I went to Blackpool Pleasure Beach (see earlier post). Unfortunately the sensor I was using was dislodged and the feature I was interested in, namely heart rate, was lost. While Blackpool ended up becoming a trial run for the next deployment I did manage to capture some fun breathing and g-force data.
Over at PhysiologicalComputing.net me and Steve announced our upcoming book Advances in Physiological Computing: an edited collection of the latest research in the field. The book will be released in April by Springer. You can check out the book webpage at Springer here and our book webpage here.
Recently I’ve been looking at different ways of visualising physiological data, and have created a Poincare plot of a funfair ride at Southport PleasureLand I sampled last year. This form of visualisation plots current and successive heartbeats as x, y coordinates, so if a subject’s heartbeat was successively 70, 80 and 75 beats per minute (bpm) we would plot (70,80) and (80, 75) on an X-Y graph. In the instance below I’m plotting heartbeat activity as inter-beat interval which is the time between beats rather than the beats per minute. I’m particularly fond of Poincare plots as its easy to grasp a subject’s heart rate variability from casual inspection. At rest a subject’s heart rate variability should be high, and so individual beats should be spread out over the graph in somewhat of a noisily fashion. When stress is applied heart rate variability decreases and beats cluster.
Last weekend I was at Oggcamp demoing a mobile GSR sensor using a mini-horror game I quickly whipped up for the event. The game uses a similar mechanic to Dark Escape 4D which I played a couple of months back. Dark Escape is a 2-player light-gun game with competitive biofeedback elements. During play there are several predetermined events which try to shock players into responding physiologically, and the player who responds the least is judged the winner. Its an interesting idea which lends itself well to an arcade game.
I’m off to Oggcamp tomorrow to demo a mobile GSR sensor. The device was originally commissioned by FACT (and built by Madlab) for an art exhibit I was involved in earlier in the year, however owing to time constraints we replaced the sensor for an off-the-shelf heart rate monitor. As the technical consultant involved in this venture the sensor has a couple of features I like in all my devices, such as being Bluetooth (easy to connect to) and a step counter (to manage data loss). I’m surprised how how many wireless sensors don’t provide a means to manage data loss, they just seem to assume their operating as a wired device which is the wrong assumption to make as research depending on time-locked signals becomes impossible. Continue reading
A full break down of the NESTA event can be found here. Videos over the page.
I’m a panel speaker at the upcoming NESTA Hot topic event on “Hack Yourself Measuring: Wellbeing” in London on May 3rd. If your interested in talking about the Body Blogger project or Physiological Computing in general while I’m around drop me an e-mail.
Click here for event details.
Trying to find free time to write something is always somewhat of an uphill challenge. In the meantime here a few links about my recent meanderings, enjoy!
- Interview in ACM XRDS Crossroads on EEG setups.
- Podcast by LJMU OpenLabs on Physiological Computing (for the transcript click here).
- Video presentation of my Quantified Self Europe talk - Lessons from a year of heart rate data.
- Photo series from BodyLab a business innovation event ran in-conjunction with LJMU Openlabs.