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NEULOG GALVANIC SKIN RESPONSE SENSOR GUIDE
NeuLog galvanic skin response sensor
NUL-217 Carolina # 369646
The NeuLog GSR sensor can be used for any science experiment or activity which
utilizes the natural galvanic skin response (skin conductance) in the fields of biology,
physiology, psychology, etc.
Galvanic skin response, or skin conductance, is a measure of the changes in the
skin’s conductivity due to a stimulus, whether it is a picture, smell, sound, touch, etc.
Sweat glands are controlled by the sympathetic nervous system which release small
amounts of sweat when a stimulus is sensed. This is how the GSR sensor can relate
psycho-activity to sweat gland activity.
The sensor comes pre-calibrated so you can start experimentation right out of the box
using any of the following guides.
Just a few of the thousands of possible experimental subjects that can be done with
the NUL-217 sensors are: physiological and psychological relationships and
responses to stimuli, human biology demonstrations, lie detection, and many more.
The GSR sensor uses the following units of measure:
Micro siemens (µS): A unit measuring electrical conductance.
Arbitrary analog units (Arb): An arbitrary unit to demonstrate waves,
frequencies, and periods.
Connecting to the GSR sensor:
The GSR sensor needs to form a strong connection to the skin in order to work
properly. Attached are two probes with Velcro finger connectors. While conducting
experiments, remain as still as possible for the best results.
1. Wrap the Velcro connectors around two different fingers on the same hand,
securing as tightly as possible without causing discomfort.
2. For best results, ensure the flat metal piece on each Velcro connector is
located on the underside of each finger.
3. Attach both the white and the black snap connectors (located on the end of
the wire) to the Velcro finger connector by snapping to the exposed metal
nub..
4. You are now properly connected to the GSR sensor.
Quick start procedure:
PC or Mac Computer
Materials needed:
NUL-217 GSR Sensor
USB-200 USB Module
A USB to mini USB cable (which comes with the USB-200)
Your GSR sensor needs to be connected to a USB-200 module. The USB-200
module then connects to a computer via a USB to mini-USB cable. Please note that
you cannot plug the GSR sensor directly into a computer.
Resident PC software and browser based software can be downloaded for free at
www.NeuLog.com/dowload as well as a full software user guide. Note: Make sure not
to download and install both types of software, they will conflict on the computer.
Procedure:
1. Install the NeuLog software
2. Connect the USB-200 module to the PC or Mac
3. Connect the GSR sensor to the USB-200 module (they directly plug
together). Please note there is no calibration required for this sensor.
4. Open the NeuLog software.
5. Once a GSR sensor logo appears on the left side of the screen the probe
has been automatically identified and you can begin experimentation.
6. If the GSR sensor is not automatically identified then click the “Search for
sensors” icon to find the sensor.
7. Select the “On-line experiment” button; this will open a graph below.
8. Click on the “Module setup” button located on the GSR sensor icon in the
module window to change the sensor settings if need be.
9. Click on the experiment set up button to change the experiment settings if
need be (experiment duration for example).
10. The GSR sensor will give a live reading in the box to the left of the screen
while plugged in.
11. To run an experiment and collect data click “Run experiment”.
12. To end data collection early, click “Stop experiment”.
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NEULOG GALVANIC SKIN RESPONSE SENSOR GUIDE
Tablet, smart phone device
Materials needed:
NUL-217 GSR Sensor
WIFI-201 WIFI module
BAT-200 Battery
Your GSR sensor needs to be connected to a WIFI-201 module. The WIFI-201
module will create a closed NeuLog wifi network which will stream the NeuLog data to
a device of your choosing. Once your device is wirelessly connected to the NeuLog
network you can run experiments and collect data through a browser of your choosing.
Procedure:
1. Connect the GSR sensor directly to the left side of a WIFI-201 module (no
wires required).
2. Connect a BAT-200 module to the right side of the WIFI-201 module.
3. Although not required, we recommend plugging the BAT-200 to an outlet
using a USB to micro USB charger (such as a typical cell phone charger).
The WIFI-201 module will run for 15-75 minutes (depending on the sensor)
without being plugged in.
4. For further WIFI-201 instructions or the WIFI-201 quick start guide please
visit www.NeuLog.com/download.
5. The WIFI-201 indicator lights will flash; take no action until the LED to the
far left turns blue.
6. Take your tablet or smart phone and go to the Wi-Fi settings and select the
NeuLog network which matches the WIFI module ID found on the back of
the WIFI-201 device. (NeuLogXXXX for example)
7. Give your device 1-2 minutes to connect to the WIFI-201 network.
8. Once the device is connected go to your browser and type in the website
wifi201.com into the URL bar, then wait for 30-60 seconds.
9. You will see a “Control mode” icon in the browser, click on this icon.
10. The browser will then load a new screen and begin to auto detect the
sensors, this can take a few minutes.
11. If the browser does not auto detect, select “Search for sensors”
12. Once the sensor is found you will see an icon on the left side of the screen
for the GSR sensor. The icon will display data in real time.
13. To set the GSR sensor’s settings click on “Module setup” button located on
the GSR sensor icon on the left side of your screen.
14. To change the experimental settings click the “Experiment setup” button
(experiment duration for example).
15. To run an experiment and collect data either click “Run experiment”.
Operation with NeuLog viewer
Materials needed:
NUL-217 GSR Sensor
VIEW-101 Viewing Module
BAT-200 Battery
Procedure:
1. Connect the GSR sensor to the left side of the viewer.
2. Connect the BAT-200 module to the right side of the viewer.
3. The VIEW-101 will auto detect the sensor and you will see it appear on the
left side of the screen.
4. Once the sensor appears it will be monitoring data in real time.
5. To run an experiment and collect data click the run button (little green
person).
Off-line experiments
(Off-line experiments are for when you do not have a sensor connected directly to a
computer, tablet, smartphone, or NeuLog viewer).
Materials needed:
NUL-217 GSR Sensor
BAT-200 Battery
Materials needed to configure your offline experiment:
USB-200 USB Module or WIFI-201 WIFI module or VIEW-101 Viewing Module
A USB to mini USB cable (which comes with the USB-200)
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NEULOG GALVANIC SKIN RESPONSE SENSOR GUIDE
Sensor specifications
µS
Arbitrary analog
units
Range and
operation modes
0 to 10
0 to 65279
ADC resolution
16 bit
Resolution
10 nS
Max sample rate
(S/sec)
100
Procedure:
1. Connect the GSR sensor directly to the left side of a charged BAT-200
module.
2. When ready to collect data press the “Start/Stop” button on the GSR sensor,
a red light will turn on for the duration of the experiment.
3. To change the experiment settings first connect to your chosen device (PC,
Mac, tablet, smart device) and select the “Module setup” button. (For more
information on how to change the experiment settings view quick start
procedure section for your chosen device in this document.)
4. After the experiment has concluded (when the “Start/Stop” button is pressed
again or the data collection period ends) connect the sensor to your chosen
device. (full instructions in each device’s quick start procedure section)
5. Open NeuLog software.
6. Click the “Off-line experiment” button.
7. Click the “Load data from sensors” button.
8. Select which experimental data to upload. (5 experimental runs can be
stored at one time on the NUL-217 GSR sensor)
Restoring sensor’s factory default settings:
Procedure:
1. Connect the USB-200 to a PC, Mac, tablet, or smart device.
2. Connect the GSR sensor to a USB-200 module (they directly plug together).
Please note there is no calibration required for this sensor.
3. Open the NeuLog software.
4. Click the “Tools” icon.
5. Click “Restore sensor’s factory defaults” icon.
6. If prompted to clear the graph, click either the “Off-line either” or “On-line
experiment” (whichever you are using).
7. Click “Clear experiment results”.
8. Resume from step 4.
Included with sensor:
NeuLog NUL-217 GSR sensor guide (this document).
GSR probes (power and ground) attached by durable rubber-coated wires.
Two white Velcro finger connectors.
Sensor features:
Fully digital data.
Rugged plastic ergonomic case.
Push button switch for Start/Stop experiments in off line mode.
LED indicator of experiment status (blinks while collecting data).
Pre-calibrated sensing equipment.
GSR probes (power and ground) connected to the sensor body by durable
rubber-coated wires.
Note: NeuLog products are intended for educational use.
Videos and experiment examples:
Videos, literature and other probes can be found at www.NeuLog.com
http://www.NeuLog.com/Products/GSRloggerSensor.aspx
Emotional Stress Measurement –
http://www.neulog.com/Portals/3/Users/Experiment B-37 Emotional stress
measurement Ver 3.2.5.pdf
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NEULOG GALVANIC SKIN RESPONSE SENSOR GUIDE
Technical background:
The philosophy behind NeuLog’s plug and play technology is based on each sensor’s
ability to store its own data due to an internal flash memory chip and micro-controller
in each plastic NeuLog body. This technology allows the sensor to collect and then
store the digital data in the correct scientific units (oC, oF, Lux, %, ppm, for example).
The sensor is pre-calibrated at the factory. The built-in software in the logger can be
upgraded for free at any time using the provided firmware update.
The GSR sensor uses an internal voltmeter to detect micro changes in the skins
resistance and conductivity. When a stimulus is sensed, the sympathetic nervous
system reacts causing many physiological changes including releasing miniscule
amounts of sweat from sweat glands. These small changes of the skin’s moisture
allows for an electrical current to pass through both skin and tissue more easily.
Maintenance and storage:
Never submerge the NeuLog plastic body in any liquid.
Do not allow liquid into either the GSR sensor or probes.
Wash hands prior to use for best results.
After use, gently wipe away any foreign material from the GSR sensor.
Store in a box at room temperature out of direct sunlight.
Warranty:
We promise to deliver our sensor free of defects in materials and workmanship for a
period of 3 years from the date of purchase. Our warranty does not cover damage of
the product caused by improper use, abuse, or incorrect storage. Sensors with a shelf
life such as ion selective proves have a warranty of 1 year. Should you need to act
upon the warranty please contact your distributor. Your sensor will be repaired or
replaced.
Thank you for using NeuLog!
Flexible, simple, fast, forward thinking.
W: www.neulog.com
E: info@neulog.com
A: 850 St Paul Street, Suite 15, Rochester, NY 14605
P: 1.866.553.8536
V04302013
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