Psychology :: How emotionally charged events leave their mark on memory

Researchers have uncovered new evidence in mice that may explain how emotionally charged situations can leave such a powerful mark on our memories. Surges of the stress hormone norepinephrine (also known as noradrenaline) that often accompany strong emotions spark a series of molecular events that ultimately strengthen the connections between neurons, the team reports in the Oct. 5, 2007, issue of the journal Cell, a publication of Cell Press.

Cholera :: Cholera in Iraq – update 3

Since the cholera outbreak was first detected in Kirkuk, Northern Iraq, on 14_August 2007, it has spread to 9 out of 18 provinces across Iraq. It is estimated that more than 30 000 people have fallen ill with acute watery diarrhoea, among which 3 315 were identified as positive for Vibrio cholerae, the bacterium causing the disease.

Brain :: Brain needs perfection in synapse number

Like Goldilocks, the brain seeks proportions that are just right. The proper number of synapses or communication between nerve cells, determined early in life, is crucial to having a healthy brain that can learn and retain information.

Juice :: New study shows Concord grape juice has a heart-healthy effect

Laboratory research just presented at the WINEHEALTH 2007 conference in Bordeaux, France, showed that Concord grape juice stimulated an arterial relaxation effect in a similar fashion to red wine. The French researchers also reported that the Concord grape juice induced a prolonged relaxation effect that has not yet been reported with red wine.

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