Cited by 241Motor Control and AdaptationNeural and Behavioral Psychology StudiesFree Will and Agency

Subregions within the Supplementary Motor Area Activated at Different Stages of Movement Preparation and Execution

Lee, Kyoung-Min, Chang, Kee-Hyun, Roh, Jae-Kyu·1999·NeuroImage

Abstract

Previous studies have provided evidence that the primary motor area (M1) is involved in actual execution of a motor program, while the premotor area (PreMA) and the supplementary motor area (SMA) play a role in its preparation. We have used the high temporospatial resolution of functional magnetic resonance imaging (fMRI) to study the relationship between stages of a motor program and activation of these motor-related cortical areas. Seven normal volunteers performed a delayed-motor task in which the preparation of finger movements was dissociated in time from movement execution, while event-related fMRI was obtained. The M1 and PreMA showed expected activation associated with execution and preparation stages, respectively. Within SMA, subregions with different temporal profiles of activation were identified: The anterior part became activated early in the preparation period, whereas the posterior part only with movement execution. This supports the notion that the classic SMA consists of the pre-SMA and SMA proper each with different functions.

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Crossref · 10.1006/nimg.1998.0393

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Authors
Lee, K.-M., Chang, K.-H., & Roh, J.-K.
Affiliations
Seoul National University (KR)
Venue
NeuroImage
Publisher
Elsevier BV
Published
1999-01
Volume
9
Issue
1
Pages
117-123
ISSN
1053-8119 (ISSN-L)
OpenAlex
W2070952322
Cited by
241
References
26
Citations by year
2026: 5 · 2025: 6 · 2024: 7 · 2023: 3 · 2022: 6 · 2021: 8 · 2020: 9 · 2019: 7 · 2018: 8 · 2017: 6 · 2016: 4 · 2015: 8 · 2014: 7 · 2013: 6 · 2012: 7
FWCI
6.67
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Memorial Sloan-Kettering Cancer Center
  • Fonds National de la Recherche Luxembourg
  • Korea Science and Engineering Foundation
  • Seoul National University Hospital
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Free Will and Agency
Keywords
supplementary motor area, pre-supplementary motor area, motor preparation, movement execution, primary motor cortex, premotor cortex, finger movement, event-related fMRI
MeSH terms
Adult, Attention, Brain Mapping, Contingent Negative Variation, Female, Humans, Magnetic Resonance Imaging, Male, Motor Cortex, Motor Skills, Psychomotor Performance, Reference Values

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