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Feedback of Biological Systems

Feedback of Biological Systems. Specifically Humans Ryan Bussis Samuel Stearley. Introduction. Tracking Balance Movement: Walking/Swimming Modeling. Vestibular Sensors in Ear. These are spaces in the ear filled with a liquid that moves across hairs.

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Feedback of Biological Systems

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  1. Feedback of Biological Systems Specifically Humans Ryan Bussis Samuel Stearley

  2. Introduction Tracking Balance Movement: Walking/Swimming Modeling

  3. Vestibular Sensors in Ear • These are spaces in the ear filled with a liquid that moves across hairs. • These hairs connect to nerves and feed data to your brain.

  4. Measures Angular Acceleration • Provides feedback so that eyes can focus while the head is moving. • Similar to the model of stabilizing a Video Camera. (Chapter 5) http://thalamus.wustl.edu/course/audvest.html Semi-Circular Canal

  5. Measures Linear Acceleration • Keeps track of the movement of your body. • If your eyes disagree with what vestibular is telling you: Your head explodes. • Specific parts are called Utricle (Horizontal) and Saccule (up-down/forward-backward)

  6. Linkage to the Motor System • The importance of eye sight for balance. - Walking - Driving - Swimming

  7. People can walk in dark • People can keep stability without seeing - Other senses are used • Direction is not known

  8. Straight Lines • Sensors in the back of the eye (Rods and Cones) align a person with straight lines. (Vertical or Horizontal) • Also applies for swimming. You need to have a line to follow.

  9. Driving • If you want to drive straight you need to look far into the distance. • If you look in front or eyes closed you can’t drive straight.

  10. Balance • Eyesight is used to align vertically and tells your brain that you are stable. • Example: Try standing on one leg with your eyes closed.

  11. Modeling

  12. Modeling Continued

  13. Questions?

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