Navigation Links
Brain power goes green

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
Faculty of 1000: Biology and Medicine

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:
(Date:11/9/2015)... , Nov. 09, 2015 ... the addition of the "Global Law ... their offering. --> ) ... "Global Law Enforcement Biometrics Market 2015-2019" ... Research and Markets ( ) has ...
(Date:11/4/2015)... 2015 --> ... by Transparency Market Research "Home Security Solutions Market - Global ... - 2022", the global home security solutions market is expected to ... The market is estimated to expand at a CAGR ... 2022. Rising security needs among customers at homes, the ...
(Date:10/29/2015)... , Oct. 29, 2015   MedNet Solutions ... the entire spectrum of clinical research, is pleased to ... High Tech Association (MHTA) as one of only three ... the "Software – Small and Growing" category. The Tekne Awards ... who have shown superior technology innovation and leadership. ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... Halozyme Therapeutics, Inc. (NASDAQ: HALO ) will be presenting at ... on Wednesday, December 2 at 9:30 a.m. ET/6:30 a.m. PT ... provide a corporate overview. th Annual Oppenheimer Healthcare ... ET/10:00 a.m. PT . Jim Mazzola , vice president ... --> th Annual Oppenheimer Healthcare Conference in ...
(Date:11/24/2015)... 2015  Clintrax Global, Inc., a worldwide provider of clinical research ... announced that the company has set a new quarterly earnings record ... quarter growth posted for Q3 of 2014 to Q3 of 2015. ... Mexico , with the establishment of an Asia-Pacific ... United Kingdom and Mexico ...
(Date:11/24/2015)... --> --> ... by Transparency Market Research, the global non-invasive prenatal testing ... 17.5% during the period between 2014 and 2022. The ... Analysis, Size, Volume, Share, Growth, Trends and Forecast 2014 ... to reach a valuation of US$2.38 bn by 2022. ...
(Date:11/24/2015)... , ... November 24, 2015 , ... InSphero AG, the ... cell culture models, has promoted Melanie Aregger to serve as Chief Operating Officer. ... served on the management team and was promoted to Head of InSphero ...
Breaking Biology Technology: