Abstract

REYNOLDS, Jorge; BARRAGAN, Liliana  and  CUELLAR, Fabián. Bioamplifiers. Rev. Colom. Cardiol. [online]. 2011, vol.18, n.3, pp.131-143. ISSN 0120-5633.

Bioelectric signals refer to studies that began with the discovery of electricity in living subjects envisioned by Luigi Galvani and Alessandro Volta in the seventeenth century (Figure 1A and 1B) and demonstrated by Carlo Matteucci and his followers in the nineteenth century. The scope of this article aims to explain the origin of the amplifiers used in electrophysiology, analyzing a scientific need of the time that led to the construction of ever more specialized equipment, supplying the technological shortcomings of the experimentation in physics and physiology, to in turn, laying the foundations of disciplines such as electrocardiography, neurosciences, electromyography and electrophysiology in general.

Keywords : bioamplifiers; galvanometer; oscilloscope; transistors; tubes; Electrocardiography.

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