Please show me other sites on the Brain and Learning if you have them!
Thanks!
Episode 4 is The Adult Brain.
http://www.pbs.org/wnet/brain/episode4/index.html
"We must also understand that the brain affects positive emotional
responses such as laughter, excitement, happiness, and love. Scientists
have been able to pinpoint the section of the brain that causes
laughter (with no intention of finding a cure!)"