Tomohisa Okada

Summary

Affiliation: Institute of Biomedical Research and Innovation
Country: Japan

Publications

  1. ncbi Age-dependent plasticity in the superior temporal sulcus in deaf humans: a functional MRI study
    Norihiro Sadato
    National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, 444 8585, Japan
    BMC Neurosci 5:56. 2004
  2. ncbi Reduced responsiveness is an essential feature of chronic fatigue syndrome: a fMRI study
    Masaaki Tanaka
    Department of Physiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahimachi, Osaka 545 8585, Japan
    BMC Neurol 6:9. 2006
  3. ncbi Mechanisms underlying fatigue: a voxel-based morphometric study of chronic fatigue syndrome
    Tomohisa Okada
    National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444 8585, Japan
    BMC Neurol 4:14. 2004
  4. ncbi Feasibility of internally referenced brain temperature imaging with a metabolite signal
    Kagayaki Kuroda
    Department of Image Based Medicine, Institute of Biomedical Research and Innovation, Kobe, Japan
    Magn Reson Med Sci 2:17-22. 2003
  5. ncbi Magnetic field strength increase yields significantly greater contrast-to-noise ratio increase: Measured using BOLD contrast in the primary visual area
    Tomohisa Okada
    National Institute for Physiological Sciences, Okazaki, 444-8585, Japan
    Acad Radiol 12:142-7. 2005
  6. ncbi Functional association of the amygdala and ventral prefrontal cortex during cognitive evaluation of facial expressions primed by masked angry faces: an event-related fMRI study
    Michio Nomura
    Division of Social and Human Environment, Graduate School of Environmental Studies, Nagoya University, 464 8601, Nagoya, Japan
    Neuroimage 21:352-63. 2004
  7. ncbi A variant C178T in the regulatory region of the serotonin receptor gene HTR3A modulates neural activation in the human amygdala
    Tetsuya Iidaka
    Department of Psychology, Graduate School of Environmental Studies, Nagoya University, Nagoya, Aichi 464 8601, Japan
    J Neurosci 25:6460-6. 2005
  8. ncbi Accuracy of image fusion using a fixation device for whole-body cancer imaging
    Yuji Nakamoto
    Department of Image-based Medicine, Institute of Biomedical Research and Innovation, 2-2 Minatojima Minamimachi, Chuo-ku, Kobe 650-0047, Japan
    AJR Am J Roentgenol 184:1960-6. 2005
  9. ncbi Tactile estimation of the roughness of gratings yields a graded response in the human brain: an fMRI study
    Ryo Kitada
    Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
    Neuroimage 25:90-100. 2005
  10. ncbi Reproducibility of magnetic resonance spectroscopy in correlation with signal-to-noise ratio
    Tomohisa Okada
    Department of Molecular Imaging, Institute of Biomedical Research and Innovation, 2 2 Minatojima Minamimachi, Chuouku, Kobe, 650 0047, Japan
    Psychiatry Res 156:169-74. 2007

Collaborators

  • Masaaki Tanaka
  • Robert V Mulkern
  • Kagayaki Kuroda
  • KULLERVO H HYNYNEN
  • A Matsumura
  • Norihiro Sadato
  • Tetsuya Iidaka
  • Yuji Nakamoto
  • Ryo Kitada
  • Michio Nomura
  • Yoshiharu Yonekura
  • Yoko Kinoshita
  • Hidekazu Kawashima
  • Setsu Sakamoto
  • Michikazu Matsumura
  • Susan J Lederman
  • Eiri Minota
  • Tomonori Kito
  • Yukiko Yamamoto
  • Takanori Kochiyama
  • Michio Senda
  • Norio Ozaki
  • Junpei Nogawa
  • Keiichi Matsumoto
  • Atsushi Matsumoto
  • Tatsuyo Suzuki
  • Nakao Iwata
  • Toshihiro Hashimoto
  • Harumi Itoh
  • Ken-Ichi Matsuki
  • Takehiro Hasegawa
  • Masaki Yoshida
  • Ken Ichi Matsuki
  • Hiroki Yamada
  • Hideki Ohira
  • Kaoruko Haneda

Detail Information

Publications10

  1. ncbi Age-dependent plasticity in the superior temporal sulcus in deaf humans: a functional MRI study
    Norihiro Sadato
    National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, 444 8585, Japan
    BMC Neurosci 5:56. 2004
    ..The task was sentence comprehension in Japanese sign language...
  2. ncbi Reduced responsiveness is an essential feature of chronic fatigue syndrome: a fMRI study
    Masaaki Tanaka
    Department of Physiology, Osaka City University Graduate School of Medicine, 1 4 3 Asahimachi, Osaka 545 8585, Japan
    BMC Neurol 6:9. 2006
    ..Although the neural mechanism of chronic fatigue syndrome has been investigated by a number of researchers, it remains poorly understood...
  3. ncbi Mechanisms underlying fatigue: a voxel-based morphometric study of chronic fatigue syndrome
    Tomohisa Okada
    National Institute for Physiological Sciences, 38 Nishigonaka, Myodaiji, Okazaki, Aichi 444 8585, Japan
    BMC Neurol 4:14. 2004
    ..Intense long-term fatigue is a symptom of chronic fatigue syndrome, which is used as a model to study the mechanisms underlying fatigue...
  4. ncbi Feasibility of internally referenced brain temperature imaging with a metabolite signal
    Kagayaki Kuroda
    Department of Image Based Medicine, Institute of Biomedical Research and Innovation, Kobe, Japan
    Magn Reson Med Sci 2:17-22. 2003
    ..5 cm3 and 4.5 min. A higher signal-to-noise ratio and optimization of the water and outer-volume suppression capabilities will be required to further enhance the temperature-mapping capabilities...
  5. ncbi Magnetic field strength increase yields significantly greater contrast-to-noise ratio increase: Measured using BOLD contrast in the primary visual area
    Tomohisa Okada
    National Institute for Physiological Sciences, Okazaki, 444-8585, Japan
    Acad Radiol 12:142-7. 2005
    ..5 T. CONCLUSION: There was a greater-than-linear increase in the contrast-to-noise ratio compared with the increase of field strength, demonstrating an advantage of using higher field strengths in fMRI studies...
  6. ncbi Functional association of the amygdala and ventral prefrontal cortex during cognitive evaluation of facial expressions primed by masked angry faces: an event-related fMRI study
    Michio Nomura
    Division of Social and Human Environment, Graduate School of Environmental Studies, Nagoya University, 464 8601, Nagoya, Japan
    Neuroimage 21:352-63. 2004
    ..These results are discussed in terms of the functional association between the right PFC and the amygdala and its influence on cognitive processing...
  7. ncbi A variant C178T in the regulatory region of the serotonin receptor gene HTR3A modulates neural activation in the human amygdala
    Tetsuya Iidaka
    Department of Psychology, Graduate School of Environmental Studies, Nagoya University, Nagoya, Aichi 464 8601, Japan
    J Neurosci 25:6460-6. 2005
    ..The present study may contribute to elucidating a possible link among genes, the brain, and behavior in normal populations and may help reveal the biological basis of neuropsychiatric disorders...
  8. ncbi Accuracy of image fusion using a fixation device for whole-body cancer imaging
    Yuji Nakamoto
    Department of Image-based Medicine, Institute of Biomedical Research and Innovation, 2-2 Minatojima Minamimachi, Chuo-ku, Kobe 650-0047, Japan
    AJR Am J Roentgenol 184:1960-6. 2005
    ..7 +/- 2.5 mm and 6.9 +/- 2.9 mm, respectively. CONCLUSION: Our preliminary data indicate that this technique is a simple and practical method for manual image fusion that may be acceptable in clinical settings...
  9. ncbi Tactile estimation of the roughness of gratings yields a graded response in the human brain: an fMRI study
    Ryo Kitada
    Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan
    Neuroimage 25:90-100. 2005
    ..The lateral prefrontal area might play an important cognitive role in tactile estimation of surface roughness, whereas the PO and insula might be involved in the sensory processing that is important for estimating surface roughness...
  10. ncbi Reproducibility of magnetic resonance spectroscopy in correlation with signal-to-noise ratio
    Tomohisa Okada
    Department of Molecular Imaging, Institute of Biomedical Research and Innovation, 2 2 Minatojima Minamimachi, Chuouku, Kobe, 650 0047, Japan
    Psychiatry Res 156:169-74. 2007
    ..The results indicate that MRS measurements with high SNR should be used to obtain reliable assessments of mI/Cr as accurate diagnostic indicator of AD in clinical MR examinations...