Optogenetics illuminates pathways of motivation through brain, Stanford study shows
Sunday, November 18, 2012 - 17:00
in Biology & Nature
Whether you are an apple tree or an antelope, survival depends on using your energy efficiently. In a difficult or dangerous situation, the key question is whether exerting effort — sending out roots in search of nutrients in a drought or running at top speed from a predator — will be worth the energy.