Campbell Kenneth S, Moss Richard L
Department of Physiology, University of Wisconsin-Madison, 53706, USA.
Am J Physiol Heart Circ Physiol. 2003 Dec;285(6):H2857-64. doi: 10.1152/ajpheart.00295.2003. Epub 2003 Aug 7.
SLControl is a computerized data acquisition and analysis system that was developed in our laboratory to help perform mechanical experiments using striated muscle preparations. It consists of a computer program (Windows 2000 or later) and a commercially available data acquisition board (16-bit resolution, DAP5216a, Microstar Laboratories, Bellevue, WA). Signals from the user's existing equipment representing force, fiber length (FL), and (if desired) sarcomere length (SL) are connected to the system through standard Bayonet Neill Concelman cables and saved to data files for later analysis. Output signals from the board control FL and trigger additional equipment, e.g., flash lamps. Windows dialogs drive several different experimental protocols, including slack tests and rate of tension recovery measurements. Precise measurements of muscle stiffness and force velocity/power characteristics can also be accomplished using SL and tension control, respectively. In these situations, the FL command signal is updated in real time (at rates > or =2.5 kHz) in response to changes in the measured SL or force signals. Data files can be exported as raw text or analyzed within SLControl with the use of built-in tools for cursor analysis, digital filtering, curve fitting, etc. The software is available for free download at http://www.slcontrol.com.
SLControl是我们实验室开发的一种计算机化数据采集与分析系统，用于辅助进行使用横纹肌标本的力学实验。它由一个计算机程序（Windows 2000或更高版本）和一块市售数据采集板（16位分辨率，DAP5216a，Microstar Laboratories，华盛顿州贝尔维尤）组成。来自用户现有设备的代表力、纤维长度（FL）以及（如有需要）肌节长度（SL）的信号，通过标准的卡口尼尔-康塞尔曼电缆连接到系统，并保存到数据文件中以供后续分析。采集板的输出信号控制纤维长度并触发其他设备，例如闪光灯。Windows对话框驱动几种不同的实验方案，包括松弛测试和张力恢复速率测量。肌肉刚度以及力-速度/功率特性的精确测量也可分别使用肌节长度和张力控制来完成。在这些情况下，纤维长度命令信号会根据测得的肌节长度或力信号的变化实时更新（更新速率≥2.5 kHz）。数据文件可以导出为原始文本格式，或者使用内置的光标分析、数字滤波、曲线拟合等工具在SLControl中进行分析。该软件可从http://www.slcontrol.com免费下载。
