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4. Predicting vestibular, proprioceptive, and biomechanical control strategies in normal and pathological head movements

Author

Peng, Grace C.Y., Hain, Timothy C., and Peterson, Barry W.

Subjects
Biomedical engineering -- Research, Vestibular apparatus -- Research, Reflexes -- Research, Head -- Psychological aspects, Neck -- Psychological aspects, Pathology -- Research, Biological sciences, Business, Computers, Health care industry
Abstract

Little is known of the functionality of the vestibulo-collic reflex (VCR) and cervico-collic reflex (CCR) during head and neck movements caused by perturbations of the trunk. Previously, we formulated mathematical expressions for these neck reflexes and incorporated them into a model of horizontal plane head movements. The formalism of this neuromechanical model allowed us to examine separately the main components of head movement control. In the present study, we examine selected parameters within the main components of the model, and associate variations of these parameters with disease processes affecting head and neck movements, such as loss of sensory input or modification in central or motor function. Our simulations led us to several conclusions. First, the probable use of the VCR and CCR in yaw plane had movements is to tune the head response. In the time domain, they diminish natural head oscillations (head wobble) related to head mechanics. Equivalently, in the frequency domain, they reduce the amplitude of head wobble (resonances) around 2 hz. Second, our simulations suggest that the VCR is about ten times stronger than the CCR in normal humans. Moreover, this disproportion is associated with only very minor contributions from the CCR in yaw. Third, head oscillations (or instability) can be generated by mechanical or neural changes in the head and neck system. Finally, readjustments of central nervous system dynamic operations could provide mechanisms to compensate for sensory and motor dysfunction caused by disease. Index Terms: Head, model, neck, reflex, vestibular

Published
1999

8. The State of the NIH BRAIN Initiative

Author

Koroshetz, Walter, primary, Gordon, Joshua, additional, Adams, Amy, additional, Beckel-Mitchener, Andrea, additional, Churchill, James, additional, Farber, Gregory, additional, Freund, Michelle, additional, Gnadt, Jim, additional, Hsu, Nina S., additional, Langhals, Nicholas, additional, Lisanby, Sarah, additional, Liu, Guoying, additional, Peng, Grace C.Y., additional, Ramos, Khara, additional, Steinmetz, Michael, additional, Talley, Edmund, additional, and White, Samantha, additional

Published
2018
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10. National Institutes of Health Research Plan on Rehabilitation

Author

O'Mara, Ann, primary, Rowland, Julia H., additional, Greenwell, Thomas N., additional, Wiggs, Cheri L., additional, Fleg, Jerome, additional, Joseph, Lyndon, additional, McGowan, Joan, additional, Panagis, James S., additional, Washabaugh, Charles, additional, Peng, Grace C.Y., additional, Bray, Rosalina, additional, Cernich, Alison N., additional, Cruz, Theresa H., additional, Marden, Sue, additional, Michel, Mary Ellen, additional, Nitkin, Ralph, additional, Quatrano, Louis, additional, Spong, Catherine Y., additional, Shekim, Lana, additional, Jones, Teresa L.Z., additional, Juliano-Bult, Denise, additional, Panchinson, David M., additional, Chen, Daofen, additional, Jakeman, Lyn, additional, Knebel, Ann, additional, Tully, Lois A., additional, Chan, Leighton, additional, Damiano, Diane, additional, Tian, Biao, additional, McInnes, Pamela, additional, Khalsa, Partap, additional, Reider, Eve, additional, Shurtleff, David, additional, Elwood, William, additional, Ballard, Rachel, additional, Ershow, Abby G., additional, and Begg, Lisa, additional

Published
2017
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11. Preface

Author

Lin, Ching-Long, primary, Peng, Grace C.Y., additional, and Karniadakis, George, additional

Published
2013
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