EEG functionality

• Number of channels: (up to) 32
• Sampling rate: 500 SPS
• Bandwidth: 0 to 125 Hz (DC coupled)
• Resolution: 24 bits – 0,05 µV resolution
• Noise: < 1 µV RMS
• Common mode rejection ratio: -115 dB
• Input impedance: 1 GΩ

Stimulation functionality

• Number of channels: (up to) 32
• Sampling rate: 1000 SPS
• Stimulation types: tDCS, tACS and tRNS
• Customized waveform
• Frequency range: 0-250 Hz (tACS); 0-500 Hz (tRNS)
• Configurable bandpass filter for tRNS
• Maximum current per channel: ± 4mA
• Current accuracy: 1%
• Current resolution: 1 μA
• Current is configurable independently for each channel
• Configurable Ramp-up and Ramp-down times
• Voltage: ± 15 V per electrode (30 V potential difference)
• Sham and Double blind modes available

Stimulation safety:

• Max current per electrode: 2 mA
• Max total injected current (by all electrodes, any time): 4 mA
• Max duration per session: 1 hour
• Stimulation session must be pre-programmed
• Impedance check before and during stimulation
• Abort functionality: possible at anytime

NECBOX (Neuroelectrics Control Box)

• Battery: USB rechargeable Li-Ion battery
• Battery operating time: 8 hours (combined EEG/tCS)
• Data transmisstion: wireless (wi-fi network) or wired (USB cable)
• microSD card slot (for offline data storage)
• Output: EDF+, ASCII data files or TCP/IP raw data streaming
• Accelerometer data recording: tri-axial @ 100 SPS