The Freedom 24D is a research grade dry wireless EEG headset designed for rapid application of 21 sensors at locations corresponding to the 10-20 International System. Its main features include: – Self-donned and ready to record EEG in under 5 minutes. Comfortable for wearing continuously over 8 hours. Portable design suitable for light ambulation in office or lab environment. 21 sensors positioned ac-cording to the 10-20 International System. Continuous impedance monitoring. BlueTooth wireless transmission with sampling at 300Hz. Hot-swappable Li-ion batteries allow continuous operation. 8-bit digital trigger input. Adjustable to fit a wide range of head sizes (54-62cm in circumference).
SPECS FREEDOM 24D
Sensor Locations Twenty (20) sensors at International 10/20 System locations:
Fp1, Fp2, Fz, F3, F4, F7, F8, Cz, C3, C4, T3, T4, T5, T6, P3, P4, O1, O2, M1 and M2
Common-Mode-Follower
One (1) Common Mode Follower sensor at Pz
Ground One (1) ground electrode at Fpz
Headset Easy to don, comfortable, and long-term wearable headset assembly with spring-loaded arms and pods for sensor support.
Good for long-term ambulatory use in office or laboratory environment
Amplifier/Digitizer
One (1) 24-channel amplifier and digitizer
Wireless BlueTooth
Run-time Continuous (hot swappable)
Headsize fit 52-62cm circumference (54-62cm optimal)
Headset weight ~600g
Wireless range: 10m
Digital Inputs: 8 bit input
Analog/Digital Converter: 16 bits
Analog/Digital resolution: 0.317 uV referred to input
Sample Rate: 256 Hz
Bandwidth: 0.003-150Hz
Gain: 60
Common mode rejection ratio: > 120dB
Channel Cross-talk: < -70dB with sensors Input Impedance (1Hz): 47Gohm Input bias current: <25pA DC offset tolerance: +/-200mV Maximum input range: 10mV pk-pk Noise (1-50Hz): <3 uV pk-pk * Specifications subject to change, please contact us to obtain latest specifications
Note:
The Freedom 24D is not a medical device, but a non-medical neurofeedback system for professional coaching and advanced home users. (Concentration training, relaxation training, neuroregulation training, etc.). It serves u.a. also the acquisition and analysis of psychophysiological data in science and research.
