Thursday, March 15, 2012

Eric Kandel's Visions

3/15/12.

"...In the 1960s, Kandel found clinical psychiatry, his initial calling, to be insufficiently empirical and turned his back on it. In what he later called "the most difficult career decision of my life," he turned down the chairmanship of the Harvard Medical School psychiatry department for the pleasures of working with the sea snail Aplysia, a move that even some of his fellow neuroscientists found alarming, given their focus on the vertebrate brain. His key findings on the snail, for which he shared the 2000 Nobel Prize in Physiology or Medicine, showed that learning and memory change not the neuron's basic structure but rather the nature, strength, and number of its synaptic connections. Further, through focus on the molecular biology involved in a learned reflex like Aplysia's gill retraction, Kandel demonstrated that experience alters nerve cells' synapses by changing their pattern of gene expression. In other words, learning doesn't change what neurons are, but rather what they do..."

http://chronicle.com/article/Eric-Kandels-Visions/131095/

No comments: