title: Arm-use dependent lateralization of gamma and beta oscillations in primate medial motor areas.
abstract: The neurons in the motor cortex show lateralization depending on the arm to use. To investigate if local field potential (LFP) oscillations change with contralateral and ipsilateral arm use, we analyzed the power of LFP in supplementary motor areas (SMA) and pre-SMA while animals performed a delayed-response arm use task under visual guidance and memory-based. LFP power changed with the laterality of the arm use, but it was frequency dependent. Specifically, power in the gamma range increased during contralateral arm use, while beta power increased with ipsilateral arm use. Subsequently, we confirmed that the frequency-dependent laterality was true also for the memory-driven movements. Our data therefore suggest that gamma oscillation is linked to the local neuronal activities in the contralateral hemisphere, and beta oscillation is related to withholding undesired arm movements by suppression of the local neuronal activities of the ipsilateral hemisphere.
authors: Department of Applied Mathematics, Fukuoka University, Fukuoka 814-0180, Japan; Neuroinformatics Japan Center, RIKEN Brain Science Institute, Wako 351-0198, Japan.
authors: Ryosuke
authors: R
authors: Hosaka
authors: Department of Physiology, Tohoku University School of Medicine, Sendai 980-8575, Japan; Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Kawaguchi 332-1102, Japan.
authors: Toshi
authors: T
authors: Nakajima
authors: Institute of Industrial Science, The University of Tokyo, Tokyo 153-8505, Japan.
authors: Kazuyuki
authors: K
authors: Aihara
authors: Neuroinformatics Japan Center, RIKEN Brain Science Institute, Wako 351-0198, Japan.
authors: Yoko
authors: Y
authors: Yamaguchi
authors: Department of Physiology, Tohoku University School of Medicine, Sendai 980-8575, Japan; Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency, Kawaguchi 332-1102, Japan. Electronic address: hmushiak@med.tohoku.ac.jp.
authors: Hajime
authors: H
authors: Mushiake
mesh_terms: D000465:Algorithms; D000818:Animals; D001132:Arm / Q000502:physiology*; D001611:Beta Rhythm / Q000502:physiology; D004569:Electroencephalography; D007839:Functional Laterality / Q000502:physiology*; D065818:Gamma Rhythm / Q000502:physiology; D008251:Macaca; D008279:Magnetic Resonance Imaging; D008568:Memory / Q000502:physiology; D009044:Motor Cortex / Q000502:physiology*; D009474:Neurons / Q000502:physiology; D011323:Primates; D011597:Psychomotor Performance / Q000502:physiology
keywords: Local field potential; Supplementary motor area