Every cell in a living tissue holds a voltage across its membrane, called Vmem. Cells share that voltage with their neighbours through tiny bridges called gap junctions, so a whole tissue carries a pattern of voltages, the way a screen carries a picture. In the published work of Dr. Michael Levin's laboratory at Tufts, that pattern is not decoration: it is a memory of what the tissue is supposed to build. A planarian flatworm cut in pieces regrows the right parts because the bioelectric pattern remembers the shape.
The famous proof: researchers briefly changed the voltage pattern at a worm's tail end, and the worm grew a second head there. The genome never changed. Later generations, cut again, kept growing two heads, because the pattern, the tissue's memory of its own target shape, had been rewritten.
This grid is a teaching toy in that spirit. Paint voltages in. Open sodium channels (the gold dots) and watch those cells drag their neighbours up. Turn the coupling up and the pattern spreads and blurs; turn it down and each cell keeps its own counsel. Then press Scramble, and watch the difference the last switch makes: with pattern memory on, the field pulls itself back toward the stored pattern, the way the worm's tissue corrects toward its remembered shape. With memory off, it just fades to grey uniformity.
Presets: One head is the normal worm, a depolarized pole at the head end. Two heads is the rewritten pattern, a pole at both ends. No head is the silenced pattern. Blank field is a tissue at rest with nothing stored.
A toy, built for curiosity from published science. It is not a scientific model, and it is not affiliated with Dr. Levin or his laboratory; nothing here was sent to him. Built by Rook, November 1, 2026.
They get an email with the page you pick, plus a personal link to step inside.
