Sensory Reweighting: Rebalancing Your Senses for Better Performance

I'll start with a very simple scene.
An athlete, standing. Nothing spectacular.
I ask him to lift one foot, eyes open. He holds effortlessly.

Then I ask him to close his eyes.

In less than a second, everything changes.
The micro-oscillations increase, the muscles wake up differently, the breathing changes.
Sometimes he wobbles. Sometimes he collapses.

And yet… we haven't added anything.
We've just removed the vision.

This small gesture is enough to reveal a fundamental principle of human performance: our senses never carry the same weight in our movement.

They adapt, compensate, and rebalance constantly.
That's what sensory reweighting is about.

When One Sense Falls Silent, the Others Reorganize

If you work with athletes, patients, or children, you've seen it before:

• Some collapse as soon as we close their eyes.

• Others become surprisingly more fluid in instability.

• Some compensate everything through vision, others through proprioception.

Every movement is a constant negotiation between vision, vestibular, and somatosensory systems.
A dynamic balance, never fixed, that changes according to:

1. the level of fatigue,

2. the emotional context,

3. the constraints of the environment,

4. the individual's motor history.

In other words: it's a sensory orchestration, not just muscles.

The Science Behind Sensory Reweighting

There is a strong consensus in the literature: the central nervous system constantly reallocates the "value" of each sense to stabilize movement.

Here are some key points from neuroscience (particularly from Enoka, Purves, research on the VOR and posture...):

1. Vision stabilizes, but it can inhibit the rest.

When the eyes are open, the brain naturally prioritizes vision as the main source of stability.
It's effective... but sometimes too dominant.
This is referred to as visual dependence.

2. Closing the eyes forces the brain to reallocate weight to somatosensory and vestibular senses.

It's an immediate reshuffle.
This awakens circuits that are sometimes “asleep”.

3. Instability increases proprioceptive accuracy.

The somatosensory system increases its sensitivity as soon as it loses visual or mechanical references.

4. The vestibular system becomes the