Mid-session check

Nausea 0–10?

Stay ≤5. Above 5 → stop this bout and rest (~15 min).

Tap a score

Optokinetic · practice

Horizontal lines + tracking dot

Black/white horizontal stripes scroll while a red dot bounces left ↔ right. Keep your head still and eyes on the dot unless your clinician says otherwise. Dot speed is seconds to cross the screen, so a 32″ ultrawide matches a laptop.

Duration (minutes) Stripe direction Stripe pairs / sec Stripe height (px) Dot: sec to cross Dot size (px) Mid-session nausea check-in (halfway)

Space pause · F fullscreen · Esc stop · HUD fades so it doesn’t compete with the stimulus.

Nausea gate ≤5/10. Mild “off” is expected; strong nausea is too much. Don’t train intoxicated. Not medical advice.

Session complete

Nice work

You finished the exercise.

Peak nausea this run:

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