1. Extra Credit for Participating in Experiments Go to www.tatalab.ca to sign upwww.tatalab.ca 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 upkarla.ponjavic@uleth.ca

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)

10. Head accelerates this way Cupula gets pushed Fluid goes this way

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

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

21. Two classes of thermoreceptors: warm and cold Thermoception

22. Taste (Gustation) Taste buds contain chemical receptors

23. Taste What are the various “tastes”?

24. 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 Taste