Instruction
Question 1
Our sense of balance involves another sense besides vision and vestibular function, called proprioception. Test your balance at this site or that one. Why do you think that three senses are necessary for balance?
Question 2
Questions (Answer two.)
1. There can't be sounds without frequencies, but are there sounds without pitch?
2. As you know, one important feature of sound is its frequency. Are you able to hear the 10,000 Hz sound?
• http://www.skidmore.edu/~hfoley/Perc9.htm#ch9demo2
• http://www.youtube.com/watch?v=igGroIcga3g
• http://www.youtube.com/watch?v=bWpSePfbTxc (ineradicable error in grammar)
Now put frequency and amplitude together to find out which frequencies you are most sensitive to at this website. Try to judge the frequencies to which you are most sensitive and share the result with us. You might want to confirm your results at this site. How did you make your decision?
Question 3
Is the placebo effect confined to drugs? Can you think of an exam