Lannou J, Cazin L
Pflugers Arch. 1976 Nov 5;366(2-3):143-6. doi: 10.1007/BF00585869.
The activity of single fibers from the saccular nerve has been recorded in isolated head preparations in the frog (Rana esculenta). Nearly all the fibers present an activation or a depression of their activity during the tilting movement in a given direction. This is considered to correspond to the existence of two anatomical populations of haircells in the saccular macula which differ in their functional polarization. The activity of only some units (about 40%) remained increased or decreased when the head was in a tilted position for 4-5 min. This shows that the sacculus is sensitive to the direction of gravity.
在食用蛙（Rana esculenta）的离体头部标本中，已记录到球囊神经单纤维的活动。在向特定方向倾斜运动期间，几乎所有纤维的活动都出现增强或减弱。这被认为对应于球囊斑中存在两个解剖学上不同的毛细胞群体，它们在功能极化方面存在差异。当头处于倾斜位置4 - 5分钟时，只有一些单位（约40%）的活动仍保持增加或减少。这表明球囊对重力方向敏感。
