A snippet of the article from Science Daily documenting Tsien's work:
"It's a beginning, a first glimpse of a memory," Dr. Tsien said.
"For the first time it gives us the ability to look at the brain dynamic and tell what kind of memory is formed, what are the components of the memory and how the memory is retrieved at the network level." The finding could help pinpoint at what stage memory formation is flawed and whether drugs are improving it...A computational algorithm translated the neuronal chatter into a discernable and dynamic activity pattern that provided scientists a trace or picture of what the memory looked like as it was formed and recalled.
http://www.sciencedaily.com/releases/2009/12/091215202322.htm
A snippet of the article from Science Daily documenting Tsien's work: