Interactive experiments that let you experience classic paradigms from cognitive science and neuroscience research. Test your perception, learning, and decision-making — then see how you compare.
Visual explanations of key concepts in cognitive neuroscience. Watch, interact, and build intuition for how the brain makes decisions.
Should you buy the silver? Watch the brain weigh subjective value against market price, accumulating evidence toward a BUY or DON'T BUY boundary.
Launch DemoHow does the brain decide what we perceive? See how an evidence accumulator integrates noisy sensory signals until committing to a choice.
Launch DemoAn agent discovers a restaurant's true quality through noisy feedback, updating its estimate one meal at a time. Watch prediction errors shrink as learning converges.
Launch DemoPrediction errors shift backward from reward to the earliest predictive cue over learning — the exact pattern seen in dopamine neuron recordings.
Launch DemoWatch values propagate backward from a goal as an agent walks Home → Park → Street → Coffee Shop. See how discount factor shapes the value gradient.
Launch DemoTwo slot machines with hidden payoff rates. Should you exploit the best arm or explore? Temperature τ controls the balance in this Boltzmann policy demo.
Launch DemoThe Critic learns state value V, the Actor learns action preferences m(a), both taught by a shared dopamine-like prediction error δ. Compare learning rates for each system.
Launch DemoStudy a list of words, then complete word stems like MOT___. Does prior exposure bias what comes to mind? Experience the priming effect — a hallmark of implicit memory.
Launch DemoGuide a rat through a three-armed maze and watch a hippocampal place cell fire. Rotate the maze and a visual cue card to discover that place fields are anchored to landmarks, not absolute position.
Launch DemoEach experiment is designed to illustrate key concepts in perception, learning, and decision-making. Run them yourself and explore the data.
Interactive classroom poll. Distribute 100 points across 5 categories and see the class consensus in real-time.
The classic perceptual decision-making paradigm. Detect coherent motion in noisy dot fields and experience how the brain accumulates evidence over time.
Explore the exploration-exploitation tradeoff. Learn which option pays out more while balancing the need to gather information vs. maximize rewards.
Experience cognitive interference firsthand. Name ink colors while ignoring word meanings and discover the limits of attentional control.
Discover hidden rules through trial and error, then adapt when the rules suddenly change. A test of cognitive flexibility and hypothesis testing.
These experiments aren't just demonstrations—they're tools for exploring how your own mind works. Each paradigm comes from decades of cognitive neuroscience research.
Run an experiment, see your results, and compare your performance against everyone else who has participated. The data updates in real-time.