Tag Archives: memory

Fear of the Light

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fear-of-the-light**PLEASE SEE UPDATES BELOW**

It is commonly believed that distinct mini-networks of neurons, firing together, may be the means by which memories and other conceptual encoding requirements are handled in the brain. However, it is only recently that we have had the tools available to directly test the sufficiency of such a mechanism. Today, a new study in Nature from the lab of Susumu Tonegawa documents the ability to use light as a means to activate distinct subsets of neurons responsible for the encoding of fear memories.

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Lost in Translation — Chasing the Roots of Conditioned Fear Research

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I’m currently attending the Winter Conference on Neural Plasticity in lovely St. Kitts & Nevis and I’ll be tweeting when I can from #wcnp12 when the Internet access in the room decides to cooperate.

Today’s opening session at the meeting was a historical perspective on selected topics in neural plasticity. I thought I’d share an interesting piece of history about one topic that has exploded in terms of research output over the last 20 years: conditioned fear. Michael Fanselow gave the lecture on the history of fear research and focused on the era prior to the exponential growth of the literature, sticking to 1920-1980. Here’s a graph from a very recent review simply noting the number of “fear extinction” papers in the literature (one small sub-field in this topic,) just to give you a sense of how rapidly this field has grown:

Found on Google Images, not sure why it's in front of the paywall!!

I’ll do may best to channel Dr. Fanselow with the next few paragraphs:

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