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:
TAG: Mechanism for memory revealed neurons electric fish

(Date:6/16/2015)... -- Fingerprint Cards has received an order of ... portfolio from one of its module partners in ... during the third quarter 2015. The sensors will be used ... Jörgen Lantto, CEO of FPC, comments: " This order ... from smartphone OEMs in integrating touch fingerprint sensors in   ...
(Date:6/15/2015)... According to a new market research report ... Hybrid), Technologies (Recognition, IVR, OCR, Pattern & Image Recognition) ... Natural Language Processing Market is expected to grow to ... forecast period 2015-2020. Browse 65 market ...   through 155 P ages and in-depth TOC ...
(Date:6/15/2015)... , Jun. 15, 2015 NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market, announces that its leading ... to media at Digital Experience! @ NYC June 18th. ... of the latest innovation in technology to over 300 of ... held at the Metropolitan Pavilion in New York ...
Breaking Biology News(10 mins):FPC Receives Order for Touch Fingerprint Sensors of 375 MSEK 2Natural Language Processing Market Worth $13.4 Billion by 2020 2Natural Language Processing Market Worth $13.4 Billion by 2020 3Natural Language Processing Market Worth $13.4 Billion by 2020 4Natural Language Processing Market Worth $13.4 Billion by 2020 5Wocket Smart Wallet Exhibiting at Pepcom Digital Experience! @ NYC June 18th 2Wocket Smart Wallet Exhibiting at Pepcom Digital Experience! @ NYC June 18th 3
(Date:7/1/2015)... ... ... next-generation sequencing (NGS) clinical market is poised for huge growth as it prepares to ... its new report that the market drivers of this vibrant industry include increased payor ... as part of a molecular diagnostics trend. , The global market is forecast to ...
(Date:7/1/2015)... ... , ... A newly launched business plan contest will ask startup companies from ... life sciences R&D. The Pistoia Alliance President’s Startup Challenge 2015 will see small and ... of expert mentorship from a senior industry figure drawn from the Pistoia Alliance membership. ...
(Date:6/30/2015)... R-Japan Co.,Ltd. obtained the license of cell processing facility under ... Ministry of Health, Labour and Welfare Kinki Bureau of Health ... fact that R- Japan received the license ... Medical Devices Agency (PMDA) on May 18, 2015 two months ... manufacturing service to medical institutions. As of November 25, 2014, ...
(Date:6/30/2015)... , June 30, 2015  Juniper Pharmaceuticals, ... focused on developing therapeutics that address unmet medical ... George Elston will present at the ... Wednesday, July 8, 2015Time: , 4:45 PM EDTLocation: ... (live & archive): , www.juniperpharma.com, under  ,Investor, ...
Breaking Biology Technology:NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 2NGS-Based Diagnostics, the ‘Must-Have Platform’, Sends Market Segment CAGRs Soaring According to BCC Research 3Pistoia Alliance Launches Startup Challenge 2Pistoia Alliance Launches Startup Challenge 3R-Japan Obtained Autologous Stem Cell Manufacturing License from the Ministry of Health, Labour and Welfare 2Juniper Pharmaceuticals to Present at Cantor Fitzgerald Inaugural Healthcare Conference on July 8, 2015 2
Cached News: