FAQ

Is this a clinical diagnostic tool?

No. Neurology in Gradient Biotech is a research and exploratory analysis workspace. Outputs must not be used for clinical decision-making or neurological diagnosis. Interpretations include explicit research disclaimers.

Do I need MATLAB, SPM, or EEGLAB installed locally?

No. Upload files through the web UI and the platform handles analysis. Reference MATLAB toolboxes (BCT, CONN, EEGLAB) inform the underlying algorithms but you never need to run them yourself.

Graph metrics failed — what should I check?

Matrix is square and numeric
No NaN or Inf values
File format matches extension (CSV, NPZ, MAT)
Matrix is reasonably sized (very large matrices may take longer or time out)

Open the failed run's detail page for the specific error message.

NBS is disabled — why?

NBS requires:

At least two group labels assigned to connectivity matrix datasets
Multiple datasets per group (minimum depends on pipeline configuration)
Completed matrix uploads with valid dimensions across subjects

Assign groups on the Cohort analysis page first.

EEG features button is disabled — why?

Complete Preprocess EEG first. Features depend on the preprocessed recording artifact.

Interpret returns an error

Confirm a completed metrics run exists as input for the interpretation you're trying to generate. If the error persists, AI interpretation may not be enabled for your workspace — ask your administrator.

How do I compare patient vs control groups?

Upload connectivity matrices for all subjects
Open Cohort analysis and assign group labels
Run Batch graph metrics
Run NBS for edge-level differences
Use Compare cohort metrics for global graph measure comparison