The brain never sees reality, it reads a map

One word comes up often when we talk about the sensorimotor loop: the map. We speak of a false map, an incomplete map, without always saying what it means for a brain to work with one. Yet it may be the most important thing to understand in RNP, Neuro-Postural Reprogramming, because the brain never has direct access to reality.

Results that fluctuate for no reason

Many professionals know this situation without being able to name it: a client who does the work, really does it, and whose results fluctuate with no apparent logic. One week it's there, the next you feel like you're starting over, with neither fatigue nor stress explaining anything.

The work stays constant, the system's response varies, and something fluctuates in the background that the usual variables do not capture.

The brain acts on its representation

The brain perceives the world through sensors that send it signals, and from those signals it builds the best possible model of what is happening. That model is the map, and the brain acts on its representation of reality far more than on reality itself (the internal map).

Think of a navigator whose compass is off by three degrees. He is competent, attentive, and yet every trip drifts, because the instrument feeding his decisions is wrong. You can train him endlessly: as long as the compass is not recalibrated, the drift continues.

The inner ear, vision and the sensations of the body are these instruments (the vestibular system, the somatosensory system). If one of them sends imprecise signals, the movement produced from this map will be distorted, out of faithfulness to an incorrect representation far more than out of clumsiness.

Recalibrating the map

This is what the training shows concretely. When a professional understands that they can recalibrate the instruments that build their client's map, without changing what the client does, something shifts: the movement sometimes corrects itself without anyone touching it, because the signal was the problem, and it becomes the solution.

It is also what explains why the same exercise gives such different effects from one day to the next: it lands on a map that has itself moved (mechanoreceptors, the hidden GPS of movement).

When you work on movement, you correct the result. When you work on the map, you correct the source.

To test one of the map's instruments yourself, the vestibular guide is free, and the introduction to RNP sets out the complete framework.

You are a movement professional: discover the training. You want to take stock of your own sensory map: request an assessment.