Memory formation follows a dynamic pattern, allowing for retrieval from different areas of the brain, depending on when an organism needs to remember, said a researcher at Baylor College of Medicine.
That is what Dr. Ron L. Davis, professor of molecular and cellular biology at BCM, theorizes, based on his most recent report on the topic that finds a memory trace in Drosophila or fruit flies is formed in a pair of neurons called the dorsal pair medial neurons, but only 30 minutes after the fact and only through the mediation of a gene called, ironically, amnesiac. (A memory trace is a chemical change in tissue that represents the formation of a memory.) The study appears in the current issue of the journal Cell.
Davis and his colleagues were one of the first to actually record a memory trace being formed. That one was first stored in the insects antennal lobe (where odors are processed). The flies are trained to associate an odor with an electric shock. The change in these neurons was immediate, but lasted only five to seven minutes.
Ross Tomlin | EurekAlert!
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