Behavioral Neuroscience, Lecture on September 5th
Most common form of brain scanning is fMRI.
Measures blood flow in the brain.
Why use animal models?
See similarities between species
Brain and behavior,
Brain states produce observable behaviors.
and behaviors can alter brain states.
Goal of behavioral neuroscience is to understand this relationship.
Three primary approaches,
somatic interventions - manipulate something directly and watching what
behaviors are affected.
o administer a hormone -- strength of mating behavior.
o stimulate brain region electrically -- movement toward goal object.
o cut connections between parts of nervous system -- recognition of
o example: giving someone lots of caffeine and measure
behavioral interventions - experience affects the body (including the
o put male in presence of female – changes in hormone level.
o present a visual stimulus -- changes in electrical activity of brain.
o give training -- anatomical changes in nerve cells.
o example: put someone in front of the Internet for an extended
period of time. / have people do homework in the classes they like
and classes they do not like. / force people to exercise and see how
focus is measured. body and behavioral measures covary.
o correlation between brain size (somatic) and learning scores
o correlation between hormone levels (somatic) and strength of
mating behavior (behav