About electricity inside human body (electric pulses)

i need to know; what is the difference between electricity in the human body and the other electricity that we know and how to convert one to the other?

Physiological electrical pulses are not due to electron flow. The current is ionic. Other than that electricity is always due to movement of charge. Even in the normal day to day use this happens in capacitors, batteries, electrolytic cells and such. There is nothing much to convert one into the other.
ECG, EEG and EMG are examples of bio electric signals being read by external instruments. A suitable electrode is needed to transfer the small bio signals.

okay! thanks a lot...............

i'm in the last year of engineering could u help me to choose my G.project iam really confused

What is a G.Project? Where are you located? Are you supposed to build some hardware? If so, who funds it? Is it a team activity? Will there be a supervisor from your college?