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Story summary
- Massachusetts Institute of Technology (MIT) neuroscientists have found that about 30% of synapses in the adult mouse cortex are silent.
- They used the eMAP technique to reveal filopodia hosting these inactive synapses.
- By pairing glutamate release with electrical signals, they activated the silent synapses.
- The results imply the adult brain retains flexible learning connections, with aging potentially reducing memory adaptability.
