Watanabe S, Kawahara S
J Exp Biol. 1998 Apr;201 (Pt 7):925-30. doi: 10.1242/jeb.201.7.925.
We investigated the morphological characteristics of physiologically characterized neurones in the procerebrum (PC) of the terrestrial slug Limax marginatus. The electrophysiological characteristics of the neurones were determined using the perforated patch recording technique. By comparing the shapes and sizes of somata, we found that the somata of bursting neurones were larger and had more oblong shapes than those of nonbursting neurones, indicating that the bursting and nonbursting neurones in the PC could be discriminated on the basis of the sizes and shapes of their soma. Injection of fluorescent dyes into the bursting and nonbursting neurones revealed morphological differences in the neurites. The bursting neurones had extensive projections within the cell body layer, and the major neurites of the bursting neurones were oriented along the dorsal-ventral axis. In contrast, the nonbursting neurones had neurites extending into the neuropile layers, where terminals of both sensory and presumed output neurones exist.
我们研究了陆生蛞蝓宽带蛞蝓前脑(PC)中具有生理特征的神经元的形态特征。使用穿孔膜片钳记录技术确定神经元的电生理特征。通过比较细胞体的形状和大小,我们发现爆发性神经元的细胞体比非爆发性神经元的更大且形状更呈椭圆形,这表明前脑中的爆发性和非爆发性神经元可以根据其细胞体的大小和形状来区分。将荧光染料注入爆发性和非爆发性神经元后发现了神经突的形态差异。爆发性神经元在细胞体层内有广泛的投射,并且爆发性神经元的主要神经突沿背腹轴定向。相比之下,非爆发性神经元的神经突延伸到神经纤维层,感觉神经元和假定的输出神经元的终末都存在于该层。