Navigation Links
Brain power goes green
Date:10/14/2009

Our brains, it turns out, are eco-friendly. A study published in Science and reviewed by F1000 Biology members Venkatesh Murthy and Jakob Sorensen reveals that our brains have the amazing ability to be energy efficient.

Brain cells generate and propagate nerve impulses, or action potentials, by controlling the flow of positive sodium and potassium ions in and out of the cells. Re-establishing the ion equilibrium after an action potential requires energy.

The amount of energy needed for action potentials was previously estimated using a giant nerve cell from squid. Now, researchers at the Max-Planck Institute for Brain Research in Germany show that squid cell studies overestimated the amount of energy necessary to generate an action potential by almost a factor of four, suggesting human brains have the same potential to be energy efficient.

The researchers used a novel technique to record the voltage generated by nerve cells to "show that a rather subtle separation between the timing of sodium entry and potassium exit during action potentials can determine how much energy is expended to maintain the ionic gradients," Murthy says.

Murthy goes on to say that "[these results] are important, not just for a basic understanding of brain metabolism, but also for interpreting signals detected by non-invasive brain imaging techniques." Sorensen concludes that "the amazing thing is that we didn't realize the result a long time ago!"


'/>"/>

Contact: Steve Pogonowski
press@f1000.com
Faculty of 1000: Biology and Medicine
Source:Eurekalert

Page: 1

Related biology news :

1. Invasion of the brain tumors
2. HIV is a double hit to the brain
3. AIDS interferes with stem cells in the brain
4. 60 second test could help early diagnosis of common brain diseases
5. U of MN researchers discover noninvasive diagnostic tool for brain diseases
6. U of Minnesota researchers discover noninvasive diagnostic tool for brain diseases
7. Influence of sex and handedness on brain is similar in capuchin monkeys and humans
8. Inside the brain of a crayfish
9. Specific brain protein required for nerve cell connections to form and function
10. Brains timing linked with timescales of the natural visual world
11. Adult brain can change, study confirms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/2/2017)... NEW YORK , March 2, 2017 Summary ... to better understand Perrigo and its partnering interests and activities ... ... The Partnering Deals and Alliance since 2010 report provides an ... world,s leading life sciences companies. On demand company ...
(Date:3/1/2017)... 2017  Aware, Inc. (NASDAQ: AWRE), a leading supplier ... P. Moberg has resigned, effective March 3, 2017, ... Officer and Treasurer of Aware citing a desire to ... member of the Board of Directors of Aware. ... Officer and co-President, General Counsel has been named Chief ...
(Date:2/27/2017)... , Feb. 27, 2017   Strategic Cyber Ventures ... it has led a $3.5 million investment in  Polarity ... Strategic Cyber Ventures is DC based and is led ... Hank Thomas . Ron Gula , also a ... also participated in this series A round of funding. ...
Breaking Biology News(10 mins):
(Date:3/23/2017)... , March 23, 2017  Agriculture technology company ... A financing and note conversion to commercialize its Cool ... is focused on developing products that are simultaneously profitable ... million in the last 18 months. This latest round ... Bridge Venture Partners. The company,s primary ...
(Date:3/22/2017)... , March 22, 2017  Ascendis Pharma A/S ... innovative TransCon technology to address significant unmet medical ... for the full year ended December 31, 2016. ... for our company as we broadened our pipeline ... integrated rare disease company with an initial focus ...
(Date:3/22/2017)... New York , March 22, 2017 ... is largely fragmented, states a research report by Transparency ... S.A., Pfizer Inc., Amgen Inc., and AbbVie Inc., accounted ... in 2015. The prominent players in this market are ... expand their product portfolio, which is likely to lead ...
(Date:3/22/2017)... ... 21, 2017 , ... Premier executive recruitment firm, Slone Partners, is proud to ... Scanlon Media. , Hunt Scanlon Media is one of the most respected ... source in the human capital sector. , “It is a great honor for Slone ...
Breaking Biology Technology: