image: An adult rat displays more confident exploratory behavior in the open arm of the elevated plus maze following one-week exposure to short-day photoperiod. Light exposure affects dopamine expression in the hypothalamus-controlling stress response. This image relates to a paper that appeared in the April 26, 2013, issue of Science, published by AAAS. The paper, by Davide Dulcis at University of California, San Diego in La Jolla, Calif., and colleagues was titled, "Neurotransmitter Switching in the Adult Brain Regulates Behavior." view more
Credit: [Image courtesy of Davide Dulcis and Pouya Jamshidi]