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3D Dendritic Growth & Synaptic Pruning Simulator

Interactive 3D neuroplasticity simulator: watch dendritic spines physically grow between co-active neurons and unused synapses get pruned away in a spatial neural network, with learning rate, decay and stimulation pattern tunable in real time.

Neuroscience & Biophysics3DEasy60 FPS📱 Mobile-adapted⇄ 2D version

Neuroplasticity is not only a change in signal strength — it is often a physical change in brain wiring. This 3D simulator renders that structural side directly: a network of twelve neurons floats in space, and every synapse that crosses a Hebbian growth threshold sprouts a real dendritic spine mesh connecting the two cells, which is deleted again if the connection falls out of use. Watch a correlated stimulation pattern carve out a dense, permanent sub-network while unused connections between groups are pruned away, or switch to random stimulation to see structural learning fail to consolidate at all.

⚙ Under the hood

Visualize dynamic synapse growth and pruning as neurons connect and disconnect based on weight thresholds.

neuroscienceplasticitylearningsynapses

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install