ABSTRACT
Physiological systems generate signals of di erent types: electrical, mechanical, chemical, magnetic, and thermal.1
e c ell ph ysiological ac tivity i n d i erent b iological s tructures is associated with electrical processes, such as the ionic interchange at the cellular membrane or active mechanisms such as metabolism.2 Although most cells present bioelectric events, only a f ew p resent ele ctrical p otential c hanges t hat re veal i ts physiological op eration.3 ese sig nals a re o f g reat i nterest i n biomedical app lications, si nce t hey c an p rovide i nformation about the operation of the biological system.
