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Inside the Signal

One movement signal at a time: what it measures, how it is computed, where it holds and where it breaks.

2 stories · newest last

01
Two gait cycles, left and right, drawn as bars of stance and swing, with the right side drifting out of alignment.
Inside the Signal · 01Sep 16, 2026Movement intelligence
What Does Gait Symmetry Actually Mean?
GaitAI Research
Symmetry compares the left side of a walk with the right — but stance, swing and step timing can each be asymmetric on their own, nobody is perfectly symmetric, and what a change means depends on the baseline it is read against.
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02
A population distribution beside one person's repeated observations forming their own narrow band, with the same latest reading marked against each.
Inside the Signal · 02Oct 14, 2026Mobility
What Is a Personal Movement Baseline?
GaitAI Research
A population reference says where a person sits among strangers; a personal baseline says whether they have changed. What a baseline is made of, how many observations it needs, when it moves, and what it can and cannot say.
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