GSR Sensor
Galvanic Skin Response (GSR) Sensor
Overview
The PowerLab Sensors Galvanic Skin Response (GSR) Sensor is a galvanically isolated, skin conductance response amplifier with low constant-voltage AC excitation and software-controlled zeroing. The low level AC excitation reduces electrode polarization artifacts found in DC systems. It is supplied with a pair of MLT119F finger electrodes with Velcro™ attachment straps.
The GSR Sensor can be used in Lt and Lt LabStation. It plugs into the PowerLab T1 or straight into a Windows or macOS® laptop or desktop computer via USB connection.
Included with the GSR Sensor:
- MLT119F GSR Finger Electrodes (Snap Lead)
- Velcro® straps suitable for adults
Accessories purchased separately:
Key Features
- 50 Hz oscillator which supplies a near square wave, low-impedance, low-voltage (22 mVrms) signal to an electrode on one finger of the subject.
- Galvanic isolation for subject safety.
- Software-controlled zeroing
- Supplied with GSR Finger Electrodes and adult Velcro® straps
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Details and Tech Specs
Technical
Input
- Connection type: 2 × 4 mm (0.16") shrouded banana plugs to custom cable. Two dry, bright-plated, bipolar electrodes with Velcro™ attachment strap suitable for adult fingers.
- Excitation: Constant-voltage AC excitation (22 mVrms @50 Hz)
- Current density: ≤0.5 μA cm–2
- Isolation rating: 4000 V ACrms for 1 minute
- Amplification ranges: 0 to 50 μS
- Frequency response: –3 dB at 1 Hz
- Accuracy: ±1 %
- Input leakage current: <4 μArms at 240V, 50 Hz <4 μArms at 120V, 60 Hz
- Zeroing and offset: Software-controlled
Physical Configuration
- Weight: (including electrode lead): 200 g
- Operating temperature range: 5 to 35 °C, 0 to 90% humidity (noncondensing)
ADInstruments reserves the right to alter these specifications at any time.
