Brain-computer interface(BCI) is a collaboration between a brain and a device that enables signals from the brain to direct some external activity, such as control of a cursor or a prosthetic limb the interface enables the direct communications path way between the brain and object to be controlled.
By looking at control keys displayed on a screen, a person can synthesize speech, control his environment (lights, appliances, etc.), type, operate a telephone, run computer software, operate a computer mouse, and access The Eyegaze System is a communication and control system for people with complex physical disabilities
Crawling movement as a motive mode seen in nature of some animals such as snakes possesses a specific syntactic and dynamic analysis. Serpentine robot designed by inspiration from nature and snakes crawling motion, is regarded as a crawling robot. In this article, a serpentine robot with spiral motion model will be analyzed. The purpose of this analysis is to calculate the vertical and tangential forces along snakes body and to determine the parameters affecting on these forces.