Nesting over Body elongation state

Aim

To pick out data collected when the subject was in one of the Body elongation states: Stretched, Normal or Contracted.

example Analyze the time that the subject spent in the zones Object and Rest of arena when it was in the Stretched state. The aim is to test whether the subject spent more time stretched near the object than when in the rest of the arena.

Nesting vs. Nesting over Subjects

Notice the difference when there are multiple subjects in the same arena:

▪To select data of a subject based on the Body elongation state of that subject, choose Body elongation state under Nesting. See the procedure below.

▪To select data of a subject based on the Body elongation state of other subjects, choose Body elongation state under Nesting over Subjects. There you find the Actors tab where you can specify which subjects (Actors) were in a certain Body elongation state. See Nesting over subjects

Procedure

1.In the Data Profile, under Nesting click the button next to Body elongation state.

2.In the Body Elongation State window:

▪Under Outlier filter, enter an Averaging interval to smooth the body elongation values.

▪Under Threshold, enter the thresholds that defines the states Stretched, Normal and Contracted.

▪Under Calculate nesting for, select the state that the intervals are based on.

For details about how Body elongation state is calculated, see Dependent Variables in Detail > Body elongation state.

3.Click OK. Proceed with step 4 in How to select track segments.