TY - JOUR
T1 - No effect of targeted memory reactivation during sleep on retention of vocabulary in adolescents
AU - Wilhelm, Ines
AU - Schreiner, Thomas
AU - Beck, Jonas
AU - Rasch, Björn
N1 - Funding Information:
This work was supported by the Child Research Centre of the University Children’s Hospital in Zürich, the University of Zürich (Forschungskredit) and by three grants of the Swiss National Science Foundation (SNSF, P300P1_174450, 100014_162388, 10001C_179241). We thank Anna Wick for assistance in data analysis and Louisa Clarke for helpful comments on an earlier version of this manuscript. Non-financial Disclosure: none.
Publisher Copyright:
© 2020, The Author(s).
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/3/6
Y1 - 2020/3/6
N2 - Re-exposure of newly acquired vocabulary during sleep improves later memory recall in healthy adults. The success of targeted memory reactivation (TMR) during sleep presumably depends on the presence of slow oscillations (i.e., EEG activity at a frequency of about 0.75 Hz). As slow oscillating activity is at its maximum during adolescence, we hypothesized that TMR is even more beneficial at this developmental stage. In the present study, adolescents aged 11 to 13 learnt Dutch vocabulary in the evening and were tested on recall performance the next morning. Half of the words were presented via loudspeakers during post-learning periods of NREM (Non Rapid Eye Movement) sleep in order to stimulate memory reactivation. Unexpectedly, TMR during sleep did not improve memory on the behavioral level in adolescents. On the oscillatory level, successful reactivation during sleep resulted in the characteristic increase in theta power over frontal brain regions, as reported in adults. However, we observed no increase in spindle power during successful reactivation. Possible factors that may explain the lacking effect of TMR in adolescents in this study such as differences in learning abilities and pre-sleep performance levels are discussed.
AB - Re-exposure of newly acquired vocabulary during sleep improves later memory recall in healthy adults. The success of targeted memory reactivation (TMR) during sleep presumably depends on the presence of slow oscillations (i.e., EEG activity at a frequency of about 0.75 Hz). As slow oscillating activity is at its maximum during adolescence, we hypothesized that TMR is even more beneficial at this developmental stage. In the present study, adolescents aged 11 to 13 learnt Dutch vocabulary in the evening and were tested on recall performance the next morning. Half of the words were presented via loudspeakers during post-learning periods of NREM (Non Rapid Eye Movement) sleep in order to stimulate memory reactivation. Unexpectedly, TMR during sleep did not improve memory on the behavioral level in adolescents. On the oscillatory level, successful reactivation during sleep resulted in the characteristic increase in theta power over frontal brain regions, as reported in adults. However, we observed no increase in spindle power during successful reactivation. Possible factors that may explain the lacking effect of TMR in adolescents in this study such as differences in learning abilities and pre-sleep performance levels are discussed.
UR - http://www.scopus.com/inward/record.url?scp=85081316740&partnerID=8YFLogxK
U2 - 10.1038/s41598-020-61183-z
DO - 10.1038/s41598-020-61183-z
M3 - Journal articles
C2 - 32144326
AN - SCOPUS:85081316740
SN - 2045-2322
VL - 10
SP - 4255
JO - Scientific Reports
JF - Scientific Reports
IS - 1
M1 - 4255
ER -