SuperVision Usage Guide

Ensuring Good Signal

Preparation

In order to have successful data collection there needs to be good contact with the sensors. Some tips on best to achieve this can be found here.

The EMG sensors

The mask, shown below this list, contains 7 electromyographic (EMG) sensors. These namely are:

  • Frontalis: Left and right side of the forehead
  • Orbicularis: Left and right side of the eyes.
  • Zygomaticus: Left and right side of the cheeks.
  • Corrugator: Measures the corrugator and procerus in the midline.

Sensor locations on mask

Image of the Emteq insert with the different sensors highlighted, showing the frontalis (in red), the orbicularis (in green), the zygomaticus (in blue) and the corrugator (in purple).

Sensor locations on face

Image demonstrating sensor location, with colours corresponding to the above image.

The zygomaticus and orbicularis sensors are part of adjustable sides which can be inserted into the mask. Ensuring the right size-side insert for your face will greatly improve the sensor signal.

The orbicularis sensors should be placed as close to the end of the eye as possible, as long as they are not affecting normal eye movements or comfort. Note, on some faces using the wide inserts may mean the orbicularis sensors placed further away from the eye and thus give weaker signal.

Problems with sensor contact

The SuperVision app uses a traffic light system to help provide a quick indication of sensor contact. The mask icon displayed in the application shows sensors in three different states: grey (no connection), orange (bad connection) and green (good connection). If you are struggling to find a good connection with the sensors after readjusting you can do a few things to help.

After you fit the device, try leaving it on the face for a brief period of time before starting any data collection. We recommend 15-20 seconds. This duration may vary depending on the conditions of the recording. After this step, check the mask diagram on the SuperVision app, if all sensors are green then you have good contact. Generally sensor conductivity may improve over time.

SuperVision sensor contact status

If any sensors are orange it means they are struggling to maintain a strong connection to the skin and the mask needs adjusting. Once all sensors are fully in contact with the skin they will remain solid green.

Green sensors indicate good connection with the skin.

Orange sensors indicate low/poor skin contact.

Grey sensors indicate no contact with the skin.

See all possible colour indications in the above image.

To achieve stable contact with the skin, try repositioning the device, tightening the head strap, or changing the sensor inserts (wide or narrow inserts for the eye sensors).

It is important to ensure all sensors have good contact with the skin before recording any data.

Please check the sensor placement (see The EMG Sensors). If any of the sensors are still not green please try the following steps:

  • try lowing the device slightly, to avoid the sensors being placed on the curvature before the hair line. Different face shapes and may need extra attention for the brow sensor set up.
  • Remove any hair or products that might be trapped under the sensor in that area. You can use alcohol swabs to clean the area under the sensor and the sensors themselves. For researchers, it is advisable that all participants cleanse the skin beforehand.
  • To minimise electric potential interference, move to an area which has less electrical cables (e.g., laptop chargers, multi-plugs). You can also try switching off additional monitors or other devices in close proximity. The effect should be instantly visible on the streaming impedance signals on the Terminal app.
  • Press the device slightly against the skin as this sometimes creates long-lasting contact between the skin and sensors. Contact Status poor vs good
    The tab at the top indicates the status contact.

If any sensors are not touching or showing as orange, the tab will say ‘contact status poor' and the mask needs readjusting. Once all sensors have good contact with the skin, the tab will show as ‘status good', then you are able to continue with data collection.

Using SuperVision

When monitoring active recording sessions this is the main display you will use for reading the real-time data. It contains information on all sensors organised into graphs which can be customised to fit your needs.

Mask Fit

Once connected to the emteqPRO device, you will see live signals coming through from each of the sensors. Mask Fit

Sensor Fit State show at all times in the top left corner and links to a larger view of the mask.

Sensor Graphs

To see the signals, click the second tab on the left with the graph icon. Graph Tab

The Graph Icon takes you to the signal view. In this example a user smiled 4 times which is visible on the activation of the left and right zygomaticus EMG sensors.

You are able to view EMG, PPG, IMU accelerometer, magnetometer, gyroscope and HR in beats per minute (BPM), the graphs are shown below. EMG Graph

On the right of each graph you are able to select the channels you want to view and relocate the graphs position on the screen.

On each graph you are able to select which channels you want to view and the position of the graph on the screen. PPG Graph

The signal view contain all sensors real-time readings. You also manually select and configure the graphing properties.

You are also able to edit the graphs using the configure button in the top right corner. This feature allows you to select which channels you want to view, change the amplitude range and apply filters to the signals. Configuration Button

The configure tab allows you to select which channels you want to view, the filter you want to use on the signal and the amplitude range of the graph.
Tip

To improve performance on a lower end machine it is recommended to disable any graph sensor data you are not currently using, for example IMU or Magnetometer.

Event Markers

There is also a graph for viewing the event markers the user is experiencing in real time. These events are triggered from the emteqVR SDK app, but can also be triggered from SuperVision such as session recording below. Event Markers

Real-time event-markers can be used to annotate important moments during the data-collection.

Session Recording

Additionally, you are able to carry out live recordings using the record feature. Pressing start opens up a session management tab allowing you to enter some key features about the data collection. This recording will be saved within Documents on the Users PC, for example C:\Users\[user name]\Documents\EmteqLabs\[application name]\Upload. Record Session

Record Session popup to store participant information into recording sessions.

Connection

The connection icon on the top right of the SuperVision shows the connection with the emteqPRO Mask. If connection is lost, and the mask is not recognised by the SuperVision, then the icon will turn from blue to red, as shown here. Mask Connection Status

Connection icon showing when the mask has disconnected.

Data Insights

The Data Insights section allows you to upload your data to the cloud where the data to be processed and returned as a batch of standard CSV files in a compressed zip format. You can access the Data Insights section at any time from the tab on the left of the SuperVision app, even when not connected to the mask.

Data Insights Tab

Once you open the Data Insights section you will be greeted with the option to upload new insights at the top, along with a list of the uploads you have made from the current computer.

Note

This functionality is not available to ‘guests’. Users must be logged in to be able to access upload previous uploads and create new ones. If you are not logged in click on the ‘guest’ button the bottom left of the window. Uploaded files are also only accessible from the same computer they were uploaded from currently.

Uploading New Insights

  • Begin by clicking File Upload icon on the left and then [New Insight] button highlighted in the image below. New Upload
  • Specific insight algorithms, and versions of each insight algorithm can be selected prior to upload.
    • These selections will impact the content of the returned zip file once processed.
  • Following the instructions provided on screen select the .json and .dab file you wish to upload into the corresponding fields using the [Browse] buttons. Data Insights Upload Screen
  • Once you have selected your files click the [Start Upload] button to begin uploading the files selected. Upload In Progress
  • Once the upload completed you will be returned to the catalogue screen showing all of your uploads along with their status. Upload In Progress
  • Depending on the size of the data files you uploaded the time taken to process them will vary.
  • Once completed a [download] button will allow you to retrieve the zipped .csv file(s).

The CSV Specification is available to help you understand the data shown in this files.

Upload Status

Each item you upload will have a status:

  • pending - The upload has been received and is being processed.
  • complete - The upload has been successfully processed and a corresponding [download] button will allow you to retrieve the zipped CSV file(s).
  • failed - In the event the files are not processed these will be shown as ‘failed', please contact support for assistance.

Remote Viewer

You can also view a video stream of what the participant sees within the application. This includes audio from the Unity App along with the ability view the video in a floating window.

Using the Remote Viewer Service

Note

You must first connect the SuperVision and Unity apps with sensor data streaming to the SuperVision app (i.e. graph data displayed) before starting the Remote Viewer Service. This enables an automatic connection to the video stream once you start the service.

  • Assuming you are already running both Unity Application with Core Services and the SuperVision app you can start by selecting the Remote Viewing tab on the left. Remote Viewer
  • Click on [Start Service] to being streaming.
  • Once the SuperVision app is running you should see the video stream appear in the top left. Remote Viewer Pop-out
  • You can use the controls below the video thumbnail to: Close, Mute/Unmute, Pop-out and Full Screen the video stream.
  • Once in a separate window the stream can be resized and moved as you wish, the controls for audio remain in the left hand navigation of the main SuperVision window unless running in full screen mode.
  • If you are having issues with the stream or are seeing a black screen you can [Restart Viewing Service] to resolve the issue.
  • The [Configure] option allows you to view the currently active port used for stream or make changes based on your network requirements. Remote Viewer Configuration
  • Clicking on [Edit Port] will expand this section, here you can: Reset to default (port 8085) Auto Scan or enter a manual port number, required to be between 8000-9000.
  • Clicking on [Auto Scan] will open a new pop-up window with the option to scan for available port within the range listed above. Remote Viewer Port Scan