GoKawiilMyriad's 'Let's Build a Brain' series shows simple neuron circuits producing complex behavior
A Myriad educational article walks through building a simulated creature called a 'spark' using minimal neural circuits—starting with one light-sensing neuron wired to one motor neuron, then expanding to two eyes and two flippers. The demonstrations show that even these simple wiring setups produce surprisingly complex, sometimes counterintuitive movement patterns, such as a spark that appears to avoid light rather than seek it.
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The piece illustrates a long-standing neuroscience question—how small neural circuits generate observable behavior—using an accessible, simulated model rather than real biological experiments. This kind of simplified demonstration could help explain foundational concepts in computational neuroscience and robotics to a general audience, though it is presented as an educational exercise rather than new research.
- The article builds a simulated creature ('spark') with minimal neurons to illustrate how brains generate behavior.
- A single sensor-motor neuron pair lets the spark move toward light only inconsistently.
- Adding a second eye and flipper unexpectedly causes the spark to steer away from light instead of toward it, revealing how circuit wiring shapes behavior.
Source: aatishb.com, 2026-10-27
Published there as: “Simple circuits can create complex behaviors”
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