TY  - JOUR
EP  - 9
VL  - 33
UR  - https://doi.org/10.1111/jsr.14177
A1  -  Reichardt Richárd
A1  -  Király Anna
A1  -  Sz?ll?si Ágnes
A1  -  Racsmány Mihály
A1  -  Simor Péter Dániel
SN  - 0962-1105
Y1  - 2024///
TI  - A daytime nap with REM sleep is linked to enhanced generalization of emotional stimuli
JF  - JOURNAL OF SLEEP RESEARCH
N2  - How memory representations are shaped during and after their encoding is a central question in the study of human memory. Recognition responses to stimuli that are similar to those observed previously can hint at the fidelity of the memories or point to processes of generalization at the expense of precise memory representations. Experimental studies utilizing this approach showed that emotions and sleep both influence these responses. Sleep, and more specifically rapid eye movement sleep, is assumed to facilitate the generalization of emotional memories. We studied mnemonic discrimination by the emotional variant of the Mnemonic Separation Task in participants (N = 113) who spent a daytime nap between learning and testing compared with another group that spent an equivalent time awake between the two sessions. Our findings indicate that the discrimination of similar but previously not seen items from previously seen ones is enhanced in case of negative compared with neutral and positive stimuli. Moreover, whereas the sleep and the wake groups did not differ in memory performance, participants entering rapid eye movement sleep exhibited increased generalization of emotional memories. Our findings indicate that entering into rapid eye movement sleep during a daytime nap shapes emotional memories in a way that enhances recognition at the expense of detailed memory representations.
ID  - publicatio35718
AV  - public
IS  - 5
ER  -