Learn how nerves and blood vessels help produce water-induced fingertip wrinkles, and why their possible benefit for wet grip is still debated.

Discover how fluid-filled canals in the inner ear detect rotation, why the sensation can continue after you stop, and how balance connects to vision.

Discover how the brain predicts self-generated touch, why timing changes ticklishness, and what researchers still do not know about tickling.

Explore why a new situation can feel strangely familiar, how researchers study déjà vu, and why a feeling of prediction is not proof of foresight.