Abstract
In this study we examined connections between vertebral motion and patterns of muscle activation during voluntary head tracking movements. A Rhesus(Macaca mulatto) monkey was trained to produce sinusoidal tracking movements of the head in the sagittal plane while seated. Radio-opaque markers were placed in the cervical vertebrae, and intramuscular patch electrodes were implanted to record from eight neck muscles. Videofluoroscopic images of cervical vertebral motion, and EMG (electromyographic) responses were simultaneously recorded. Experimental results demonstrated that head and vertebrae moved synchronously and that motion occurred primarily at skull-C1, C6-C7 and C7-T1. Our findings illustrate that although the biomechanical constraints of each species may limit the number of solutions available, it is the task requirements that appear to govern CNS (central nervous system) selection of movement behaviors.
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References
Dunbar, D. C, Horak, F. B., Macpherson, J. M. and Rushmer, D. S., I986, “Neural Control of Quadrupedal and Bipedal Stance: Implications for the Evolution of Erect Posture,”American Journal of Physical Anthropololgy, Vol. 69, pp. 93–105.
Graf, W., De Waele, C. and Vidal, P. P., 1995, “Functional Anatomy of the Head-Neck Motor System of Quadrupedal and Bipedal Mammals,”Journal of Anatomy, Vol. 186, pp. 55–74.
Howell, A. B. and Straus, W. L., 1933,The muscular system, Williams and Wilkins, Baltimore, MD, pp. 89–188.
Keshner, E. A., Campbell, D., Katz, R. and Peterson, B.W., 1989, “Neck Muscle Activation Patterns in Humans During Isometric head Stabilization”Experimental Brain Research, Vol. 75, pp. 335–344.
Keshner, E. A., Baker, J. F., Banovetz, J. and Peterson, B.W., 1992, “Patterns of Neck Muscle Activation in Cats During Reflex and Voluntary head Movements,”Experimental Brain Research, Vol. 88, pp. 361–374.
Keshner, E. A., 1994, “Vertebral Orientations and Muscle Activation Patterns During Controlled head Movements in Cats” Experimental Brain Research, Vol. 98, pp. 546–550.
Keshner, E. A., Statler, K. D. and Delp, S. L., 1997, “Kinematics of the Freely Moving head and Neck in the Alert Cat,”Experimental Brain Research, Vol. 115, pp. 257–266.
Lockhart, R. D., Hamilton, G. F. and Fyfe, F. W., 1972,Anatomy of the Human Body, J. B. Lippincott, Philadelphia, PA.
Macpherson, J. M., Horak, F. B., Dunbar, D.C. and Dow, R. S., 1989, “Stance Dependence of Automatic Postural Adjustments in Humans,”Experimental Brain Research, Vol. 78, pp. 557–566.
Richmond, F. J. R. and Vidal, P.P., 1988,Control of Head Movement, Oxford University Press, New York, NY, pp. 1–21.
Richmond, F. J. R., Thomson, D. B. and Loeb, G. E., 1992, “Electromyographic Studies of Neck Muscles in the Intact Cat. I. Patterns of Recruitment Underlying Posture and Movement During Natural Behaviors,”Experimental Brain Research, Vol. 88, pp. 41–58.
Runciman, R. J. and Richmond, F. J., 1997, “Shoulder and Forelimb Orientations and Loading in Sitting Cats: Implications for head and Shoulder Movement,”Journal of Biomechanics, Vol. 30, pp. 911–919.
Selbie, W. S., Thomson, D. B. and Richmond, F. J., 1993, “Suboccipital Muscles in the Cat Neck: Morphometry and Histochemistry of the Rectus Capitis Muscle Complex,”Journal of Morphololgy, Vol. 216, pp. 47–63.
Thomson, D. B., Loeb, G. E. and Richmond, F. J. R., 1994, “Effect of Neck Posture on the Aactivation of Feline Neck Muscles During Voluntary head Turns,”Journal of Neurophysiology, Vol. 72, pp. 2004–2014.
Vasavada, A. N., Li, S. and Delp, S. L., 1998, “Influence of Muscle Morphometry and Moment Arms on the Moment-Generating Capacity of Human Neck Muscles,”Spine, Vol. 23, pp. 412–422.
Vidal, P. P., Graf, W. and Berthoz, A., 1986, “The orientation of the Cervical Vertebral Column in Unrestrained Awake Animals. I. Resting Position,”Experimental Brain Research, Vol. 61, pp. 549–559.
Wickland, C. R., Baker, J. F. and Peterson, B. W., 1991, “Torque Vectors of Neck Muscles in the Cat,” Experimental Brain Research, Vol. 84, pp. 649–659.
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Choi, H., Keshner, E. & Peterson, B.W. Musculoskeletal kinematics during voluntary head tracking movements in primate. KSME International Journal 17, 32–39 (2003). https://doi.org/10.1007/BF02984283
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DOI: https://doi.org/10.1007/BF02984283