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
'"/>

Source:Baylor College of Medicine


Page: 1 2

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:
TAG: Tracking the memory trace

(Date:4/24/2014)... shows that cells are more resilient in taking care ... missing critical components, cells can adapt and make copies ... a study published in this week,s Cell Reports ... showed that cells can grow normally without a crucial ... information is stored in DNA, which has to be ...
(Date:4/24/2014)... America (ESA) is very pleased to announce that it ... Science from the University of Wisconsin. , The ... an international, open-access, peer-reviewed journal that publishes papers on ... arthropods -- from the molecular to the ecological -- ... is freely available to individuals and institutions, and it ...
(Date:4/24/2014)... could be improved with new insights into the make-up ... studying the Amazon Basin have revealed unprecedented detail of ... region by comparing satellite maps with hundreds of field ... assess more accurately the amount of carbon each tree ... offset schemes, in which trees are given a cash ...
Breaking Biology News(10 mins):Cell resiliency surprises scientists 2ESA to publish the Journal of Insect Science 2Amazon rainforest survey could improve carbon offset schemes 2
... September 19, 2011 Dr. Martin Fregene, Director of ... Center has been tasked with leading the implementation of ... the Honourable Minister for Agriculture and Natural Resources. ... remain a co-Principal Investigator of BC Plus sharing that ...
... to producing the developmental differences displayed by social insects ... organismal function, a new study has found. ... different ways by varying the genes they express, ultimately ... permits organisms to operate successfully in their environments. A ...
... Cystic fibrosis (CF), a chronic disease that clogs the ... by a genetic defect in a chloride channel called ... not fully understand how or why this defect occurs, ... Children (SickKids) in Toronto, Ontario, Canada has found a ...
Cached Biology News:Danforth Center scientist recruited to spearhead cassava green revolution for Nigeria 2Danforth Center scientist recruited to spearhead cassava green revolution for Nigeria 3Fast-evolving genes control developmental differences in social insects 2Fast-evolving genes control developmental differences in social insects 3Unraveling a new regulator of cystic fibrosis 2
(Date:1/14/2014)... and BETHESDA, Md. , ... joining together with two institutes from the National Institutes ... tools for bringing safer, more effective treatments to patients ... National Center for Advancing Translational Sciences (NCATS) and the ...
(Date:1/14/2014)...  RXi Pharmaceuticals Corporation (OTCQX: RXII), a biotechnology company ... addressing major unmet medical needs using RNA-targeted technologies, ... Allowance from the United States Patent and Trademark ... for the treatment of fibrosis. The patent covers ...
(Date:1/14/2014)... Bellingham, Washington, USA, and Cardiff, UK (PRWEB) January 13, ... and photonics technology development leader with more than 20 ... international society for optics and photonics . Hainsey will ... “We are delighted to have Dr. Hainsey join SPIE ...
(Date:1/14/2014)... 2014 Independent publisher Bitingduck Press, with ... Canada, has big ideas for 2014 in production and ... are to produce high-quality, low-cost, DRM-free ebooks and to ... , The first major development will be bookstore ...
Breaking Biology Technology:Organovo Announces Collaboration with National Institutes of Health 2Organovo Announces Collaboration with National Institutes of Health 3RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Photonics R&D Leader Bob Hainsey Joins SPIE Technical Staff 2Bitingduck Press Looks Forward to 2014 With Multimedia E-books 2
... July 9 ATS Medical, Inc.,(Nasdaq: ATSI ... and services, today announced it has obtained new ... of the ATS Open,Pivot(R) Mechanical Heart Valve., ... Open Pivot valve was implanted in Lausanne, Switzerland,on ...
... Wash., July 9 CellCyte Genetics,Corporation (CellCyte) (OTC ... to provide strategic investment and financial advice and,services. ... its two,core platform technologies and will work with ... development and commercialization of,CellCyte,s cell expander and stem ...
... -- WuXi PharmaTech (NYSE:,WX), a leading pharmaceutical, biotechnology ... operations in China and the United,States, today proudly ... General Manager of WuXi AppTec,s Atlanta Operations, one ... Inc., has been invited,to join the Association for ...
Cached Biology Technology:ATS Medical Confirms Excellent Durability of the ATS Open Pivot Mechanical Heart Valve 2CellCyte Genetics Retains InCap Group to Advise on Business Strategy and Financing 2CellCyte Genetics Retains InCap Group to Advise on Business Strategy and Financing 3CellCyte Genetics Retains InCap Group to Advise on Business Strategy and Financing 4WuXi AppTec VP and GM Invited to Join the AAMI Standards Board 2WuXi AppTec VP and GM Invited to Join the AAMI Standards Board 3
... kit is for fine-tuning the bombardment conditions ... is recommended when you are first using ... includes 0.25 g each of 0.6 micrometer, ... microcarriers, 100 each of 9 rupture disks, ...
... Arrays can be used to test the ... and sera that are commonly used as ... contains spots for 21 different protein preparations ... antibody crossreactivity and species specificity, QC of ...
... Sciences can provide custom microplate coating using advanced automated high ... of plate formats. We can also accommodate virtually any lot ... 0.5-320 L):, , 8 ... well microplate, 384 well microplate, ...
...
Biology Products: