Tag Archives | Neurons

Aging Brains Made Youthful?

Photo: Mieciu K2 (CC)

Photo: Mieciu K2 (CC)

Can we restore our “mental sketch pads” by renewing how our brain holds memory on the neurological level? The National Geographic reports:

You can’t teach an old brain new tricks—but you can restore its ability to remember the old ones, a new study in monkeys suggests.

Chemicals given to rhesus macaques blocked a brain molecule that slows the firing of the brain’s nerve cells, or neurons, as we age—prompting those nerve cells to act young again.

“It’s our first glimpse of what’s going on physiologically that’s causing age-related cognitive decline,” said study leader Amy Arnsten, a neurobiologist at Yale University.

“We all assumed, given there’s a lot of architectural changes in aged brains … that we were stuck with it,” Arnsten said.

But with the new results, “the hopeful thing is that the neurochemical environment still makes a big difference, and we might be able to remediate some of these things.”

[Continues at National Geographic]

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Brain Development May Begin With Faulty Wiring

Photo: Ranveig

Via Live Science:

Very early in life, neurons in the brain begin forming connections with one another. But it turns out that during normal development, a startling number can link up to the wrong cells and must be pushed back in the right direction, according to a new study on baby mice.

The finding, detailed Feb. 8 in the journal PLoS Biology, could shed light on brain disorders such as autism, according to one researcher. Mice are often used as a model for human biology, and the researchers think a similar phenomenon occurs in humans.

An international research team made their discovery by observing the development of the cerebellum – a region of the brain responsible for motor control and also linked with attention, language and emotion in humans. During the first three weeks after a mouse is born, the neurons of the cerebellum connect to one another by forming synapses.

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