Comparison Between a Real Sequential Finger and Imagery Movements: An fMRI Study Revisited |
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| Authors: | Takefumi Ueno Masayuki Inoue Toshimasa Matsuoka Toshi Abe Hisao Maeda Kiichirou Morita |
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| Institution: | (1) Department of Neuropsychiatry Graduate School of Medical Sciences, Kyushu University, Maidashi 3-1-1, Fukuoka 812-8582, Fukuoka, Japan;(2) Department of Rehabilitation, International University of Health and Welfare, 137-1, Enokizu, Ookawa 831-8501, Japan;(3) Cognitive and Molecular Research Institute of Brain diseases, Kurume University, 67, Asahimachi, Kurume 830-0011, Japan;(4) Kawanonajima hospital, Najima 4-28-53, Fukuoka 813-0043, Fukuoka, Japan;(5) Department of Neuropsychiatry, Kurume University School of Medicine, 67, Asahimachi, Kurume 830-0011, Japan;(6) Department of Radiology, Kurume University School of Medicine, 67, Asahimachi, Kurume 830-0011, Japan;(7) Wakahisa hospital, Wakahisa 5-3-1, Fukuoka 815-0042, Fukuoka, Japan |
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| Abstract: | Recently, much discussion has been centered on the brain networks of recall, memory, and execution. This study utilized functional
magnetic resonance imaging to compare activation between a simple sequential finger movement (real task) and recalling the
same task (imagery task) in 15 right-handed normal subjects. The results demonstrated a greater activation in the contralateral
motor and somatosensory cortex during the real task, and a higher activation in the contralateral inferior frontal cortex,
ipsilateral motor, somatosensory cortex, and midbrain during the imagery task. These real task-specific areas and imagery-specific
areas, including the ipsilateral motor and somatosensory cortex, are consistent with recent studies. However, this is the
first report to demonstrate that the imagery-specific regions involve the ipsilateral inferior frontal cortex and midbrain.
Directly comparing the activation between real and imagery tasks demonstrated the inferior frontal cortex and midbrain to
therefore play important roles in cognitive feedback. |
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