Stimulating and Photoactivating

A typical stimulation/photoactivation procedure in NIS-Elements can look like this:

  1. Connect the Stimulation Device

    Add your stimulation devices using the Device Manager. The following items can be used as a stimulation device:

    Native Illumination Device

    A physical device such as Nikon A1/C2 or Andor Mosaic III

    Optical Configuration, Shutter

    Any optical configuration or a shutter can be used as a stimulation device. No stimulation ROIs are used in this case.

  2. Choose its Stimulation Path

    In the Lightpath Selection table of the Device Manager select the light path with your stimulation device. If it is not listed, use Settings... and add the stimulation item from there.

  3. Create a Stimulation Configuration

    On the device pad, create a stimulation configuration and save it. In our example, we set the laser power of the DMD device and click Add New Stimulation Configuration, and save it as Preset_1.

  4. Define Stimulation ROI(s)

    1. Open a document acquired by the camera.

    2. Define a ROI(s) with one of the tools - e.g. ROI > Simple ROI Editor.

      Note

      • A ROI does not have to be drawn. You may for example convert a binary layer to ROIs. Please see Introduction to ROIs.

      • Some devices allows to define a single-point or a line stimulation ROI. You can draw them via ROI > Simple ROI Editor.

    3. Right-click on the ROI(s) and select Assign to: Device > Name of your Preset. In our example we assign Preset_1 to ROI number one.

      Note

      Current configuration represents the last used preset available. It is present even if no preset was ever created. It is equal to assigning a ROI directly to the stimulation device but not to a specific laser power.

  5. Stimulation Setup

    1. Display the stimulation setup window. Depending on the type of your experiment, run:

    2. Select the correct stimulation configuration using the ... button.

    Note

    To create more complex stimulations, please consider getting JOBS and HCA with its stimulation tasks.

  6. Review Stimulation Info

    Once the experiment is finished, stimulation info can be displayed on several locations:

    ND navigation toolbar

    The stimulation phase is highlighted in yellow color on the ND navigation toolbar:

    Image Information Window

    Run the File > Image Properties command and go to the Recorded Data tab. Stimulation timing is indicated by the yellow lines.

    Time Measurement Window

    Perform time measurement (see Time Measurement) on the acquired data set. The stimulation phase is displayed in the graph in yellow.

    Or, switch to the data tab where frames used for stimulation are pointed out on the right:

  7. Analyse the Results

    To analyze the experiment results you can use the general measurement tools (Measurement on Graph) or, when you are performing FRAP experiments, you can use the Define FRAP Calibration... tool (Time Measurement Tools).