A new joint study by Tel Aviv University (TAU) and Weizmann Institute of Science researchers has yielded an innovative method for bolstering memory processes in the brain during sleep.
The method relies on a memory-evoking scent administered to one nostril. It helps researchers understand how sleep aids memory, and in the future could possibly help to restore memory capabilities following brain injuries, or help treat people with post-traumatic stress disorder (PTSD) for whom memory often serves as a trigger.
The new study was led by Ella Bar, a PhD student at TAU and the Weizmann Institute of Science. Other principal investigators include Prof. Yuval Nir of TAU’s Sackler Faculty of Medicine and Sagol School of Neuroscience, as well as Profs. Yadin Dudai, Noam Sobel and Rony Paz, all of Weizmann’s Department of Neurobiology. It was published in Current Biology on March 5.
“We know that a memory consolidation process takes place in the brain during sleep,” Bar explains. “For long-term memory storage, information gradually transitions from the hippocampus — a brain region that serves as a temporary buffer for new memories — to the neocortex. But how this transition happens remains an unsolved mystery.”