A Rapid Form of Offline Consolidation in Skill Learning

Marlene Bönstrup*, Iñaki Iturrate, Ryan Thompson, Gabriel Cruciani, Nitzan Censor, Leonardo G. Cohen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


The brain strengthens memories through consolidation, defined as resistance to interference (stabilization) or performance improvements between the end of a practice session and the beginning of the next (offline gains) [1]. Typically, consolidation has been measured hours or days after the completion of training [2], but the same concept may apply to periods of rest that occur interspersed in a series of practice bouts within the same session. Here, we took an unprecedented close look at the within-seconds time course of early human procedural learning over alternating short periods of practice and rest that constitute a typical online training session. We found that performance did not markedly change over short periods of practice. On the other hand, performance improvements in between practice periods, when subjects were at rest, were significant and accounted for early procedural learning. These offline improvements were more prominent in early training trials when the learning curve was steep and no performance decrements during preceding practice periods were present. At the neural level, simultaneous magnetoencephalographic recordings showed an anatomically defined signature of this phenomenon. Beta-band brain oscillatory activity in a predominantly contralateral frontoparietal network predicted rest-period performance improvements. Consistent with its role in sensorimotor engagement [3], modulation of beta activity may reflect replay of task processes during rest periods. We report a rapid form of offline consolidation that substantially contributes to early skill learning and may extend the concept of consolidation to a time scale in the order of seconds, rather than the hours or days traditionally accepted.

Original languageEnglish
Pages (from-to)1346-1351.e4
JournalCurrent Biology
Issue number8
StatePublished - 22 Apr 2019


FundersFunder number
National Institute of Neurological Disorders and StrokeZIANS002978
Deutsche Akademie der Naturforscher Leopoldina - Nationale Akademie der WissenschaftenLPDS 2016-01


    • beta activity
    • consolidation
    • human motor learning
    • magnetoencephalography
    • offline learning
    • procedural memory
    • reactivation
    • replay
    • skill learning


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