Stolbkov Iu K, Orlov I V
Ross Fiziol Zh Im I M Sechenova. 2007 Sep;93(9):1012-23.
Intact pigeons were rotated in darkness in a horizontal plane at various orientations relative to axis of rotation, which passed between labyrinths, or was displaced relative to them. Trapezoidal (tests 1) and triangular (tests 2) rotation programs were used. In the tests 1, positive and negative angular accelerations were separated by two-minute periods of rotation with constant angular velocity. Such periods were absent in the tests 2. Results of the canal-otolith interactions in the tests 1 and 2 were different only in postrotatory nystagmi: the peak velocities of the slow phases decreased in both postrotatory nystagmi in the tests 1, but only in one of them in the tests 2. Apparently, at oppositely directed postrotatory nystagmi, decrease of peak velocities in the tests 1 is provided with different mechanisms. At one of them the decrease of nystagmus velocity reflects a result of a summation of canal and otolithic signals on the interneurones of the semicircular canal reflex arches, whereas at another one it is related with long-lasting activity imbalance of these interneurones which is supported by otolithic afferentation during rotation at constant angular velocity.
将完整的鸽子置于黑暗中，使其在水平面上相对于旋转轴以不同方向旋转，旋转轴位于迷路之间或相对于迷路发生位移。采用了梯形（测试1）和三角形（测试2）旋转程序。在测试1中，正、负角加速度被两分钟的匀速旋转期隔开。测试2中没有这样的时期。测试1和测试2中半规管 - 耳石相互作用的结果仅在旋转后眼震方面有所不同：测试1中两个旋转后眼震的慢相峰值速度均降低，但测试2中仅在其中一个眼震中降低。显然，在方向相反的旋转后眼震中，测试1中峰值速度的降低是由不同机制导致的。其中一种情况是，眼震速度的降低反映了半规管反射弧中间神经元上半规管和耳石信号的总和结果，而另一种情况则与这些中间神经元的长期活动失衡有关，这种失衡在匀速旋转期间由耳石传入信号维持。
