Oh, that's terrifying...

This scanning electron microscope image shows a neural culture growing on a high-density multi-electrode array. This system allowed researchers to train neurons to play the video game Pong. (https://www.npr.org/sections/health-shots/2022/10/14/1128875298/brain-cells-neurons-learn-video-game-pong)

They've just announced this...

Real neurons are cultivated inside a nutrient rich solution, supplying them with everything they need to be healthy. They grow across a silicon chip, which sends and receives electrical impulses into the neural structure.

They're calling it Wetware (http://www.catb.org/jargon/html/W/wetware.html)

With papers in Neuron and everything - "In vitro neurons learn and exhibit sentience when embodied in a simulated game-world" https://www.cell.com/neuron/fulltext/S0896-6273(22)00806-6

Networkable and everything. -> https://corticallabs.com/cloud.html