Enobio

Enobio is a wearable, modular and wireless electrophysiology sensor system for the recording of

  • EEG (Electroencephalogram - brain activity)
  • ECG (Electrocardiogram - heart activity) and
  • EOG (Electrooculogram - eye movement). Application areas include research, biometry, Brain–computer interface, vigilance monitoring and biofeedback for virtual reality.[1]

Enobio was developed by the Spanish company Starlab and was released in June 2009[citation needed].

Technical specifications

Features
Number of Channels 4 Input Biopotentials (EEG, ECG, EMG)
Output Digital streaming over TCP/IP.
Raw data files- ASCII output and EDF compliant.
Sampling 16 bit sampling at 250 S/s
Bandpass 0 to 50Hz DC Offset Automatic offset compensation for each channel
Wireless communication IEEE802.15.4 PHY Data rate Up to 128000 bit/s
Dimensions 660x550x250 mm Weight 65 g
Operating time 4 hours four channels at maximum sampling rate Charging time 1 hour
Operation range -40°C to +125°C
Analog
Analog Channel gain 70 CMRR 96 dB
Input Referred Noise 32 nV/√Hz (<10µVrms 0.1-100Hz for electrode) Low Frequency Noise 0.3 µV p-p (f = 0.1 Hz to 10 Hz)
EMI filter 40 kHz Anti-aliasing filter 30Hz
Input Voltage Range 0.5 V to 1.6 V Maximum Range Input Voltage -0.3 V to 3.0 V
Digital
Quantisation [bits] 16 SAR ADC No Missing Codes 15 bits typical
Resolution 700nV Dynamic Range 150dB
Signal-to-Noise Ratio 83 dB min Sampling rate [Hz] Up to 250S/s - 4 channel
Power
Enobio Interface (electrode) ≈6 mW ENOBIO SCM ≈20 mW four channel full rate
Battery Rechargeable Lithium Polymer Battery Capacity 610mAh
Nominal Voltage Rechargeable Lithium Polymer Charger 100-240V, 50/60Hz
Charging Cycles >500
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Last modified on 24 April 2013, at 17:56