non-invasive · EEG · shipping
Grael 4K PSG:EEG
By Compumedics
Identity
- Manufacturer
- Compumedics
- Model number
- —
- Codename
- —
- Aliases
- Compumedics Grael, Grael HD-PSG, Grael 4K
- Generation
- —
- Country of origin
- AU
- Released
- —
- Announced
- —
- Discontinued
- —
- Status
- shipping
Classification
- Invasiveness
- non-invasive
- Modalities
- EEG, EOG, EMG, ECG
- Primary modality
- EEG
- Direction
- read
- Categories
- clinical-grade, diagnostic
- Form factor
- scalp-cap, tabletop
- Use cases
- polysomnography, clinical EEG, ERP / evoked-potential recording
- Target users
- clinician, neurologist
Electrodes
- Total channels
- 60
- Recording channels
- 32
- Reference channels
- —
- Electrode type
- wet-gel
- Material
- —
- 10-20 positions
- —
- Requires gel
- Yes
- Requires saline
- —
- Prep time
- —
- Reusable
- Yes
- Disposable
- No
Auxiliary sensors
- IMU
- —
- IMU axes
- —
- Accelerometer
- —
- Gyroscope
- —
- Magnetometer
- —
- PPG (heart rate)
- —
- ECG
- Yes
- EMG
- Yes
- EOG
- Yes
- EDA / GSR
- —
- Temperature
- —
- Respiration
- Yes
- Microphone
- Yes
- Eye tracking
- —
Signal acquisition
- Sampling rate
- 4096 Hz
- ADC resolution
- 24 bit
- Notch filters
- —
- Onboard artifact rejection
- Yes
Stimulation
- Capable
- No
Connectivity
- Protocols
- usb-2, optical-fiber
- Bluetooth
- —
- Bluetooth profiles
- —
- Concurrent mode
- —
- Encryption (transit)
- —
- Pairing methods
- —
- Cloud sync
- —
- Offline recording
- Yes
Power
- Sources
- wired
- Battery life (active)
- —
- Charging port
- —
- Charging time
- —
- Battery replaceable
- —
- Notes
- —
Software & data
- Mobile app
- No
- Cloud platform
- —
- Offline mode
- Yes
- Subscription required
- —
- Raw data access
- Yes
- Export formats
- —
- LSL support
- —
- Data ownership
- user
- Apps
- Profusion EEG, Profusion Sleep
SDK & developer access
- Has SDK
- —
- Open source
- —
- Languages
- —
- Web Bluetooth
- —
- Raw sample access
- Yes
- BCI paradigms
- —
- 3rd-party integrations
- —
- Docs
- —
Regulatory & clinical
- FDA status
- 510k
- CE mark
- Yes
- Certifications
- CE Class IIa medical, FDA approved
- Prescription required
- Yes
- Pediatric approved
- —
Pricing & availability
- MSRP
- —
- Current price
- —
- Subscription
- —
- Warranty
- —
- Return policy (days)
- —
- Where to buy
- Buy at compumedics.com.auBuy at neurospec.com
Editor’s take
In favor
- 4 kHz / 24-bit clinical-grade EEG + PSG
- FDA / CE Class IIa cleared
- Profusion EEG/Sleep software ecosystem
Against
- Wet-gel cap setup
- Older Windows-only software stack
Sources & provenance
- Compumedics Neuroscan — Grael 4K product page
- Compumedics — Grael 4K PSG:EEG
- NEUROSPEC — Grael 4K distributor page
Last reviewed