de Vries Jurryt, Ischebeck Britta K, Voogt Lennard P, Janssen Malou, Frens Maarten A, Kleinrensink Gert-Jan, van der Geest Jos N
J. de Vries, MSc, Department of Neuroscience, Erasmus MC, Rotterdam, the Netherlands, and Department of Physical Therapy, Rotterdam University of Applied Sciences, Rotterdam, the Netherlands.
B.K. Ischebeck, MSc, Department of Neuroscience, Erasmus MC, and Spine and Joint Centre, Rotterdam, the Netherlands.
Phys Ther. 2016 Aug;96(8):1190-5. doi: 10.2522/ptj.20150211. Epub 2016 Feb 4.
Neck pain is a widespread complaint. People experiencing neck pain often present an altered timing in contraction of cervical muscles. This altered afferent information elicits the cervico-ocular reflex (COR), which stabilizes the eye in response to trunk-to-head movements. The vestibulo-ocular reflex (VOR) elicited by the vestibulum is thought to be unaffected by afferent information from the cervical spine.
The aim of the study was to measure the COR and VOR in people with nonspecific neck pain.
This study utilized a cross-sectional design in accordance with the STROBE statement.
An infrared eye-tracking device was used to record the COR and the VOR while the participant was sitting on a rotating chair in darkness. Eye velocity was calculated by taking the derivative of the horizontal eye position. Parametric statistics were performed.
The mean COR gain in the control group (n=30) was 0.26 (SD=0.15) compared with 0.38 (SD=0.16) in the nonspecific neck pain group (n=37). Analyses of covariance were performed to analyze differences in COR and VOR gains, with age and sex as covariates. Analyses of covariance showed a significantly increased COR in participants with neck pain. The VOR between the control group, with a mean VOR of 0.67 (SD=0.17), and the nonspecific neck pain group, with a mean VOR of 0.66 (SD=0.22), was not significantly different.
Measuring eye movements while the participant is sitting on a rotating chair in complete darkness is technically complicated.
This study suggests that people with nonspecific neck pain have an increased COR. The COR is an objective, nonvoluntary eye reflex and an unaltered VOR. This study shows that an increased COR is not restricted to patients with traumatic neck pain.
颈部疼痛是一种普遍的主诉。经历颈部疼痛的人通常会出现颈部肌肉收缩时间的改变。这种改变的传入信息会引发颈眼反射（COR），该反射会在躯干至头部运动时稳定眼球。前庭诱发的前庭眼反射（VOR）被认为不受来自颈椎的传入信息影响。
本研究的目的是测量非特异性颈部疼痛患者的COR和VOR。
本研究采用符合STROBE声明的横断面设计。
当参与者坐在黑暗中的旋转椅上时，使用红外眼动追踪设备记录COR和VOR。通过对水平眼位求导来计算眼速度。进行参数统计。
对照组（n = 30）的平均COR增益为0.26（标准差 = 0.15），而非特异性颈部疼痛组（n = 37）为0.38（标准差 = 0.16）。进行协方差分析以分析COR和VOR增益的差异，将年龄和性别作为协变量。协方差分析显示颈部疼痛参与者的COR显著增加。对照组的平均VOR为0.67（标准差 = 0.17），非特异性颈部疼痛组的平均VOR为0.66（标准差 = 0.22），两组之间的VOR无显著差异。
在参与者完全坐在黑暗中的旋转椅上时测量眼动在技术上很复杂。
本研究表明，非特异性颈部疼痛患者的COR增加。COR是一种客观的、非自主性的眼反射，且VOR未改变。本研究表明，COR增加并不局限于创伤性颈部疼痛患者。
