Navigation Links
Tracking the memory trace

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 insect's 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.

In the more recent report involving the DPM neurons, the change can be seen 30 minutes after the formation of the memory, but it lasts about two hours.

"The other intriguing thing we don't understand is that this occurs only in one branch of the DPM neuron," said Davis. "Our impression now is that maybe what guides the behavior after training in the first few minutes is the antennal lobe. That is the important part that guides behavior for the small window of time after training. The DPM neurons have that role from 30 minutes to two hours."

The finding belies the commonly held precept that a memory is formed in the same way that data are stored in a computer ?always in the same place.

"It's not as if we are forming memories that are then being written to a "hard disk" area of the brain, and it's there and recalled from the same location at any time after learning," said Davis. "We now t hink that different areas of the brain have dominion over small intervals of time after training. One area might have dominion and then another." Others who participated in the research include Drs. Dinghui Yu and Anjana Srivatsan, both of BCM, and Scott Waddell and graduate student Alex Keene, of the University of Massachusetts Medical Center.
'"/>

Source:Baylor College of Medicine


Related biology news :

1. New Technique for Tracking Gene Regulators
2. Tracking sperm whales and jumbo squid
3. Rats infected as newborns grew up vulnerable to memory problems during an immune challenge
4. Structure-building cell signals also may influence learning and memory
5. Mice brains shrink during winter, impairing some learning and memory
6. Montreal researchers probe the genetic basis of memory
7. U of MN researchers reverse memory loss in mice
8. Researchers know what you were about to say; fMRI used to detect memory storage and retrieval
9. Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace
10. Learning and memory stimulated by gut hormone
11. Mechanism for memory revealed in neurons of electric fish

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/30/2017)... 30, 2017 Trends, opportunities and forecast in ... by technology (fingerprint, AFIS, iris recognition, facial recognition, hand ... by end use industry (government and law enforcement, commercial ... banking, and others), and by region ( North ... Asia Pacific , and the Rest of ...
(Date:3/24/2017)... 24, 2017 The Controller General of Immigration from ... Abdulla Algeen have received the prestigious international IAIR Award for the ... Continue Reading ... ... Controller Abdulla Algeen (small picture on the right) have received the IAIR ...
(Date:3/22/2017)... VILNIUS, Lithuania , March 21, 2017 /PRNewswire/ ... identification and object recognition technologies, today announced the ... development kit (SDK), which provides improved facial recognition ... safety cameras on a single computer. The new ... algorithms to improve accuracy, and it utilizes a ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... ... 2017 , ... Colpitts Clinical has launched the twelfth revision ... features that facilitate streamlined and compliant communication, file sharing and document storage. As ... medical advancements, they rely on efficiencies to help them address the ever-present challenges ...
(Date:9/21/2017)... CALIF. (PRWEB) , ... September 21, 2017 , ... Lajollacooks4u ... this month. The organization, a worldwide society of professional women with high achievement ... to hold its annual dinner. , Twelve members began with an olive ...
(Date:9/20/2017)... CT (PRWEB) , ... September 20, 2017 , ... Diversity ... 2nd annual multi-city Fueling the Growth pitch competition to uncover the top technology-driven, women-led ... will be an integral part of each city’s entrepreneurial events going on that week ...
(Date:9/20/2017)... ... September 20, 2017 , ... From industry leaders, sports ... after standard medicine failed. Many of these people had lost all hope. ... Free Download (pdf) , “Neil takes readers on a riveting ...
Breaking Biology Technology: