Knowledge Base

Calculate the Statistics

Time Before Reaching a Zone

In step 2, click the button next to In zone. Specify the zone you are interested in. In the Trial Statistics tab, select Latency to first.

Distance or Velocity in a Zone

1. Choose Analysis > Data Profile > New or open an existing Data profile. In the box Results click Settings, then select Results per zone. Next, choose the zones you want the results for.
2. Open an Analysis profile. Choose the variable you want to calculate. For example, Distance moved. Next, choose Analysis > Results > Statistics and Charts.

Notes

• EthoVision XT offers a wide range of analysis variables and methods to select data. See Other Analysis Options below.
• In the results screen, the Trial Statistics tab shows the analysis results per trial, while the Group Statistics & Charts tab shows the results for all trials together, or for the groups of trials defined in your Data profile. To modify the layout of the results table, click the Layout button.
• To carry out multiple calculations at once with different filters, data profiles or analysis profiles, click the Batch button.

Visualize the Data

Track Visualization

Choose Analysis > Results > Plot Tracks to view the tracks that you selected. This allows you to visually compare tracks. You can play back your tracks to see how your subjects moved.

To display the entire track, under Filter deselect the Last [ ] seconds option, then click the Jump to End button in the Playback Control window.

Integrated Visualization

Choose Analysis > Results > Plot Integrated Data to view the track with the corresponding video (when video was recorded) and the time plot of the dependent variables (velocity, etc.).

To plot a variable:

1. Open an Analysis profile and add the dependent variable you want to view.
2. Choose Analysis > Results > Plot Integrated Data.

Other Analysis Options

Heatmaps

Choose Analysis > Results > Plot Heatmaps and click Plot Heatmaps on the toolbar. With heatmaps you get an immediate impression of which area the animal spent most time in.

Select and Group Tracks

Choose Analysis > Data Profile > New.

To Analyze Some Tracks, Not Others

1. Choose one of the options under Filter. For example:
   • Choose Trial Name and select the trials you want to analyze.
   • Choose Dose (an independent variable previously defined) and choose the values of the variable you want to use.
2. Insert the Filter box between Start and Result 1.

To Analyze Tracks in Groups

For example, you want to compare the results for subjects treated with a drug with those for control subjects.

1. In the Trial List, make sure that the independent variable that you want to use for grouping is defined, and that each trial is labeled with one of the possible values (e.g. Treated vs. Control).
2. Make a Filter for the first group based on one of the values of the independent variable, and place the resulting box between the Start and the Result 1 box.

Source: EthoVision XT 19 - Quick Start Guide