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­.s. Brain Project Puts Focus on Ethics

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Optical stimulation

Optical stimulation of light-responsive neurons in engineered mice can be used to create false memories.

Credit: Inbal Goshen and Karl Deisseroth

The false mouse memories made the ethicists uneasy. By stimulating certain neurons in the hippocampus, Susumu Tonegawa and his colleagues caused mice to recall receiving foot shocks in a setting in which none had occurred.

From Nature
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