Biomarkersv1
Neurological Panel
The neurological panel reads motor control, timing, and prosody from speech — the acoustic correlates of conditions like Parkinson's, early cognitive decline, and post-stroke change. It is most informative on a read passage or short spontaneous response, where planning and articulation are both exercised.
Features
Returned raw under panels.neurological.features and folded into the panel score.
| Feature | Meaning |
|---|---|
| jitter | Cycle-to-cycle frequency perturbation. Rises with impaired motor control of the vocal folds. |
| artic_rate | Articulation rate (syllables/s, excluding pauses). Slows with bradykinesia and cognitive load. |
| pause_ratio | Fraction of speech spent in silent pauses. Lengthens with word-finding and planning difficulty. |
| f0_range | Pitch range across the utterance. Narrows with monotonic, reduced-prosody speech. |
| voice_onset | Latency to phonation after a prompt. Extends with processing-speed decline. |
Best elicitation
Pass task: "read_passage" for a controlled sample, or task: "spontaneous" to capture planning and word-finding. Consistent prompts across visits keep the baseline tight.
Longitudinal by design
Neurological change is gradual, so this panel is most powerful over time. Chart baseline_z from List Analyses to see the moment a patient begins trending away from their own norm.