Synchronizing SightLab’s Session Replay with BIOPAC Acqknowledge

‍

‍

Starting with SightLab 2.6 and AcqKnowledge 6.02, you can fully synchronize AcqKnowledge’s playback graph with SightLab’s replay visualizations.

To use this feature:

First in Acqknowledge, go to Display - Preferences and make sure "SightLab Communication" and NDT are checked on. Click "Enable Communication" to toggle on this feature.

‍

‍

To have a synchronized Biopac and SightLab session, first enable Biopac either in the GUI or in code and run your session.

Enabling BIOPAC Integration in SightLab

GUI Version

You can send markers to Acqknowledge with the GUI version by using a checkbox.

‍

‍

Non-GUI Version

Set sl.SightLab(biopac=True) in the main SightLab instance.

This will send markers to Acqknowledge when you fixate on objects, including the name of the object. After a session, events will appear on the timeline alongside physiological data.
‍

Replaying the Synchronized Session

Open AcqKnowledge and load the graph file recorded from the same session you are replaying in SightLab.
In SightLab’s Replay interface, click “Connect BIOPAC” to establish the connection to AcqKnowledge
Click “Attach Graph” to link SightLab to the first graph displayed on the left-most tab in AcqKnowledge.
‍

‍

Once attached, you can control playback in either application:

Drag the slider to scrub through the timeline.
Use keyboard shortcuts:
B / N — Step backward / forward by one frame
C / V — Jump backward / forward in larger increments

You can also adjust what is displayed using SightLab’s replay visualization tools - sliders, toggles, and visibility controls for gaze paths, fixations, dwell spheres, and more. This allows you to seamlessly inspect physiological signals and VR behavior data together, frame-aligned.

‍

‍

For more information on integrations between SightLab and BIOPAC see this page.

To request a demo of SightLab click here.