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Related Experiment Videos

Abnormal air-righting reflex in striatal rats.

K Masuda1, T Yamaguchi

  • 1Graduate School of Engineering and Sciences, Yamagata University, Yonezawa, 992-8510 Japan.

The Japanese Journal of Physiology
|June 24, 2000
PubMed
Summary

Higher brain function influences dynamic postural control. Decerebrate rats showed disrupted air-righting reflexes, indicating higher brain centers, excluding the cortex, can interfere with brainstem reflexes.

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Area of Science:

  • Neuroscience
  • Physiology
  • Motor Control

Background:

  • Dynamic postural control is crucial for survival.
  • The brainstem is known to control basic reflexes like the air-righting reflex.
  • The role of higher brain centers in modulating these reflexes is less understood.

Purpose of the Study:

  • To investigate the influence of higher brain structures on dynamic postural control.
  • To compare the air-righting reflex in rats with different decerebration levels.

Main Methods:

  • Comparison of air-righting reflexes in intact rats and decerebrate rats (thalamic, mesencephalic, striatal).
  • Assessment of righting movement coordination and execution.

Main Results:

  • Thalamic and mesencephalic decerebrate rats showed largely intact righting reflexes.
  • Striatal decerebrate rats exhibited disrupted coordination of righting movements.
  • These findings suggest higher brain centers impact reflex control.

Conclusions:

  • The higher brain, even without cortical control, can modulate brainstem reflex centers.
  • Specific subcortical structures (e.g., striatum) play a role in integrating postural control.
  • Decerebration studies offer insights into the neural basis of dynamic postural stability.

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