Oct 7, 2009
Dean Franklin developed the first instruments to measure blood
flow and the changes in diameter of the pulsating heart in
conscious animals. He also pioneered the use of radio waves to
measure heart and blood vessel function without wiring the body to
the instrument. Dusty Sarazan, a former student of Dean Franklin,
explains how these inventions led to the non-invasive
cardiovascular monitoring instruments we have today. You can find
the full article on Dean Franklin here
and a press release
here. (Begins at 02:22)
A program note: We misspoke when we mentioned that physiologists made an important discovery after a giraffe frightened an instrumented baboon. In fact, a leopard had frightened the baboon.
The Buzz in Physiology
(Begins at 00:52) A study on how exercise helps prevent weight regain after dieting finds that exercise reduces the drive to overeat, causes the body to burn fat before burning carbohydrates and prevents an increase in the number of fat cells during weight regain.
A study on how alcohol can disrupt circadian rhythm finds that chronic drinking blunts the biological clock's ability to synchronize daily activities to light, disrupts natural activity patterns and continues to affect the body's clock even days after the drinking ends.