Ring GSR/BVP
The Ring GSR/BVP is an ultralight wearable biosensing device designed for real-time measurement of electrodermal activity (EDA/GSR) and blood volume pulse (BVP). Its ergonomic ring-style design provides comfortable, stable placement on the fingers, making it suitable for research in psychology, neuroscience, human-computer interaction, and affective computing.
Key Features
- Dual physiological sensing
- GSR/EDA (Galvanic Skin Response): Measures changes in skin conductance associated with sympathetic nervous system activity.
- BVP (Blood Volume Pulse): Measures blood flow changes using optical photoplethysmography (PPG), enabling heart rate analysis.
- Integrated Motion Tracking
- Built-in 3-axis accelerometer (ACC) detects hand movement.
- Helps estimate and compensate for motion artifacts.
- Improves signal quality during dynamic activities.
- Wireless Operation
- Bluetooth connectivity for real-time data streaming.
- Local backup recording via integrated microSD storage.
- Compact and Ultralight
- Comfortable for extended recording sessions.
- Suitable for both laboratory and real-world environments.
Technical Specifications
Hardware
| Feature | Description |
|---|---|
| Sensors | GSR, BVP, and 3-axis accelerometer |
| Wireless Amplifier | Compact, lightweight integrated amplifier |
| Data Streaming | Bluetooth wireless transmission |
| Backup Storage | microSD card recording |
| Motion Sensor | 3-axis accelerometer for artifact estimation |
| Power | Rechargeable battery |
| Form Factor | Finger-worn wearable ring |
Sensor Layout
The Ring positions its sensors on the fingers for optimal physiological signal acquisition:
- GSR electrodes: Contact the first and second finger phalanges.
- BVP optical sensor: Measures blood volume changes from the finger.
- Accelerometer: Continuously records movement to assist with motion artifact detection and removal.
Included Accessories
The package includes:
- Ring GSR/BVP device
- 8 GB Class-10 microSD card
- SD card adapter
- USB Type-A to Micro-USB cable
Software
Bitbrain Core Research Software (Included)
The device includes SennsLite for:
- Raw physiological data acquisition
- Live signal visualization
- Lab Streaming Layer (LSL) compatibility
- Synchronization with other Bitbrain devices
- CSV data export for offline analysis
Optional Software
- Bitbrain Extended Research Tools (licensed)
- Advanced research features and multimodal experiment support
Applications
The Ring GSR/BVP is widely used in:
- Emotion recognition
- Stress monitoring
- Human-computer interaction (HCI)
- User experience (UX) research
- Cognitive workload assessment
- Neuroergonomics
- Biofeedback training
- Psychophysiology research
- Virtual Reality (VR) and Augmented Reality (AR) studies
- Multimodal neuroscience experiments
Advantages
- Accurate GSR and BVP measurements
- Comfortable finger-worn design
- Self-positioning in just a few minutes
- Wireless real-time monitoring
- Integrated motion compensation
- Reliable onboard microSD backup
- Easy synchronization with EEG and other Bitbrain devices
- Suitable for both controlled laboratory studies and mobile research
Overall, the Ring GSR/BVP combines electrodermal activity (EDA/GSR), blood volume pulse (BVP), and motion sensing in a lightweight wearable platform, delivering high-quality physiological data for research applications requiring reliable, synchronized, and mobile biosignal acquisition.
