Bioelectricity in Motion — Bioelectricity Nexus

Original animated illustrations of the bioelectric phenomena that drive healing and regeneration. These are recreated in our own visual style from the science popularized in Robert O. Becker's The Body Electric — not reproductions of any copyrighted figures.

The Current of Injury

Intact skin and tissue maintain a steady transepithelial voltage. When tissue is wounded, that voltage seal is broken and ionic current flows out through the injury site — the 'current of injury' first measured in the 19th century and central to Becker's work on regeneration.

  • Healthy epithelium is polarized: positive outside, negative inside
  • A wound short-circuits this battery, driving a measurable electric current toward the injury
  • This endogenous current is an early signal that helps direct cell migration and healing

    • Salamander Limb Regeneration & the Biphasic Voltage Curve

    Salamanders regrow amputated limbs. Becker recorded the electrical potential at the stump over time and found a biphasic curve: an initial positive spike at injury followed by a swing strongly negative during the active regeneration phase, before returning toward baseline as the new limb completes.

  • Phase 1 — injury: the stump goes briefly positive
  • Phase 2 — regeneration: the potential swings sharply negative as the blastema forms and the limb regrows
  • Recovery: the voltage relaxes back toward baseline as patterning completes

    • Animals that cannot mount this negative-going phase (such as adult frogs) heal with scar tissue instead of regenerating.