A mobile biofeedback self-experiment: stress and eating - Georgios Papastefanou

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A mobile biofeedback self-experiment: stress and eating - Georgios Papastefanou

  1. 1. Yorgos Papastefanou Ludwigshafen/Germany <ul><li>One week observation of my sympathetic arousal </li></ul><ul><li>and my eating behavior </li></ul>Presentation at the Quantified Self Europe Conference Amsterdam, 26.11-27.11.2011
  2. 2. Yorgos Papastefanou Ludwigshafen/Germany <ul><li>What governs my eating behavior? </li></ul><ul><li>What is the relationship between my emotional reactions and my eating behavior? </li></ul><ul><li>I know from literature, that stress influences eating behavior. Stress physiological mechanisms lead to desire for comfortable food (fat, sweet) </li></ul><ul><li>I am doing my personal program for losing weight (eating less and mainly non-cooked vegs and fruits, 1 hour/day crosstrainer) </li></ul>
  3. 3. How did I do it? sensor wristband push button keypad smartphone camera <ul><li>Skin conductivity </li></ul><ul><li>Skin temperature </li></ul><ul><li>Opto-electric sensor </li></ul><ul><li>tri-axial acceleration </li></ul><ul><li>Ambient temperature </li></ul><ul><li>12 buttons keypad </li></ul><ul><li>50 Hz </li></ul>
  4. 4. What I ate/drank Wednesday 17.11.2011 Friday 18.11.2011 Saturday 19.11.2011 Sunday 20.11.2011 Monday 21.11.2011
  5. 5. What did I learn? retrospective introspection <ul><li>In the beginning it bothered me. It precluded doing homework. After one day I got used to the wristband (but did not more homework). </li></ul><ul><li>It was kind of satisfying to mark my hungry feelings. </li></ul><ul><li>I liked to measure myself (esp. pushing the hunger marker). I missed it after stopping. This experience pointed me to social psychology of objective self-awareness. </li></ul>
  6. 6. What did I learn? Quantitative analysis
  7. 7. That’s it for now. <ul><li>More information: </li></ul><ul><li>www.bodymonitor.de </li></ul><ul><li>www.gesis.org </li></ul>

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