Hippocampus News and Research

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The hippocampus is a part of the forebrain, located in the medial temporal lobe. It belongs to the limbic system and plays major roles in short term memory and spatial navigation. Humans and other mammals have two hippocampi, one in each side of the brain.

Imaging study shows how memories become permanent

A new brain imaging study illustrates what happens to memories as time goes by.

29 Jan 2009

People who are socially active have lower risk for dementia

A new study shows that people who are socially active and not easily stressed may be less likely to develop dementia.

19 Jan 2009

Exposure to lead brings cognitive problems later in life

Both the developing brain and the aging brain can suffer from lead exposure.

12 Jan 2009

HRT linked to brain shrinkage, but not lesions

Two new studies show that commonly prescribed forms of postmenopausal hormone therapy may slightly accelerate the loss of brain tissue in women 65 and older beyond what normally occurs with aging.

12 Jan 2009

Growth of new brain cells requires 'epigenetic' switch

New cells are born every day in the brain's hippocampus, but what controls this birth has remained a mystery.

8 Jan 2009

A novel glioblastoma mouse model developed

Researchers at the Salk Institute for Biological Studies have developed a versatile mouse model of glioblastoma-the most common and deadly brain cancer in humans-that closely resembles the development and progression of human brain tumors that arise naturally.

5 Jan 2009

Researchers link blood sugar to normal cognitive aging

Maintaining blood sugar levels, even in the absence of disease, may be an important strategy for preserving cognitive health, suggests a study published by researchers at Columbia University Medical Center (CUMC).

1 Jan 2009

Matrix fragments trigger fatal excitement

Shredded extracellular matrix (ECM) is toxic to neurons. Chen et al. reveal a new mechanism for how ECM demolition causes brain damage. The study will appear in the December 29, 2008 issue of The Journal of Cell Biology (www.jcb.org).

30 Dec 2008

Why seniors forget negative events

It turns out there's a scientific reason why older people tend to see the past through rose-coloured glasses.

16 Dec 2008

Stressed-out mice reveal role of epigenetics in behavior

Research conducted by a team in Switzerland suggests that a family of genes involved in regulating the expression of other genes in the brain is responsible for helping us deal with external inputs such as stress.

12 Dec 2008

Decreased levels of binding gene affect memory and behavior

Reducing the activity of a gene called FKBP12 in the brains of mice affected neuron-to-neuron communication (synapse) and increased both fearful memory and obsessive behavior, indicating the gene could provide a target for drugs to treat diseases such as autism spectrum disorder, obsessive-compulsive disease and others, said researchers from Baylor College of Medicine in Houston in a report in the current issue of the journal Neuron.

10 Dec 2008

Cellular 'brakes' may slow memory process in aging brains

University of Florida researchers may have discovered why some brain cells necessary for healthy memory can survive old age or disease, while similar cells hardly a hairsbreadth away die.

10 Dec 2008

Brain deletion of FK506-binding protein enhances repetitive behaviors in mice

A new study reveals a link between dysregulation of a common signaling pathway and repetitive behaviors similar to those associated with multiple neurological and neurodegenerative disorders including, autism spectrum disorders, obsessive compulsive disorder, schizophrenia, and Huntington's disease.

10 Dec 2008

Stress-related disorders affect brain's processing of memory

Researchers using functional MRI (fMRI) have determined that the circuitry in the area of the brain responsible for suppressing memory is dysfunctional in patients suffering from stress-related psychiatric disorders.

3 Dec 2008

Researchers discover how brain cells can survive a stroke

Brain researchers at the University of Oslo in Norway have penetrated deeply into the innermost secrets of the brain to find out how brain cells can survive a stroke.

26 Nov 2008

Aging brain easily distracted

Canadian researchers have found more evidence that older adults aren't able to filter out distracting information as well as younger adults.

25 Nov 2008

Researchers discover mechanism vital to the development of the hippocampus

Astrophysicists peer into the far corners of deep space for dark matter, but for neuroscientists at the Queensland Brain Institute (QBI) exploring the unknown is much closer to home.

21 Nov 2008

Marijuana may be good for the aging brain

The more research they do, the more evidence Ohio State University scientists find that specific elements of marijuana can be good for the aging brain by reducing inflammation there and possibly even stimulating the formation of new brain cells.

19 Nov 2008

Exercise increases brain growth factor and receptors, prevents stem cell drop in middle age

A new study confirms that exercise can reverse the age-related decline in the production of neural stem cells in the hippocampus of the mouse brain, and suggests that this happens because exercise restores a brain chemical which promotes the production and maturation of new stem cells.

18 Nov 2008

How is our left brain is different from our right?

Since the historical discovery of the speech center in the left cortex in 150 years ago, functional differences between left and right hemisphere have been well known; language is mainly handled by left hemisphere, while spatial recognition is more specialized to the right hemisphere.

17 Nov 2008