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Related Experiment Videos

The cortical activation pattern during bilateral arm raising movements.

Sung Ho Jang1, Jung Pyo Seo1, Seung-Hyun Lee2

  • 1Department of Physical Medicine and Rehabilitation, College of Medicine, Yeungnam University, Daegu, Republic of Korea.

Neural Regeneration Research
|April 13, 2017
PubMed
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Bilateral arm raising exercises activate key brain regions like the primary sensorimotor cortex. These movements show promise for brain function recovery and rehabilitation.

Area of Science:

  • Neuroscience
  • Rehabilitation Medicine
  • Motor Control

Background:

  • Bilateral arm raising movements are a long-standing rehabilitation technique.
  • The specific effects of these movements on the cerebral cortex remain under-investigated.

Purpose of the Study:

  • To investigate cortical activation during bilateral arm raising movements.
  • To measure hemodynamic responses in specific brain regions using functional near-infrared spectroscopy (fNIRS).

Main Methods:

  • Ten healthy subjects performed bilateral arm raising at 0.5 Hz.
  • Functional near-infrared spectroscopy (fNIRS) with 49 channels was employed.
  • Oxyhemoglobin and total hemoglobin levels were measured in the primary sensorimotor cortex, premotor cortex, supplementary motor area, prefrontal cortex, and posterior parietal cortex.
Keywords:
bilateral arm raisingcorticoreticulospinal tractcorticospinal tractfunctional NIRSmotor controlnerve regenerationneural regenerationneuronal activation

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Main Results:

  • Significant activation was observed in the primary sensorimotor cortex and premotor cortex in both hemispheres.
  • Hemodynamic responses (oxyhemoglobin and total hemoglobin) were elevated in the sensorimotor cortex, premotor cortex, supplementary motor area, and prefrontal cortex compared to the posterior parietal cortex.
  • Arm somatotopic areas within the primary sensorimotor cortex and premotor cortex showed clear activation.

Conclusions:

  • Bilateral arm raising movements induce widespread neuronal activation across multiple cortical areas.
  • These findings suggest that bilateral arm raising exercises are beneficial for brain function recovery and rehabilitation.