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MIT Scientists Discover Millions of “Silent Synapses” in the Adult Brain

Summary by Science Daily
MIT neuroscientists have uncovered a surprising secret hidden in the adult brain: millions of “silent synapses,” dormant connections that lie in wait until new learning calls them into action. Once thought to exist only in early development, these inactive links make up about 30% of synapses in the adult cortex and can be rapidly activated to form fresh memories.

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Researchers at the Massachusetts Institute of Technology (MIT) have identified millions of ‘silent synapses’ in the adult brain, neuronal structures that remain inactive until activated by new experiences. This discovery, published in the journal Nature, reveals an unexplored aspect of neuroscience and its implications for memory and learning. Discovery of silent synapses in the adult brain The MIT research revealed that approximately 30% of syn…

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Science Daily broke the news in United States on Wednesday, May 6, 2026.
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