PhysioDex: Left or Right

Left hand or right hand? The question sounds simple. It stops being simple when you have
one second to look at a photograph and the clock is running.

PhysioDex takes the first phase of the Graded Motor Imagery programme and turns it into
six games that fit in a pocket. A round lasts a minute. No connection, no account, no
ads: everything happens on your phone, and nothing leaves it.

▸ SIX WAYS TO TRAIN

• Rapid Identification — as many hands as you can in 60 seconds.
• Countdown — ten seconds per question, not one more.
• Challenge Mode — count the left and right hands going past.
• Progression Mode — difficulty climbs, you have three lives.
• Inverted Mode — the instruction flips, and so must your reflex.
• Free Practice — no clock, at your own pace.

▸ REAL HANDS, REAL PHOTOGRAPHS

75 photographs: hands at rest, hands in action, hands holding objects, shot from every
angle. No schematic drawings — the images the brain actually has to work on.

▸ WHAT YOU SEE AFTER EVERY ROUND

Score, accuracy, average reaction time, best streak. Your progress is stored locally,
round after round, and you can erase all of it with one tap.

▸ A PAGE THAT EXPLAINS

Left/right discrimination is the first of the three phases described by G. L. Moseley in
the graded motor imagery protocols. The app explains where each exercise comes from and
what the literature says — including what it does not say. No promise of a cure: these
are exercises, not a treatment.

▸ BUILT FOR REAL USE

• Works on a plane, at the end of a hospital corridor, on the underground.
• No permissions requested. No data collected. No trackers.
• Sound and haptics adjustable, and switchable off.
• French and English.
• Portrait and landscape.

PhysioDex is the first of three PhysioComics apps. Phases 2 and 3 — explicit motor
imagery and mirror therapy — live in PhysioGMI.

Built by a physiotherapist, for people working on chronic pain alongside a healthcare
professional. This app does not replace a diagnosis, medical advice, or follow-up care.