HOME >> BIOLOGY >> NEWS
Mechanism for memory revealed in neurons of electric fish

Researchers from The University of Texas at Austin studying electric fish have gained new insight into how memory is stored at the level of neurons.

Their finding, published in the Feb. 16 issue of Neuron, could help researchers better understand memory formation and neural disorders like epilepsy in humans.

Dr. Harold Zakon, Dr. Jrg Oestreich and colleagues show that when electric fish zap each other in dark waters, their neurons store a memory of the sizzling communiqu by turning on special cell membrane channels.

The channels give the fish neurons the ability to retain a memory long after its original stimulus is gone.

"There is short-term stimulation that results in long-term changes in excitability," says Zakon, professor of neurobiology. "Essentially, it is memory."

The electric fish studied by Zakon and Oestreich discharge electrical signals to survey their environment and communicate with each other.

"Every time they discharge, it's kind of like they are opening their eyes and closing them," says Zakon. "Each pulse of electricity is a snapshot of the environment. These guys are swimming around and discharging at a very regular frequency. They're digitizing their environment."

But a problem occurs when the fish are close to each other. They can jam each other's electrical signals. In response, one of the fish will jump to a higher frequency to avoid the jamming signal, emitting more electrical pulses per second than its neighbor.

Oestreich and Zakon found that once the jamming avoidance has started, the fish's neurons continue to discharge at a higher frequency, even after its neighbor fish may have swum away.

The researchers discovered that the neurons' memory was not caused by increased flow of glutamate to their synapses. Glutamate is the major excitatory neurotransmitter in the nervous system and is involved in the processes of learning and memory. They blocked glutamate and foun
'"/>

Contact: Harold Zakon
h.zakon@mail.utexas.edu
512-471-0194
University of Texas at Austin
17-Feb-2006


Page: 1 2

Related biology news :

1. Mechanism of microRNAs deciphered
2. Mechanisms involved with tumor relapse identified
3. Mechanism to organize nervous system conserved in evolution
4. Mechanism for Epstein-Barr virus proteins role in blood cancers discovered
5. Mechanism of new sudden-death arrhythmia detailed
6. Mechanism regulating tooth shape formulation found
7. Mechanism proposed for link between RU-486 and fatal infections
8. Mechanism for the captation of nutrients in plants- unknown to date
9. Mechanism discovered for muscle wasting seen in diabetes, AIDS and other diseases
10. Research study describes the role part of the brain plays in memory
11. How memory T cells curb the spread of viruses throughout the body

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


(Date:4/11/2017)... Fla. , April 11, 2017 ... and secure authentication solutions, today announced that it ... Intelligence Advanced Research Projects Activity (IARPA) to develop ... Thor program. "Innovation has been a ... IARPA,s Thor program will allow us to innovate ...
(Date:4/5/2017)... , April 5, 2017  The Allen Institute for ... Cell Explorer: a one-of-a-kind portal and dynamic digital window ... imaging data, the first application of deep learning to ... stem cell lines and a growing suite of powerful ... for these and future publicly available resources created and ...
(Date:3/30/2017)... 2017  On April 6-7, 2017, Sequencing.com will host ... hackathon at Microsoft,s headquarters in Redmond, ... on developing health and wellness apps that provide a ... Genome is the first hackathon for personal genomics ... companies in the genomics, tech and health industries are ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... MA (PRWEB) , ... September 21, 2017 , ... ... proprietary clinical client portal. Each relaunch of the portal includes new features that ... and medical device companies seek to remain at the forefront of medical advancements, ...
(Date:9/21/2017)... SAN DIEGO, CALIF. (PRWEB) , ... September 21, 2017 , ... ... kitchen earlier this month. The organization, a worldwide society of professional women with ... a venue to hold its annual dinner. , Twelve members began with ...
(Date:9/20/2017)... ... 20, 2017 , ... Diversity focused business accelerator, The Refinery , announced ... to uncover the top technology-driven, women-led startups in Boston, MA, New Haven/Hamden, CT, and ... entrepreneurial events going on that week – in Boston, it will be part of ...
(Date:9/20/2017)... (PRWEB) , ... September 20, 2017 , ... From industry ... therapy succeeded after standard medicine failed. Many of these people had lost all hope. ... Regression Free Download (pdf) , “Neil takes readers on ...
Breaking Biology Technology:
Cached News: