Neuroscience

Silent synapses are abundant in the adult brain

MIT neuroscientists have discovered that the adult brain contains millions of "silent synapses"—immature connections between neurons that remain inactive until they're recruited to help form new memories.

Medical research

The unexpected cells helping to shape young brains

When the brain first wires itself up in early development, it creates more connections than it actually needs. Some of these connections, or synapses, will transmit critical signals as young animals begin to sense their surroundings. ...

Genetics

Another byproduct of aging: Hypermutations in the brain

Genetic mutations in early development have been implicated in several psychiatric disorders such as autism and schizophrenia, symptoms of which typically manifest during childhood and early adulthood. However, mutations ...

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