检索结果-内蒙古大学图书馆

台湾医学 2003年第5期7卷 701-707页

作者：韓德生李志明張權維

Muscle fiber conduction velocity (MFCV) is the electrophysiological parameter representing the propagating velocity of muscle fiber action potentials. It is affected by ambient temperature. In order to measure the MFCV along rat quadriceps muscle in situ, stimulation was performed distally in the quadriceps muscle with a Tungsten microelectrode as active electrode and a monopolar electrode as reference. The single fiber EMG electrode, as a recording electrode, was inserted into the origin of quadriceps muscle. The average MFCV calculated as interelectrode distance divided by latency of 27 muscle fibers in 7 male Wistar rats, 16-24 weeks of age, of the same litter was 7.29±1.78 m/sec. The MFCVs between the right and left limbs were not different statistically. By changing the ambient temperature with thermostat and iced water, the study result showed a significant relationship between the intramuscular temperature and MFCV with correlation coefficients ranging from 0.81 to 0.96 in the 10 tested muscle fibers. The overall correlation coefficient of all sampled muscle fiber is 0.324 (p＜0.0001). However, more diverse relationship was observed between the intramuscular temperature and the amplitude of muscle fiber action potential among the 10 tested muscle fibers. Four of them are negatively related, two are positively related, and the remains are not related significantly. It was concluded that the measurement of MFCV with Tungsten microelectrode was feasible and precise. The MFCV was positively related with intramuscular temperature, but no linear relationship was observed between the amplitude of muscle fiber action potential and the intramuscular temperature.

关键词：肌纖維傳導速度肌肉內溫度鎢絲微電極

来源：评论

学校读者我要写书评

暂无评论

玻璃绝缘的钨丝微电极尖端的修整方法

引用

生理学报 1993年第2期45卷 196-199页

作者：徐杏珍中国科学院上海生理研究所上海200031

用微电极拉制器直接拉制成钨丝微电极的玻璃绝缘层在大多数情况下,裸露的尖端容易弯曲和过长。在显微镜下,可以用一种简单的方法把尖端弯曲和过长部分修整成任何需要的长度和形状。

关键词：钨丝微电极单细胞记录

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：