Savostin V A, Arkhipenko S V
Arkh Anat Gistol Embriol. 1984 Aug;87(8):32-9.
Quantitative investigations on variability of visual morphological parameters in neurons BB1, BB3-5 and clusters BBb have been performed on the ventral side of the visceral ganglion in 20 molluscs Lymnaea stagnalis L. (height of the shell -45.5-1.3 mm, variation coefficient -2.9%) cought in the same pond and on the same day. Statistical analysis of the data obtained is performed by means of the methods applied for analysing small independent samples. A probability character of visual identification and an essential variability are demonstrated for the parameters of the neuron BB1 (diameter, position, colour), of the number of giant and/or large neurons BB3-5 and the cluster BBb neurons. The variation character of the parameters mentioned is asymmetric. It is possible to speak on a greater determinancy of a preferable gradation of the parameters. The interconnection of the variability and the determinancy of the morphological signs with the identificity and functioning of the neuronal elements are discussed. A suggestion is made that identification of the neurons according to both their morphological and functional criteria, as a whole, can have a probability character. The data considered in the work make doubt the invariance of the neurons studied in the mollusc Lymnaea stagnalis L.
对20只池塘椎实螺（Lymnaea stagnalis L.）（壳高45.5 - 1.3毫米，变异系数2.9%）内脏神经节腹侧的BB1、BB3 - 5神经元以及BBb神经元簇的视觉形态学参数变异性进行了定量研究，这些椎实螺于同一天在同一池塘捕获。运用分析小独立样本的方法对所获数据进行统计分析。结果表明，BB1神经元的参数（直径、位置、颜色）、BB3 - 5巨型和/或大型神经元数量以及BBb神经元簇的参数在视觉识别方面具有概率特征且存在显著变异性。上述参数的变异特征不对称。可以认为参数的优选等级具有更大的确定性。文中讨论了形态学特征的变异性和确定性与神经元元件的识别及功能之间的相互联系。有人提出，总体而言，根据神经元的形态和功能标准对其进行识别可能具有概率特征。该研究中的数据让人对池塘椎实螺中所研究神经元的不变性产生怀疑。
