Reactivation-induced motor skill modulation does not operate at a rapid micro-timescale level

Area of Science:

• Cognitive Neuroscience
• Motor Learning
• Memory Research

Background:

• Consolidated memories can be modified after reactivation.
• Motor skill modulation is typically observed hours or days after reactivation.
• Rapid consolidation in early learning stages is known.

Purpose of the Study:

• To investigate if motor skill memories are susceptible to modifications after brief reactivations during early learning.
• To determine if post-encoding interference or performance enhancement occurs following rapid reactivation in initial learning stages.

Main Methods:

• Collected crowdsourced online motor sequence data.
• Tested for post-encoding interference and performance enhancement after brief reactivations.
• Compared results to control conditions.

Main Results:

• Memories formed during early learning stages were not susceptible to interference.
• No performance enhancement was observed within a rapid reactivation time window.
• Results indicate a lack of rapid modulation in early motor skill memory.

Conclusions:

• Reactivation-induced motor skill memory modulation may depend on macro-timescale consolidation.
• Significant memory modulation appears to require consolidation periods of hours or days.
• Early motor skill memories are resistant to rapid modification via brief reactivation.