Movement-related potentials associated with motor timing errors as determined by internally cued movement onset

Jee Seon Ahn, Jun Ho Yoon, Jae Jin Kim, Jin Young Park

Research output: Contribution to journalArticlepeer-review


Objective Accurate motor timing is critical for efficient motor control of behaviors; however, the effect of motor timing abilities on movement-related neural activities has rarely been investigated. The current study aimed to examine the electrophysiological correlates of motor timing errors. Methods Twenty-two healthy volunteers performed motor timing tasks while their electroencephalographic and electromyographic (EMG) activities were simultaneously recorded. The average of intervals between consecutive EMG onsets was calculated separately for each subject. Motor timing error was calculated as an absolute discrepancy value between the subjects’ produced and given time interval. A movement-related potential (MRP) analysis was conducted using readings from Cz electrode. Results Motor timing errors and MRPs were significantly correlated. Our principal finding was that only Bereitschaftpotential (BP) and motor potential (MP), not movement monitoring potential, were significantly attenuated in individuals with motor timing errors. Motor timing error had a significant effect on the amplitude of the late BP and MP. Conclusion The findings provide electrophysiological evidence that motor timing errors correlate with the neural processes involved in the generation of self-initiated voluntary movement. Alterations in MRPs reflect central motor control processes and may be indicative of motor timing deficits. Psychiatry Investig 2021;18(7):670-678.

Original languageEnglish
Pages (from-to)670-678
Number of pages9
JournalPsychiatry Investigation
Issue number7
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (no. NRF2019R1A 2C4069598).

Publisher Copyright:
© 2021 Korean Neuropsychiatric Association.

All Science Journal Classification (ASJC) codes

  • Psychiatry and Mental health
  • Biological Psychiatry


Dive into the research topics of 'Movement-related potentials associated with motor timing errors as determined by internally cued movement onset'. Together they form a unique fingerprint.

Cite this