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Extra Credit for Participating in Experiments

Extra Credit for Participating in Experiments. Go to www.tatalab.ca to sign up We are recruiting for a variety of experiments including basic perception and ADHD. ADHD Research Project.

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Extra Credit for Participating in Experiments

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  1. Extra Credit for Participating in Experiments Go to www.tatalab.ca to sign up We are recruiting for a variety of experiments including basic perception and ADHD

  2. ADHD Research Project We are specifically recruiting individuals who have been diagnosed with ADHD and are currently taking medication Contact Karla at karla.ponjavic@uleth.ca for more information or to sign up

  3. Test Wednesday and Thursday this week! • Matching • Multiple Choice • Select the one best answer

  4. Test Wednesday and Thursday this week! • True/False and Yes/No: • be sure to select true or false (or yes or no) for each answer. • Note that “yes” doesn’t mean “true”, it just means “yes”.

  5. A quick peek at all the other sensory systems we don’t have time to consider Touch, Taste, Smell, Proprioception, Thermoception and Balance

  6. How do we Stay Balanced? The Vestibular System

  7. Vestibular System (Balance)

  8. Vestibular System (Balance)

  9. Vestibular System (Balance)

  10. Vestibular System (Balance) Head accelerates this way Fluid goes this way Cupula gets pushed

  11. Vestibular System (Balance) Fluid goes this way Head accelerates this way Cupula gets pushed

  12. Vestibular System (Balance) • movement of the cupula is detected by hair cells • hair cells in the vestibular system are more sensitive than hair cells on the basilar membrane!

  13. Vestibular, Visual, and Proprioceptive Systems Work Together • Try standing on one foot with your eyes closed!

  14. Fun Facts about The Vestibular System • Seasickness arises when the vestibular system and the visual system send conflicting information

  15. Fun Facts about The Vestibular System • Seasickness arises when the vestibular system and the visual system send conflicting information • People can be knocked down by moving walls!

  16. Fun Facts about The Vestibular System • Seasickness arises when the vestibular system and the visual system send conflicting information • People can be knocked down by moving walls! • Alcohol causes the spins by (among other things) changing the density of the fluid in the semicircular canals

  17. Sensory Systems: • Touch, temperature, taste, smell

  18. There are a variety of touch receptors

  19. Touch receptors send signals to the somatosensory cortex via long axons in the spinal cord • Signals are sent to the opposite (contralateral) side of the brain

  20. The Homunculus • Wilder Penfield - Montreal Neurological Institue - 1940’s • Found somatotopic map by stimulating brain during surgery

  21. Thermoception • Two classes of thermoreceptors: warm and cold

  22. Taste (Gustation) Taste buds contain chemical receptors

  23. Taste What are the various “tastes”?

  24. Taste • Multi-dimensional scaling reveals several “varieties” of tastes: • sweet • salt • bitter • sour • umami (MSG) - possibly a protein receptor • there may also be a lipid (fat) receptor

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