Physiological sensors for use with g.tec and other data acquisition
systems
g.tec provides several sensors that allow to measure body
functions simultaneously to EEG, ECG, EMG and EOG signals. All sensors can
be combined with g.DAQsys for data acquisition and visualization and with
g.RTsys for real-time parameter extraction. Available sensors include:
galvanic skin response, respiration, pulse, snoring sounds and breathing
sounds.
 g.GSRsensor
Handheld
skin conductance sensor
g.GSRsensor is a handheld device to measure the galvanic skin response.
The device needs a 12 V DC power supply as provided by g.Power. The output
connector can be connected to any data acquisition board with an analog
input of ± 5 V. The recording Ag/AgCl electrodes must be fixed with a
velcro strap on 2 fingers.
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 g.RESPsensor
Piezoelectric
respiration sensor
The respiration sensor uses a
piezo element to measure the respiration effort. The sensor comes with
extension straps for different length and must be fixed around the chest.
The sensor does not need any power supply and can be connected directly to a
biosignal amplifier like g.BSamp. The 3 output connectors are standard
medical safety connectors with 1.5 mm. The sensor output range is below ±1
mV. 
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 g.PULSEsensor
Photoelectric
pulse sensor
The photoelectric pulse sensor can be fixed on the finger,
ear, forehead or animal tail. The device needs a 9 V standard block battery
as supply and must be connected to a biosignal amplifier like g.BSamp. The
sensor has 3 medical safety connectors with 1.5 mm as output.
Applications are pulse wave monitoring of humans or animals.
The output signal has a range of ± 50 mV. 
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 g.SNORINGsensor
Piezoelectric
snoring sensor
The small and lightweight piezo sensor is intended to detect
tracheal sounds. It is specifically designed to pick up the frequency range
of snoring and it creates clear and reliable tracings. The piezoelectric
sensor does not need any power supply and must be fixed with a tape on the
subject. The sensor has 3 medical safety connectors with 1.5 mm as output.
The output signal has a range of ± 600 µV and must be connected to a
biosignal amplifier like g.BSamp. 
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 g.BREATHINGsensor
Breathing
sounds microphone
The breathing sound microphone is intended to monitor sounds
generated by the passage of air through airways. Its small size allows the
placement on the neck. The sensor has 3 medical safety connectors with 1.5
mm and must be connected to a biosignal amplifier like g.BSamp. The output
range of the device is ± 5 mV. 
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