The Experts below are selected from a list of 201 Experts worldwide ranked by ideXlab platform

Hideo Yano - One of the best experts on this subject based on the ideXlab platform.

  • Somatosensory graviception inhibits soleus H-reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental brain research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P

  • somatosensory graviception inhibits soleus h reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental Brain Research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P<0.05). During NG and HG, there was a linear relationship between the BGA and the H-reflex amplitude; the difference in the SOL H-reflex amplitude between both gravity conditions could be explained in terms of the BGA level. However, during MG, despite the absence of BGA, the SOL H-reflex amplitude was larger than that during NG. Furthermore, when the subjects voluntarily activated the SOL by applying a load to the lower limb joints and spine by pulling a handle upward, this H-reflex enhancement almost disappeared. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column might play a role in reducing the excitability of the SOL motoneuron pool to Ia afferent inputs by presynaptic inhibition.

  • Somatosensory graviception inhibits the soleus H-reflex in standing man - a parabolic flight experiment-.
    Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 2002
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to la afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions (micro gravity (MG), normal gravity (NG), and hyper gravity) were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 seconds while the subjects kept an Erect Posture. The background electromyographic activity (BGA) of the SOL was almost absent during MG. The SOL H-reflex amplitude was significantly larger during MG than during NG. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column play a role in reducing the excitability of the SOL motoneuron pool to la afferent inputs by presynaptic inhibition.

Tasuku Miyoshi - One of the best experts on this subject based on the ideXlab platform.

  • Somatosensory graviception inhibits soleus H-reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental brain research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P

  • somatosensory graviception inhibits soleus h reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental Brain Research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P<0.05). During NG and HG, there was a linear relationship between the BGA and the H-reflex amplitude; the difference in the SOL H-reflex amplitude between both gravity conditions could be explained in terms of the BGA level. However, during MG, despite the absence of BGA, the SOL H-reflex amplitude was larger than that during NG. Furthermore, when the subjects voluntarily activated the SOL by applying a load to the lower limb joints and spine by pulling a handle upward, this H-reflex enhancement almost disappeared. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column might play a role in reducing the excitability of the SOL motoneuron pool to Ia afferent inputs by presynaptic inhibition.

  • Somatosensory graviception inhibits the soleus H-reflex in standing man - a parabolic flight experiment-.
    Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 2002
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to la afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions (micro gravity (MG), normal gravity (NG), and hyper gravity) were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 seconds while the subjects kept an Erect Posture. The background electromyographic activity (BGA) of the SOL was almost absent during MG. The SOL H-reflex amplitude was significantly larger during MG than during NG. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column play a role in reducing the excitability of the SOL motoneuron pool to la afferent inputs by presynaptic inhibition.

Kimitaka Nakazawa - One of the best experts on this subject based on the ideXlab platform.

  • Somatosensory graviception inhibits soleus H-reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental brain research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P

  • somatosensory graviception inhibits soleus h reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental Brain Research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P<0.05). During NG and HG, there was a linear relationship between the BGA and the H-reflex amplitude; the difference in the SOL H-reflex amplitude between both gravity conditions could be explained in terms of the BGA level. However, during MG, despite the absence of BGA, the SOL H-reflex amplitude was larger than that during NG. Furthermore, when the subjects voluntarily activated the SOL by applying a load to the lower limb joints and spine by pulling a handle upward, this H-reflex enhancement almost disappeared. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column might play a role in reducing the excitability of the SOL motoneuron pool to Ia afferent inputs by presynaptic inhibition.

  • Somatosensory graviception inhibits the soleus H-reflex in standing man - a parabolic flight experiment-.
    Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 2002
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to la afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions (micro gravity (MG), normal gravity (NG), and hyper gravity) were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 seconds while the subjects kept an Erect Posture. The background electromyographic activity (BGA) of the SOL was almost absent during MG. The SOL H-reflex amplitude was significantly larger during MG than during NG. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column play a role in reducing the excitability of the SOL motoneuron pool to la afferent inputs by presynaptic inhibition.

Hirofumi Sekiguchi - One of the best experts on this subject based on the ideXlab platform.

  • Somatosensory graviception inhibits soleus H-reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental brain research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P

  • somatosensory graviception inhibits soleus h reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental Brain Research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P<0.05). During NG and HG, there was a linear relationship between the BGA and the H-reflex amplitude; the difference in the SOL H-reflex amplitude between both gravity conditions could be explained in terms of the BGA level. However, during MG, despite the absence of BGA, the SOL H-reflex amplitude was larger than that during NG. Furthermore, when the subjects voluntarily activated the SOL by applying a load to the lower limb joints and spine by pulling a handle upward, this H-reflex enhancement almost disappeared. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column might play a role in reducing the excitability of the SOL motoneuron pool to Ia afferent inputs by presynaptic inhibition.

  • Somatosensory graviception inhibits the soleus H-reflex in standing man - a parabolic flight experiment-.
    Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 2002
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to la afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions (micro gravity (MG), normal gravity (NG), and hyper gravity) were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 seconds while the subjects kept an Erect Posture. The background electromyographic activity (BGA) of the SOL was almost absent during MG. The SOL H-reflex amplitude was significantly larger during MG than during NG. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column play a role in reducing the excitability of the SOL motoneuron pool to la afferent inputs by presynaptic inhibition.

Toshitaka Kimura - One of the best experts on this subject based on the ideXlab platform.

  • Somatosensory graviception inhibits soleus H-reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental brain research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P

  • somatosensory graviception inhibits soleus h reflex during Erect Posture in humans as revealed by parabolic flight experiment
    Experimental Brain Research, 2003
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Takashi Komeda, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to Ia afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions [microgravity (MG), normal gravity (NG), and hypergravity (HG)] were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 s while the subjects kept an Erect Posture. The stimulus intensity was controlled automatically on a real-time basis by personal computer to induce the constant amplitude of M-wave (10±5% of maximal M-wave amplitude). The background electromyographic activity (BGA) of the SOL was largest during HG, while it was almost absent during MG. The SOL H-reflex amplitude was significantly larger during HG and MG than during NG (P<0.05). During NG and HG, there was a linear relationship between the BGA and the H-reflex amplitude; the difference in the SOL H-reflex amplitude between both gravity conditions could be explained in terms of the BGA level. However, during MG, despite the absence of BGA, the SOL H-reflex amplitude was larger than that during NG. Furthermore, when the subjects voluntarily activated the SOL by applying a load to the lower limb joints and spine by pulling a handle upward, this H-reflex enhancement almost disappeared. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column might play a role in reducing the excitability of the SOL motoneuron pool to Ia afferent inputs by presynaptic inhibition.

  • Somatosensory graviception inhibits the soleus H-reflex in standing man - a parabolic flight experiment-.
    Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 2002
    Co-Authors: Tasuku Miyoshi, Daichi Nozaki, Hirofumi Sekiguchi, Toshitaka Kimura, Takeshi Sato, Kimitaka Nakazawa, Hideo Yano
    Abstract:

    The purpose of this study was to investigate how gravity level affects the excitability of the soleus muscle (SOL) motoneuron pool to la afferent input while Erect Posture is maintained in humans. Three healthy male subjects participated in an experiment whereby three different gravity conditions (micro gravity (MG), normal gravity (NG), and hyper gravity) were imposed using a parabolic flight procedure. The SOL H-reflex was evoked every 2 seconds while the subjects kept an Erect Posture. The background electromyographic activity (BGA) of the SOL was almost absent during MG. The SOL H-reflex amplitude was significantly larger during MG than during NG. These results suggest that the somatosensory systems detecting a load at the lower limbs and/or vertebral column play a role in reducing the excitability of the SOL motoneuron pool to la afferent inputs by presynaptic inhibition.