The E4 wristband is a wearable research device that offers real-time physiological data acquisition and software for in-depth analysis and visualization. The E4 contains 4 sensors which measure and collect blood volume pulse, from which heart rate, heart rate variability, sympathetic nervous system arousal, motion based activity and skin temperature. In addition, we have the Embrace Plus device available for use.
As Empatic E4 is a legacy device, support is limited. Support for Embrace Plus is available.
Empatica E4 wristband for research & education
The Empatica E4 wristband can be used in experiments to study cardiovascular, stress, engagement or excitement responses and changes
Best practices
When handling the equipment, keep the following points in mind before using the Empatica E4 wristband for your research:
After reservation, the Empatica E4 wristband can be used both within or outside of our facilities. Within the lab, researchers and students may reserve the Flexperiment rooms or Recognice, depending on their needs of the experiment which they conduct. If the experiment needs to be done outside of the lab, the student or researcher can bring the wristband to the desired location.
Using Empatica E4 Applications The Empatica E4 wristband can be used with the web application, the mobile app and desktop application. Empatica Connect is a web application for storing, viewing and managing E4 data. Empatica Realtime is a mobile App that provides wireless streaming and visualization of real-time E4 data. Empatica Manager is a desktop application for managing the E4. Before use, you can create your Empatica Connect account, to ensure safe data collection, and download the manager to uploaded the recorded sessions which you will analyse.
Hygiene Protocol
Before switching between users, carefully clean all parts of the device that come in contact with the skin. The disinfection processes should include one or more of the following methods:
- Exposure to UV lamp.
- Cleansing with cotton soaked with a small quantity of ethyl or isopropyl alcohol.
- Cleansing with a solution containing Alkyl C12-16 Dimethylbenzyl Ammonium Chloride.
Do not use cleaning agents other than those described above without explicit written instructions from Empatica support.
Power off the device before cleansing. Make sure any residual cleaning solution has dried prior to powering on the E4 after cleansing.
Further support
Getting Started With The Empatica E4 Wristband
After receiving the Empatica E4 wristband, there are several steps you need to take to get started. You need to consider whether you would like to use the device in streaming mode, for real-time data viewing on a mobile device using Bluetooth, or recording mode, using its internal memory.
Download & install the E4 Manager and E4 Connect on your PC/ laptop. You can also download the E4 realtime app on your iOS or Android device from the App Store or Google Play.
Read the manuals and suggested links to learn how to set up and start using the wristband.
Manuals And External Links
Tutorials
FAQ
In case of a problem with an Empatica E4 Make sure the Empatica E4 is clean and properly fitted to your wrist. If the Empatica is still not working try this:
• Press the E4 button and keep it pressed for about 30 seconds
• Leave the device for about 5 minutes
• Then push the button for 1 second – at this point it should start working normally
• If it doesn’t, connect it to the charger and plug it to the computer
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When the E4 is powered off and disconnected from USB Short press – From the OFF state, a short pressure will not result in any output from the E4.
Standard press – Power on the E4. Press and hold the button until you see the green status LED switch on indicating that the E4 has entered Standby Mode. As soon as you see the light you can release the button and the normal pressure is completed. The green status LED will pulse while the device is in standby mode. While the E4 is in standby mode you can connect it to a mobile device to enter Streaming Mode (indicated by a blue LED light) or wait for ~60 seconds for the device to enter Recording Mode (indicated by a red LED light).
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When the E4 is powered on in Recording Mode During start-up – as the E4 enters recording mode the red LED will pulse for ~20 seconds before going dark.
Short Press – create an Event Mark. The red LED will come on for 1 second indicating the Event Mark has been recorded.
Standard Press – You can turn off the E4 with a standard press. As soon as you click the button the led turns on and then off after a second. As soon as the led is off you can release the button. The E4 now turned off.
Long Press – device reset. A successful “Reset” is indicated solid white
NOTE: After a reset, the device may need to be connected to USB to re-activate it.
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When the E4 is powered on in Streaming Mode During start-up – as the E4 enters recording mode the red LED will pulse for ~20 seconds before going dark.
Short Press – create an Event Mark. The red LED will come on for 1 second indicating the Event Mark has been recorded.
Standard Press – You can turn off the E4 with a standard press. As soon as you click the button the led turns on and then off after a second. As soon as the led is off you can release the button. The E4 now turned off.
Long Press – device reset. A successful “Reset” is indicated solid white
NOTE: After a reset, the device may need to be connected to USB to re-activate it.
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Flashing green and red indicates that the E4’s memory is full or the clock is unset preventing you from operating the device in Memory Mode. You can still connect to the E4 from the Empatica Real-time app on your smartphone/tablet.
Flashing green and yellow indicates that the E4 has a low battery and should be charged soon.
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Connecting E4 to Empatica Manager via the USB charging cradle – the device enters Standby Mode (green LED); if there is data in memory the data transfer will commence indicated by alternating yellow and purple LED lights.
The E4 may alternate flashing green and yellow after connecting it to a USB power source when attempting to transfer data. Charge the E4 for several minutes, disconnect, and reconnect to initiate the transfer of data.
Charging the E4 – The E4 can be charged by most powered USB connections (5V). When connected, the yellow LED light indicates that the E4 is charging. The yellow light stays on until the battery is charged.
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Want to use the Empatica E4 Wristband?
Go first through the steps on how to reserve Empatica E4 wristband or go directly to the equipment reservation page if you have already registered your project.
