Jaw muscle (EMG) activity and amplitude scaling of jaw movements during eating in pigeon (Columba livia)
Jaw muscle (EMG) activity and amplitude scaling of jaw movements during eating in pigeon (Columba livia)
复制标题
鸽子（Columba livia）进食时下颌肌肉（EMG）活动和下颌运动的幅度缩放
DOI：
10.1007/bf00191709
复制
发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Zeigler,HP
中科院分区：
文献类型：
--
作者：
Bout,R;Zeigler,HP
在鸽子进食顺序的每个阶段，下颌张开幅度（张开）都会根据食物的大小进行调整；首先是在接触之前（抓取），然后是在定位食物时（定位），最后是在食物通过口腔的运动过程中（口内运输）。本研究的第一部分检查了摄入不同尺寸食物颗粒期间下颌运动的运动学，以确定速度和上升时间变量的相对贡献。第二部分详细说明了介导进食序列每个阶段的肌肉活动模式，并确定如何调节这些模式以产生打嗝大小的调整。速度和上升时间变量对控制打嗝的相对贡献在进食序列的每个阶段都不同。然而，对于任何颗粒尺寸，开口上升时间的变化可以以补偿方式起作用，以最小化开口“下冲”。进食顺序的每个阶段都是由特征性的肌肉活动模式介导的。将张口尺寸调整为颗粒尺寸涉及对该模式的系统调制，并且调制的参数在不同阶段中以可以反映每个阶段的功能要求的方式不同。
During each phase of the pigeon's eating sequence, jaw opening amplitude (gape) is adjusted to the size of the food object; first prior to contact (Grasping), again in positioning the food (Stationing), and finally, during its movement through the oral cavity (Intraoral Transport). Part I of this study examined jaw movement kinematics during ingestion of different size food pellets to determine the relative contribution of velocity and rise time variables. Part II specified the muscle activity patterns mediating each phase of the eating sequence, and determined how these patterns are modulated to produce adjustments of gape size.The relative contribution of velocity and rise time variables to the control of gape differs in each phase of the eating sequence. However, for any pellet size, variations in opening rise time may function in a compensatory manner to minimize gape “undershooting”. Each phase of the eating sequence is mediated by a characteristic muscle activity pattern. The adjustment of gape size to pellet size involves systematic modulation of this pattern, and the parameters modulated differ in the different phases in a manner which may reflect the functional requirements of each phase.