ABSTRACT
The recording of biopotentials generated by individual nerve cells in the central and peripheral nervous system is important in brain function studies. It helps us to understand the basic structure of neurons and the neural system, the interaction among neurons and how the brain processes information to control all basic bodily functions. The action potential is the basis for transmitting a nerve stimulus. If a stimulus propagates by the charge it stimulates, the electric signal decreases as a result of the resistance of the tissue and cannot transmit more than several centimetres. From a group of tissues or even organs we can measure the bioelectric potential, such as the electromyogram, electrocardiogram, electroretinogram and electroencephalogram. The number of recording sites and pattern of the recording sites can be varied according to the requirements. This is of great advantage compared to the conventional metal microelectrode and glass micropipette electrode.
