Stability of the head in pitch (neck flexion-extension): studies in normal subjects and patients with axial rigidity.

@article{Gresty1989StabilityOT,
  title={Stability of the head in pitch (neck flexion-extension): studies in normal subjects and patients with axial rigidity.},
  author={Michael Andrew Gresty},
  journal={Movement disorders : official journal of the Movement Disorder Society},
  year={1989},
  volume={4 3},
  pages={233-48}
}
The dynamic stability of the head in pitch during normal upright posture has been studied in normal subjects and patients with neurological disease affecting neck muscle tone by examining angular head acceleration responses to unpredictable linear motion of the trunk in the direction of surge. Within the frequency range of natural head movements the transfer function between head and trunk for both normal subjects and patients approximated a second-order linear differential equation involving… CONTINUE READING

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The dynamic stability of the head in pitch during normal upright posture has been studied in normal subjects and patients with neurological disease affecting neck muscle tone by examining angular head acceleration responses to unpredictable linear motion of the trunk in the direction of surge .
The dynamic stability of the head in pitch during normal upright posture has been studied in normal subjects and patients with neurological disease affecting neck muscle tone by examining angular head acceleration responses to unpredictable linear motion of the trunk in the direction of surge .
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