A person's emotional response to an unsettling or traumatic event may actually be heightened by sleep, according to the results of a polysomnography study.
There was a better memory of negative pictures in the group that was exposed to them just before sleep (F=20.87, P<0.001) and no significant interaction in the group x emotional response interaction (F=0.99, P=0.32), reported Rebecca M.C. Spence, PhD, and colleagues from the University of Massachusetts in Amherst, in the Journal of Neuroscience.
Recent studies have shown that sleep is an important aspect of consolidation of memories. The authors wanted to investigate how memory processing may relate to changes in emotional reactivity during sleep.
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