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:8/18/2015)... Research and Markets ( http://www.researchandmarkets.com/research/9dmm6l/global_biometric ) ... Biometric Authentication & Identification Market: Focus On Modality, ... report to their offering. ... is expected to grow at an estimated CAGR ... over $25 billion (approximately) by 2020 as per ...
(Date:8/12/2015)... , Aug. 12, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced that four of its ... solution, have officially been named FIDO Certified™ by ... of the certification, Synaptics, Natural ID™ fingerprint solutions ... Authentication Framework (UAF) standard and are interoperable among ...
(Date:8/6/2015)... Germany , August 6, 2015 /PRNewswire/ ... SensoMotoric Instruments (SMI) shows the world,s first ... based on Epson,s Moverio BT-200 see-through head mounted display ... new solution, unprecedented quality and efficiency is brought to ... displays. For the first time, professionals and researchers can ...
Breaking Biology News(10 mins):Global Biometric Authentication & Identification Market 2015: Focus On Modality, Motility & Application - Estimation & Forecasts to 2020 for the $25 Billion Industry 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 2Synaptics Announces FIDO Certification of Natural ID Fingerprint Solutions 3SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 2SMI Shows First Eye Tracking Upgrade for Augmented Reality Glasses 3
(Date:9/4/2015)... ... September 04, 2015 , ... ... bioprinter, the BioBot 1, at the 2015 TERMIS World Congress in Boston. The ... and biomedical engineering institutions around the world. The printer is revolutionary for its ...
(Date:9/3/2015)... Sept. 3, 2015  Guardant Health®, the leader ... highlighting the performance and clinical utility of Guardant360® ... oral and poster presentations at the International Association ... Conference on Lung Cancer. These abstracts were submitted ... California, Davis; the University of Chicago; Sarah Cannon ...
(Date:9/3/2015)... India , September 3, 2015 ... Instruments Market by System (LC (HPLC, UHPLC, Flash), GC, ... Phase Columns, Syringe Filters, Vials) - Analysis & Global ... Market is expected to reach around 9.223 Billion by ... CAGR of 5.5%. Browse 141 tables and ...
(Date:9/2/2015)... Bermuda , Sept. 2, 2015 Axovant Sciences ... the treatment of dementia, today announced upcoming presentations at three ... PM at the Baird 2015 Healthcare Conference in ... , Thursday, September 10 at 2:00 PM at the ... at the Millennium Broadway Hotel & Conference Center , ...
Breaking Biology Technology:BioBots to Debut Desktop 3D Bioprinter for Living Tissue at TERMIS Global Tissue Engineering Conference in Boston 2BioBots to Debut Desktop 3D Bioprinter for Living Tissue at TERMIS Global Tissue Engineering Conference in Boston 3BioBots to Debut Desktop 3D Bioprinter for Living Tissue at TERMIS Global Tissue Engineering Conference in Boston 4Leading Cancer Centers to Present Clinical Utility Data For Guardant360 At IASLC's 16th World Conference on Lung Cancer in Denver Sept. 6-9 2Leading Cancer Centers to Present Clinical Utility Data For Guardant360 At IASLC's 16th World Conference on Lung Cancer in Denver Sept. 6-9 3Leading Cancer Centers to Present Clinical Utility Data For Guardant360 At IASLC's 16th World Conference on Lung Cancer in Denver Sept. 6-9 4Chromatography Instruments Market Worth $ 9.223 Billion by 2020 2Chromatography Instruments Market Worth $ 9.223 Billion by 2020 3Chromatography Instruments Market Worth $ 9.223 Billion by 2020 4Axovant Sciences To Present At Upcoming Investor Conferences 2Axovant Sciences To Present At Upcoming Investor Conferences 3
Cached News: