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🧪 Signal Detection Theory Simulator - Noise & Signal Curves

Interactive psychophysics perception simulator exploring sensory thresholds, signal detection theory, psychometric functions, and perceptual biases with comprehensive guides and FAQ.

Physics & Mechanics2DModerate60 FPS📱 Mobile-adapted

⚙ Under the hood

Adjust stimulus intensity, background noise, and response bias to watch two live probability curves - noise and signal - shift, spread, and overlap on the canvas, with a movable decision-criterion line marking hits and false alarms in real time.

Sensory ThresholdsSignal DetectionPerceptual Biases

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