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Readers muse about memory, magnetic monopoles and more

Your letters and comments on the February 3, 2018 issue of Science News

10:20am, March 9, 2018

Memory lane

Inspired by flatworm memory experiments from the 1950s, researchers are on the hunt for the elusive engram — the physical mark that a memory leaves on the brain — Laura Sanders reported in “Somewhere in the brain is a storage device for memories” (SN: 2/3/18, p. 22).

Readers flooded Science News with their thoughts and questions on the topic.

Elizabeth Elliott wondered if Alzheimer’s disease might affect how memories are stored deep in the brain.

MIT neuroscientist Susumu Tonegawa has pulled up silent engrams — memories that aren’t readily accessible — from the brains of mice with signs of

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