‘In a groundbreaking new study, researchers at the University of California, San Diego erased and then reactivated memories by stimulating neurons in the brains of genetically engineered rats with a series of light pulses that have been previously shown to strengthen or weaken the connections between brain cells. This is the first study to be able to directly show that the strengthening or weakening of these connections, called synapses, is the underlying basis for memory. The study has been published in Nature.’ (IFLScience)