HOME >> BIOLOGY >> NEWS
Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace

An international team of scientists for the first time has detected a memory trace in a living animal after it has encountered a single, new stimulus. The research, done with honeybees sensing new odors, allows neuroscientists to peer within the living brain and explore short-term memory as never before, according to scientist Roberto Fernndez Galn, a leading author on the report who is currently a postdoctoral research associate at Carnegie Mellon University.

Capturing these memory traces could ultimately provide a completely new way to understand how short-term memory works, stated Galn. The findings are scheduled for January publication in Neural Computation.

"Our findings show that an odor produces a memory trace of synchronized neural activity that lasts several minutes after a bee initially senses it," said Galn. "This is the first time anyone has revealed a short-term, stimulus-specific neural pulse within the living brain that occurs after exposure to a previously unknown stimulus."

"Future investigations along the lines of our study may reveal previously overlooked memory traces in many other neural systems," said C. Giovanni Galizia, Galn's primary collaborator, who is now a professor at Konstanz Universitt in Konstanz, Germany.

Galn performed the work as part of his dissertation research while in the research group of Andreas Herz at the Humboldt University in Berlin, Germany.

The report supports Hebb's theory of learning, a 55-year-old proposition that "neurons that fire together wire together," thereby strengthening their connections. According to the theory, a stimulus activates some neurons while inhibiting others. Once this stimulus is removed, traces of that excitation/inhibition pattern so-called Hebbian reverberations should remain.

"We are the first to observe this phenomenon at the network level. We are also the first to detect a distinct signature, not only of a sensory short-term memory, but
'"/>

Contact: Lauren Ward
wardle@andrew.cmu.edu
412-268-7761
Carnegie Mellon University
14-Nov-2005


Page: 1 2 3

Related biology news :

1. Carnegie Mellons Peter Adams receives EPA research grant
2. Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily
3. Carnegie Mellons David Sholl identifies new materials
4. Carnegie Mellon University scientists identify genes activated during learning and memory
5. Carnegie Mellon University research shows how sensory-deprived brain compensates
6. Carnegie Mellon researchers urge regulators to rethink strategies for soot emission
7. Carnegie Mellon researcher proposes development of artificial cells to fight disease
8. Carnegie Mellon engineers devise new process to improve energy efficiency of ethanol production
9. DNA gets new twist: Carnegie Mellon scientists develop unique DNA nanotags
10. Carnegie Mellons Granger Morgan pens op-ed
11. Carnegie Mellon scientist plays key role in unveiling sea urchin genome

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


(Date:2/21/2017)... N.Y. and PORTLAND, Ore. ... ) and the Avamere Family of Companies (Avamere Health ... today announced a six-month research study that will apply ... improve eldercare at senior living and health centers. By ... Avamere hopes to gain insights into physical and environmental ...
(Date:2/13/2017)... 13, 2017  RSA Conference -- RSA, a Dell ... designed to enhance fraud detection and investigation across ... RSA Fraud & Risk Intelligence Suite. The new ... additional insights from internal and external sources as ... their customers from targeted cybercrime attacks. ...
(Date:2/8/2017)... YORK , Feb. 8, 2017 About ... individual,s voice to match it against a stored ... such as pitch, cadence, and tone are compared ... require minimal hardware installation, as most PCs already ... for different transactions. Voice recognition biometrics are most ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... ... 2017 , ... Chef Jodi Abel has returned from her three-week tour ... she gained a number of delicious recipes and new techniques to share with her ... Western Cape province. It is internationally renowned for its incredible wine farms, beautiful ...
(Date:2/24/2017)... 24, 2017  Aethlon Medical, Inc. (Nasdaq: ... its Chairman and CEO, Jim Joyce . ... Conference last Saturday, Bill Gates warned world ... people than nuclear weapons. Mr. Gates expressed his concern, ... agencies, that scientific terrorists have access to the necessary ...
(Date:2/24/2017)... , Feb. 24, 2017  Driven by ... biotechnology are now the fastest growing categories, finds ... Specialty Actives in Personal Care: Multi-regional Market Analysis ... and management consulting firm Kline. "Biotechnology ... that make them more effective for skin and ...
(Date:2/24/2017)... ... , ... FireflySci, Inc is an explosive small business that continues to grow ... bringing their powerful cuvette and spectrophotometer calibration to the spectroscopy world. ... on as they add yet another mark on the global map. , With distributors ...
Breaking Biology Technology:
Cached News: