Peak Analysis Module for LabChart

General Information

The MLS380/6 Peak Analysis Module for Windows provides automatic detection and analysis of multiple, but not overlapping, signal peaks in acquired waveforms. The module can be used either offline, to analyze peaks in existing recordings, or online, to analyze peaks as they are being recorded.

The Peak Analysis Module should be used with the latest version of LabChart. Click here for the latest LabChart Update for Windows.

Electrogram and aortic flow recording from a dog, analyzed with General Waveform detector settings.

Wide Range of Applications

The module can be used in a wide range of applications including isolated tissue studies, hemodynamic measurements, amperometry, cardiac physiology, neurophysiology and current measurements.

Features and Benefits:

• Reduces the amount of time required to analyze and extract parameters from multiple peaks
• Provides automatic peak detection of an entire channel or a selection within a channel
• Provides several analysis presets suitable for general and specific types of waveforms
• Provides extracted parameters in a table that can be exported to other applications
• Detects positive or negative peaks

Peak Analysis Settings

The Peak Analysis Settings dialog provides the means to select Detection, Calculation and Table View options appropriate for the signal being analyzed.

• Detector settings determine how stimulus artifacts and peaks are detected. The following analysis presets are available:
  • Action Potentials – ideal for intracellular neuronal action potentials
  • Cardiac Action Potentials – ideal for monophasic intracellular and extracellular cardiac action potentials
  • Evoked Responses – ideal for monophasic peaks that follow a stimulus
  • General Unstimulated – ideal for peaks in waveforms without stimuli
  • Population Spikes – ideal for extracellular evoked responses
  • Synaptic – ideal for synaptic measurements.

Detector tab in the Peak Analysis settings dialog

• The Calculation tab allows the user to set the boundaries for the calculation of peak parameters. Different parameter options are available for each type of analysis.

Calculations tab in the Peak Analysis settings dialog

• Table View options determine which calculated parameters are displayed in the Table View.

Table Options tab in the Peak Analysis settings dialog

Peak Analysis View

The Peak Analysis View displays all detected peaks one by one.

You can either scroll peak-by-peak in the Peak Analysis View, or select the peaks of interest in the LabChart View or Table View.

As these views are interactive, selecting the peak in one means that all three will display information about the selected peak.

The Peak Analysis View:

• Displays each peak and its parameters
• Allows scaling of the display

• Displays waveform cursor coordinates
• Displays parameter summary information

Table View

The Table View displays calculated parameters for all detected peaks.

• Selecting a row in in Table View will highlight the corresponsing peak in the module's Analysis View as well as the Chart View.
• By clicking Export, you can save the Table View contents as a text file that can be opened in other applications.
• The Settings button allows you to choose which parameters to display in the Table View.
• Clicking Add to Data Pad, copies the values to LabChart's Data Pad to allow exporting and OLE linking to other applications such as Microsoft Excel.

Display of Calculated Peak Parameters in LabChart

Any calculated parameters can be displayed as a waveform in individual LabChart channels. This is particularly useful for real-time (online) analysis. Peak Analysis channel calculations can be selected in each Channel Function menu.

Available as Part of LabChart Pro

The Peak Analysis Module is also available as part of LabChart Pro. Visit the LabChart Pro information page prior to making a purchasing decision. Existing LabChart users and PowerLab system purchasers can upgrade to LabChart Pro at a special price. If you need more information please contact your ADInstruments Representative.

More Information

For more information download the Software Booklet (5.83 MB) or contact your nearest ADInstruments Representative.