Move

Definition

A discrete (state event) variable that marks the time that the focal subject makes some displacement in space. The subject may move alone (here below, left) or in contact with any other subject (right).

Calculation

EthoVision XT considers the subject moving for the time between two subsequent events of type Stop. Events of type Stop are scored when the speed of the subject is lower then the threshold value (5.26 cm/s or 2 ^5/64 in). This threshold is set in the Live Mouse Tracker algorithms and cannot be changed.

How to specify Move

1.Open an Analysis profile and in the Dependent Variables panel, under Live Mouse Tracker, click the Add button next to Move.

2.Under Calculate Statistics for, select Move in contact, Move alone or both.

3.Click the Receivers tab. These apply when you select Move in contact.

Under Select, choose the subjects that were in contact with the focal subject while it was moving. If you select two or more subjects, select one of the available options from the list:

▪All selected subjects: Move in contact is scored only when the focal subject was in contact with all the subjects selected above.

▪Any selected subject: Move in contact is scored when the focal subject was in contact with any of the subjects selected above.

▪Each subject: Move in contact is scored when the focal subject was in contact with one of the subjects selected above. The results are displayed for each Receiver.

4.Complete the procedure to add the variable to the Analysis profile. See Calculate statistics: procedure

Example

In the Trial Statistics results table, with the default layout, the results of Move are shown per subject (on the rows). The columns vary depending on what you chose in the Receivers tab (see above).

▪If you chose Each subject, the columns contain the statistics of Move in contact with specific subjects (With A to D).

▪If you chose All selected subjects or Any selected subject, a column With all of A, B, C, D or With any of A, B, C, D contains cumulative statistics of Move when the subject was in contact with all cage mates or any of them, respectively, depending on which option you chose.

Notes

▪Move may look similar to EthoVision XT’s Movement, with its possible states Moving and Not moving. However, the results may not always overlap. Movement uses two adjustable speed thresholds, which filter the changes in velocity in a different way.