Navigation Links
Mice brains shrink during winter, impairing some learning and memory

The brains of one species of mouse actually shrink during the winter, causing the mice to have more difficulty with some types of learning, a new study found.

The results showed that, during the short days of winter, white-footed mice had impaired spatial memory ?the mental map that helps them remember important places in their environment.

This is one of the first studies to show seasonal changes in the structure and the functioning of brains of mammals, said Randy Nelson, co-author of the study and professor of psychology and neuroscience at Ohio State University .

The changes in the brain may help the mice conserve energy to survive during the cold winter season when food is scarce and conditions are harsh.

"The brain uses a lot of energy relative to its weight," Nelson said. "Like many mammals, mice need to reduce their energy costs during winter, and the brain is a good place to do that."

And while there are obviously many differences between mice and humans, studies like this may one day help researchers gain insight into seasonal brain dysfunctions in humans such as seasonal affective disorder, Nelson said.

Nelson conducted the study with Leah Pyter, a graduate student in neuroscience at Ohio State , and Brenda Reader, an undergraduate psychology major at Ohio State . The findings were published in the May 4 issue of the Journal of Neuroscience.

In one set of experiments, the researchers used 20 adult male white-footed mice. Using artificial light, some mice were kept in short days ?such as they would face in winter ?with eight hours of light per day for 13 weeks before the beginning of the study. Other mice were kept in long days, simulating summer, with 16 hours of daylight for 13 weeks.

Their spatial learning and memory were tested using a water maze test in which the mice had to swim to find an escape platform hidden just below the surface of opaque water. They were tested for several days to
'"/>

Source:Ohio State University


Page: 1 2 3

Related biology news :

1. Birds brains reveal source of songs
2. Supercomputers to focus brains on AIDS dilemma
3. Divergent life history shapes gene expression in brains of salmon
4. Jumping genes contribute to the uniqueness of individual brains
5. Experts discuss use of human stem cells in ape and monkey brains
6. Sharp older brains are not the same as younger brains
7. Animal brains hard-wired to recognize predators foot movements, Queens study suggests
8. Bird brains shrink from exposure to contaminants
9. Carnegie Mellon researchers discover key deficiencies in brains of people with autism
10. Gene therapy injected into the brains of mice with Huntingtons disease
11. Scientists identify 36 genes, 100 neuropeptides in honey bee brains
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Mice brains shrink during winter impairing some learning and memory

(Date:12/19/2014)... , Dec. 18, 2014 Research and ... the addition of the "iPhone 5S Fingerprint ... Report" report to their offering. ... the acquisition of AuthenTec in July 2012, Apple ... 5S. It is currently the only device of ...
(Date:12/19/2014)... , Dec. 18, 2014  23andMe, Inc., the ... a study that pinpoints fine-scale differences in genetic ancestry ... . Since immigrants first arrived more ... States has served as a meeting place ... American history and the ongoing mixing of peoples with ...
(Date:12/17/2014)... --Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ) ... Galaxy S5 - Home Button Synaptics Fingerprint Sensor ... http://photos.prnewswire.com/prnh/20130307/600769 ... the iPhone 5S, Samsung introduces for the first ... The Galaxy S5 home button presents an ...
Breaking Biology News(10 mins):iPhone 5S Fingerprint Sensor - Apple/AuthenTec TMDR92 & Sapphire - Technology Report 223andMe Study Sketches Genetic Portrait of the United States 223andMe Study Sketches Genetic Portrait of the United States 323andMe Study Sketches Genetic Portrait of the United States 4Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2
... New York University biologists have uncovered how the innate ... neurons. The findings, published as the cover study in ... neurons fight the virus at multiple stages--by preventing the ... virus' release, which could infect other cells in the ...
... today in the journal Genome,Research that they have ... a 554-kilobase-pair genomic,segment near the centromere of the ... genes that could be implicated in,sex-associated height differences ... one of the few holes remaining in the,"finished" ...
... in comparison to the 3.2 gigabases of its human ... 14 proteins, which play different roles in promoting viral ... host’s cellular machinery—including RNA polymerases, which carry out transcription—to ... chromosomal DNA. Once the virus is integrated (now called ...
Cached Biology News:NYU Study Reveals How Brain's Immune System Fights Viral Encephalitis 2Found: Missing sequence of the human Y chromosome 2Found: Missing sequence of the human Y chromosome 3Novel Enzyme Shows Potential As An Anti-HIV Target 2Novel Enzyme Shows Potential As An Anti-HIV Target 3
(Date:12/19/2014)... (PRWEB) December 19, 2014 Bioject ... developer and manufacturer of needle-free injection technology, today ... with Immunomic Therapeutics, Inc. (“ITI”) for ITI to ... with its LAMP™ vaccine platform. , In ... exclusive Worldwide license to the Biojector®-2000 that triggers ...
(Date:12/19/2014)... 19, 2014 BioPlus Specialty Pharmacy ... announces the promotion of Nick Maroulis, Pharm.D. to the ... Services. , In this position, Dr. Maroulis will ... managing the directors of our multi-site pharmacies as the ... 1997 and during that time he has served in ...
(Date:12/19/2014)... , Dec. 19, 2014  Roche (SIX: RO, ROG; ... Technologies, Inc. (Bina), a privately held company based ... USA. Bina provides a big data platform for ... (NGS) data. Bina,s proprietary on-market Genomic Management Solution, ... researchers to perform fast and scalable analyses to ...
(Date:12/19/2014)... Dec. 19, 2014 Decision Resources Group finds ... at a 12 percent compound annual growth rate through ... aging population and the increasing adoption of dental implants. ... will also spur demand for dental biomaterials because ... and periodontal treatments. Other key findings from ...
Breaking Biology Technology:Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 2Bioject and Immunomic Therapeutics Enter into an Agreement for License of Needle-Free Technology for LAMP-vax Vaccines 3BioPlus Specialty Pharmacy Promotes Dr. Nick Maroulis to Vice President of Specialty Pharmacy Services 2Roche acquires Bina Technologies and enters the genomic informatics market 2Roche acquires Bina Technologies and enters the genomic informatics market 3Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 2Latin American Dental Biomaterial Market Will Expand at a 12 Percent Annual Growth Rate Through 2023 3
... Jan. 3 Escalon Medical Corp.,(Nasdaq Capital Market: ... 510(k) clearance from the U.S. Food and Drug,Administration ... The MASTER-VU(TM) System consists of a B-scan probe ... (via a USB cable,connection) using Sonomed,s proprietary software, ...
... Jan. 3 Cinpathogen, through its,partnership in the ... clinical diagnostic technology consulting,services to Shanghai area hospitals. ... the,Shanghai Health Study, the Center has diagnosed and ... in collaboration with area,hospitals and colleagues at Fudan ...
... KENILWORTH, N.J., Jan. 2 Schering-Plough,Corporation (NYSE: ... and Drug,Administration (FDA) has assigned priority review status ... Sugammadex is specifically designed to reverse the ... States as ZEMURON(R) (rocuronium,bromide) and vecuronium bromide. Muscle ...
Cached Biology Technology:Escalon(R) Announces FDA 510(k) Clearance for Sonomed MASTER-VU(TM) B-Scan System 2Escalon(R) Announces FDA 510(k) Clearance for Sonomed MASTER-VU(TM) B-Scan System 3Cinpathogen Provides Clinical Diagnostic Consulting Services to Shanghai Area Hospitals 2Schering-Plough Announces New Drug Application for Sugammadex Assigned Priority Review Status by U.S. FDA 2Schering-Plough Announces New Drug Application for Sugammadex Assigned Priority Review Status by U.S. FDA 3Schering-Plough Announces New Drug Application for Sugammadex Assigned Priority Review Status by U.S. FDA 4