Introduction

AcqKnowledge is software used for recording physiological data using the BIOPAC system and can be used for further physiological data processing. 

General Information

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Availability, support and advice

AcqKnowledge is available for researchers at FSW Leiden and comes preinstalled on all lab computers (see the Lab PC Software List to check which version). The software can be installed on work computers through the Software Center. AcqKnowledge will also work on university laptops outside of the FSW building.

SOLO supports AcqKnowledge, although the research support team does not have experience with all its features. AcqKnowledge is mainly used for recording physiological data with BIOPAC hardware. For physiological data preprocessing/analysis, check out the PhysioData Toolbox, which provides a user-friendly interface for batch processing physiological data files.

Markers

To analyze physiological data obtained with Biopac, markers that signal the onset of certain events need to be sent from the stimulus presentation pc to the Biopac. In order to process these markers, a marker channel needs to be created in AcqKnowledge, see Marker channel for instructions on how to add such a marker channel. See for more information on sending markers the pages Sending Markers in E-Prime and Sending Markers in OpenSesame and the Markers and Events page for more information on markers in general.

Tips & Tricks

Getting Help

Watch this AcqKnowledge webinar for AcqKnowledge tips and tricks. Other useful BIOPAC webinars are available on the Biopac webinar webite, which is highly recommended to check out. Additionally, the Help menu in AcqKnowledge offers quick access to manuals and tutorials.

Preferences and View

Use the gear wheel in the AcqKnowledge toolbar to access the AcqKnowledge preferences. When you are not sure about the settings, leave them at their default, which works well for most studies.

Right clicking anywhere on the graph reveals a useful menu for editing the view of the graph windows. Options include:

• Autoscale single waveform and Autoscale waveforms
• Show all data
• Split view
• Channels (for hiding and showing channels)
  

Clicking on the axis on the right side of the graph reveals more options for viewing and scaling the graph windows, including:

• Scaling options
• Showing textual values on the graph (useful for marker and heart rate channels)
  

Network Data Transfer

When using Network Data Transfer it needs to be enabled in the AcqKnowledge Preferences, in the Networking section. Use the gear wheel to access the AcqKnowledge Preferences.

Note that Network Data Transfer needs to be enabled for each user! It cannot be saved in a template.

Linked Acquisition

Linked Acquisition allows you to record signals from multiple BIOPAC devices on one PC. Linked Acquisition can be set-up from the MP150/160 menu > Set Up Linked Acquisitions (becomes available when devices are attached to the PC, not available in picture below). Different synchronization methods are available and the data can be merged at the end of the recording when required. See this video for more information: Linked Acquisitions in AcqKnowledge.

Resources

• BIOPAC website
• BIOPAC webinars
• BIOPAC instruction videos
• AcqKnowledge Software Guide (latest version can also be downloaded here)
• AcqKnowledge Tutorial
• BIOPAC manuals