Baluch Farhan, Itti Laurent
Neuroscience Graduate Program, University of Southern California, Los Angeles, CA 90089, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2012;2012:2388-91. doi: 10.1109/EMBC.2012.6346444.
We present a self-contained portable USB based device that can amplify and record small bioelectric signals from insects and animals. The system combines a purpose built low noise amplifier with off the shelf components to provide a low cost low power system for recording electrophysiological signals. Using open source software the system is programmed as a simple USB device and can be connected to any USB capable computer for recording data. This simple and universal interface provides the ability to connect to a variety of systems. Open source acquisition software was also written to record signals under the linux operating system. Performance analysis shows that our device is able to record good quality signals both indoors and outdoors and delivers this performance at a very low cost. Compared to larger systems our device provides the additional advantage of portability given that it can fit into a pocket and costs a fraction of large systems used in electrophysiology labs.
我们展示了一种独立的便携式USB设备，它可以放大并记录来自昆虫和动物的微小生物电信号。该系统将定制的低噪声放大器与现成的组件相结合，以提供一个用于记录电生理信号的低成本、低功耗系统。使用开源软件，该系统被编程为一个简单的USB设备，可以连接到任何具备USB功能的计算机上进行数据记录。这种简单且通用的接口提供了连接各种系统的能力。还编写了开源采集软件，以便在Linux操作系统下记录信号。性能分析表明，我们的设备能够在室内和室外记录高质量的信号，并且以非常低的成本实现了这种性能。与更大的系统相比，我们的设备具有便携性这一额外优势，因为它可以装进口袋，并且成本仅为电生理实验室中使用的大型系统的一小部分。
