Control of octopus arm extension by a peripheral motor program
Control of octopus arm extension by a peripheral motor program
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DOI：
10.1126/science.1060976
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发表时间：
2001-09-07
期刊：
影响因子：
56.9
通讯作者：
Hochner, B
中科院分区：
文献类型：
--
作者：
Sumbre, G;Gutfreund, Y;Hochner, B
对于目标导向的手臂运动，神经系统产生一系列运动指令，使手臂朝向目标。章鱼手臂的控制尤其复杂，因为手臂可以向任何方向移动，几乎有无限个自由度。在这里，我们表明，手臂的延伸可以引起机械或电气的手臂，其与大脑的连接已被切断。这些延伸显示出与正常行为几乎相同的运动学特征，这表明自主运动的基本运动程序嵌入在手臂本身的神经回路中。这种外围运动程序代表了对这种高度冗余的附属物的运动控制的相当大的简化。
For goal-directed arm movements, the nervous system generates a sequence of motor commands that bring the arm toward the target. Control of the octopus arm is especially complex because the arm can be moved in any direction, with a virtually infinite number of degrees of freedom. Here we show that arm extensions can be evoked mechanically or electrically in arms whose connection with the brain has been severed. These extensions show kinematic features that are almost identical to normal behavior, suggesting that the basic motor program for voluntary movement is embedded within the neural circuitry of the arm itself. Such peripheral motor programs represent considerable simplification in the motor control of this highly redundant appendage.