Home▸Neuroscience & Biophysics▸Growth Cone Chemotaxis: Axon Pathfinding by Guidance Gradients

Growth Cone Chemotaxis: Axon Pathfinding by Guidance Gradients

2D companion to the 3D growth-cone chemotaxis scene: the same Weber-Fechner fractional-sensing turning law, attractant/repellent guidance gradients and receptor gain and cytoskeletal noise, read directly off a live top-down concentration field and axon trail.

Neuroscience & Biophysics2DAdvanced60 FPS📱 Mobile-adapted⇄ 3D version

Details

CategoryNeuroscience & Biophysics

RenderingCanvas 2D

DifficultyAdvanced

Target FPS60

ControlsSliders: Netrin-1 attractant strength (0-100, default 60), Semaphorin-3A repellent strength (0-100, default 30), gradient steepness (20-100, default 60), receptor sensitivity/gain (5-100, default 50), cytoskeletal noise (0-60, default 15); reset button respawns the growth cone at its starting position.

neuroscienceaxon guidancechemotaxisgrowth conedevelopmental biology

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This is the 2D counterpart to the 3D growth-cone chemotaxis scene, computing the identical guidance-molecule physics in a flattened top-down field: an axon's growth cone advances through concentric attractant (Netrin-1) and repellent (Semaphorin-3A) concentration rings, steering according to the same Weber–Fechner fractional-sensing law real growth cones obey. Tune each source's concentration, the gradient's spatial decay length, receptor gain and cytoskeletal noise, and watch the live readouts of sensed concentration, Weber fraction, distance-to-target and axon length track the trail drawn across the field in real time.

⚙ Under the hood

2D companion to the 3D growth-cone chemotaxis scene: the same Weber-Fechner fractional-sensing turning law, attractant/repellent guidance gradients, receptor gain and cytoskeletal noise, read directly off a live top-down concentration field and axon trail.

neuroscienceaxon guidancechemotaxisgrowth conedevelopmental biology

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install