CeMoQu (Cerebellum Motion Quantitative)

Digital biomarkers for ataxia. CeMoQu extends selected SARA subtests and lets patients perform objective self-assessments of motor and speech functions through a web-based system.

Live System

Access the live system here: https://cemoqu.com. No installation is required, all tests run directly in the browser.

Features

• Self-assessment tasks for ataxia and cerebellar disorders
• Quantitative metrics (reaction time, accuracy, smoothness, tremor, intelligibility)
• Browser-based, lightweight, cross-platform (PC & tablet)
• Optional JavaScript modules (browser/Node) for analysis and CSV aggregation
• Cloud-ready for secure, large-scale data storage

Repository Structure

CeMoQu/
├── index.html
├── LD/                                       # Line Drawing Test (SARA Test 6 Finger-to-Nose extension)
│   ├── cmq_LineDrawing.html
│   └── raw/
│       └── LD_P003_20251026_141523.json      # Raw trajectory or event log, format:MOD_PID_YYYYMMDD_HHMMSS.ext (LD_P003_20251026_141523.csv)
├── RT/                                       # Random Target Touch Test (SARA Test 5 Finger-to-Finger extension)
│   ├── cmq_RandomTarget.html
│   └── raw/
│       └── RT_P003_20251026_141455.csv       # Raw touch log
├── SD/                                       # Speech Disturbance Test (SARA Test 4 Speech extension)
│   ├── cmq_SpeechDisturbance.html
│   └── raw/
│       └── SD_P003_20251026_141700.wav       # Raw speech data
├── data/                                     # Aggregated / processed data for all modules
│   ├── csv/
│   │   ├── LD_P003_20251026.csv
│   │   ├── RT_P003_20251026.csv
│   │   └── SD_P003_20251026.csv
│   └── summary/
│       └── CeMoQu_aggregate_20251026.csv     # Optional combined summary
├── common/                                   # Shared utils (unit conversion, scoring, logging)
├── draft/                                    # Experimental / WIP code
├── LICENSE
└── README.md

Modules

• LD — Line Drawing (SARA Test 6 Finger-to-Nose extension)
  Path deviation, smoothness (CV), tremor (RMS)
• RT — Random Target Touch Test (SARA Test 5 Finger-to-Finger extension)
  Reaction time, accuracy, smoothness, tremor, distance→SARA(0–4) mapping
• SD — Speech Disturbance Test (SARA Test 4 Speech Disturbance extension)
  WER/CER, duration, intelligibility %
• common/ — Shared utilities for calibration, scoring, and logging
• draft/ — Experimental or early-stage code

Quick Start

For Users (Live System)

CeMoQu is fully developed and accessible online (No installations required).

1. Visit https://cemoqu.com
2. Select the desired assessment module
3. Follow the on-screen instructions

For Developers (Local Setup)

A) Browser-Based Tests

1. Open the corresponding .html file (e.g., SD/cmq_SpeechDisturbance.html)
2. Follow on-screen instructions
3. The output CSV will be saved under each module’s data/ folder

If your browser blocks saving: Run a local server using Node.js:

npx serve .

or

npx http-server -p 8000

Then open http://localhost:3000 or http://localhost:8000

B) Optional: Node.js Environment (for analysis or ASR)

Some modules (especially SD) can be extended with Node.js scripts for data analysis, file management, or ASR (Automatic Speech Recognition).

# 1. Verify Node.js installation
node -v
# (Recommended: v18 or higher)

# 2. Initialize project and install dependencies
npm init -y

# 3. Install required packages
npm install csv-writer csv-parser mathjs

# For speech analysis (optional):
# npm install openai whisper-speech or faster-whisper-js

# 4. (Optional) Install a lightweight static server for testing
npm install -g serve http-server