Building an Actual Brain: Simulating 1,260 Spiking Neurons
The author, who builds AI agents and automation pipelines, decided to create an actual brain simulation using spiking neural networks (SNNs) instead of just improving language models. The resulting desktop companion, brAIn, has a simulated brain with 1,260 neurons, neuromodulators, and an LLM-powered speech layer.
Why it matters
This project demonstrates a novel approach to artificial general intelligence (AGI) that goes beyond just improving language models, by incorporating biologically-inspired neural networks and neuromodulation.
Key Points
- 1Spiking neural networks (SNNs) process information through neuron firing patterns, not static weight matrices
- 2brAIn has 1,260 Leaky Integrate-and-Fire neurons organized into 7 brain regions, learning through Spike-Timing-Dependent Plasticity
- 3brAIn has 4 neuromodulators (dopamine, noradrenaline, acetylcholine, serotonin) that influence its internal states and behaviors
- 4brAIn uses an LLM for language generation, but the spiking network determines what to communicate based on its internal state
Details
The author, who works at an AI agency building automation pipelines and dashboards, became dissatisfied with the limitations of language models (LLMs) like GPT and Claude. He decided to create an actual brain simulation using spiking neural networks (SNNs) instead. SNNs process information through the timing of neuron firing spikes, rather than static weight matrices, allowing them to 'experience' and learn from their environment. brAIn, the resulting desktop companion, has 1,260 Leaky Integrate-and-Fire neurons organized into 7 functional brain regions, connected by 50,000 synapses that learn through Spike-Timing-Dependent Plasticity. It also has 4 neuromodulators (dopamine, noradrenaline, acetylcholine, serotonin) that influence its internal states and behaviors. While SNNs are not well-suited for language processing, brAIn uses an LLM as a 'read-only speech layer' to translate its internal states into natural language.
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