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EDA stands for Electrodermal Activity whereas SCR stands for Skin Conductance Response
From the AcqKnowledge home screen select: Open a graph file, Graph file on Disk, and click OK
1. This will allow you to access files directly from the U: Drive
Minimize all channels except the Channel 10 that corresponds to EDA by clicking on the triangle icon on the left hand slide of the channel number.
Access the EDAPreference menu by going to Analysis→ Electrodermal Activity→ Preferences... & enter the following settings:
2. Click OK
3. Note: we can choose to Reject SCRs under 0% of max (Review Analysis Menu)
Add a Dual Row x 3 to toolbar by clicking on the Pre-Set menu icon (triangle facing down)
2. Change Min, Max, & Mean values to None
Go to Analysis→
Electrodermal Activity→ and select "Derive Phasic EDA from Tonic" option from the menu
2. Scroll down and select Channel 10 to indicate the correct EDA (SCL) signal
The Tonic EDA signal (Channel 10) is now accompanied by a Phasic signal (blue) providing precise information on time-based changes in EDA
Go to Analysis→
Electrodermal Activity→ and select "Locate SCRs" from the menu
From the Locate SCRs menu, select Channel 10 as the Tonic EDA channel and select the Phasic EDA channel (Channel 7 in this example) under the Use Channel Option
SCRs are now displayed on the Tonic Channel
2. Zoom into a small section of the signal by selecting the magnifying glass from the toolbar
  1. Hold and drag region you would like to zoom into in EDA channel
  2. 1. Open- brackets indicate: SCR onset
    2. Water-droplet indicate: Peak SCR response
    3. Closed bracket: SCR offset/ end of SCR
    4. Blue Droplet: an SCR that is significant from its background but not tired totied to a specific stimulus; referred to as a Non-specific-SCR (NS-SCR)
    5. Red Droplet: Event-Related SCR
Determine measurements you'd like to capture: Mean Amplitude of Events (Evt ampl), number of Events, Event-Related EDA analysis

Versions Compared

Old Version 5

New Version 6

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