EthoVision XT - 7 More about conditions based on dependent variables
Last updated: Jul 25, 2026
7 - More about conditions based on dependent variables
7 More about conditions based on dependent variables
In this section you find details and examples of the statistics you can use for your condition (step 3 on page 72). For more information on a dependent variable, see the EthoVision XT Help. note Dependent variables of Live Mouse Tracker and the social variables Train and Side by side are not available in the Trial Control Settings.
distance moved
Frequently-used statistics
Current (default). To base your condition on the distance between the previous sample and the current one. This value depends on the chosen sample rate. Use Current velocity instead. Total. To base your condition on the distance traveled from the moment the condition becomes active up to that point. Mean. To base your condition on the average distance traveled from one sample to the next calculated from the activation of the condition box up to that time. This depends on the sample rate. Use Mean velocity instead. Effect of hidden zones. When the animal is in a hidden zone, the distance moved for the first sample in the hidden zone is based on the distance between the last location where the animal was detected and the center of the hidden zone. This is typically a relatively large distance, which can result in the condition becoming true. Effect of outliers (reflections). Detection of reflections may result in a too large distance moved and hence the condition being met.
velocity
In the Condition window, click the Settings button. Choose the body point on which calculation of velocity is based, and the Averaging interval. For details, see Velocity in the EthoVision XT Help. 7 - More about conditions based on dependent variables
Frequently-used statistics
Current (default). For a condition that is met when the velocity at the current sample is <=/>= a specified value. Total. This does not have a physical meaning and depends on the sample rate. Choose Mean instead. Mean. For a condition that is met when the mean velocity since the activation of the condition is <=/>= a specified value.
Notes
movement
In the Condition window, click the Settings button. In the Movement tab, specify which threshold values of velocity specify the states Moving and Not moving. Optionally, choose an Averaging interval to smooth out random changes in velocity that do not reflect real movement.
Frequently-used statistics
Current. For a condition that is met when the animal's current state is either true (Moving) or false (Not moving). Frequency (default). For a condition that is met when the animal has moved/not moved a number of times. Cumulative duration. For a condition that is met when the animal has moved/not moved for a specific time since the activation of the condition.
example A Movement condition is defined to stop tracking after 10 minutes of
movement. If the animal moves during the first 2 minutes, stops moving for 3 minutes 7 - More about conditions based on dependent variables and then moves again without interruption. The track is stopped 13 minutes after the start. Current duration. For a condition that is met when the animal has moved/not moved continuously for a specific time. In the same example as above, the condition would be: stop tracking when the current duration of movement is 10 minutes. Tracking would stop when the animal had moved continuously for 10 minutes, that is 15 minutes after the start. Latency to first. See page 73 and Figure 24 on page 74.
acceleration
In the Condition window, click the Settings button and choose the options you require.
Frequently-used statistics
Current (default). To base your condition on the current value of acceleration. Total. To base your condition on the total acceleration from the moment the condition becomes active up to that point. Note that this value does not have a physical meaning and depends on the sample rate. Choose Mean instead. Mean. To base your condition on the average acceleration. The average is calculated from the activation of the condition box up to that time. note Acceleration state is not available as condition criterion. However, you can create a Multi condition (page 101) that includes for example a condition "Acceleration > 10 cm/s2 for more than 1 second". This corresponds to a state variable based on Acceleration.
in zone
In the Condition window, click the Settings button. Under In the following zones, select the zones of your choice. Under From following body points, select the body points of the animal that determine whether or not the animal is considered to be within a zone. Under Threshold, enter a Zone exit threshold to avoid that small movement of the body points across zone borders result in unrealistic scores of zone entries. Such movements are usually caused by body-point jitter, or the behavior of the subject (stretching, curling etc.). 7 - More about conditions based on dependent variables
Frequently-used statistics
Current. To base your condition on the presence of the animal in a zone at that time: either true (In zone) or false (Not in zone). Frequency (default). To base your condition on the number of times the animal has been in the zone. important The frequency of In zone becomes high very easily when the animal walks along the edge of a zone. This may result in the condition being met sooner than expected. If this happens, increase the Zone exit threshold. If that does not help, open
the Detection settings and click Advanced, then under Smoothing set Track noise
reduction to On. This smooths the track during acquisition, which means that the track is altered, which cannot be reversed afterwards. Cumulative duration. To base your condition on the cumulative duration the animal has been in the zone up to that time since the activation of the condition. example In a Novel Object Recognition test, stop tracking when the animal has been in the zone with the novel object for 30 seconds. After the activation of the condition, the animal spends the first 5 seconds in the zone with the novel object, then 10 seconds in the zone with the familiar object and 45 seconds in the zone with the novel object, the track is stopped 40 seconds after the activation of the condition (indicated by A). Current duration. To base your condition on the time the animal has been in the zone without interruption up to the current time. If in the example above, the condition had been defined as: stop tracking when the current duration in the zone is 30 seconds, the track would have been stopped 45 seconds after the activation of the condition. 7 - More about conditions based on dependent variables Latency to first - See page 73 and Figure 24 on page 74.
distance to zone
In the Condition window, click the Settings button. Under To the following zones, select the zones of your choice. Select Include if in zone if you want to calculate the distance to the border of a zone, regardless of whether the subject is outside or inside the zone. Under From the following body points, select the body point of the animal you want to use to calculate the distance.
Frequently-used statistics
Current (default). To base your condition on the current distance of the animal's body point to a zone. example Switch on a light when the current distance from the entrance of the shelter is less than 5 cm. Total. This depends on the sample rate. Choose Mean instead. Mean. To base your condition on the average distance of the animal's body point to a zone measured since the activation of the condition. example Stop the track when the average distance from the zone with the novel object is smaller than or equal to 10 cm.
distance to point
In the Condition window, click the Settings button:. Under To the following points, select the points or center of zones of your choice. If you select two or more points, the condition is based on the shorter distance between those points and the animal's body point. Under From the following body points, select the body point of the animal you want to use to calculate the distance.
Frequently-used statistics
Current (default). To base your condition on the current distance of the subject from the point. Total. This has little physical significance. Furthermore, its value depends on the sample rate (the higher the sample rate, the greater the cumulative distance). Choose Mean instead. 7 - More about conditions based on dependent variables Mean. To base your condition on the mean distance from the point since the activation of the condition.
meander
In the Condition window, click the Settings button. In the Meander tab, select whether you want the condition to be based on the Absolute (unsigned) or Relative (signed) meander. Select Head direction meander when you want to base your condition on the angles formed by the Head direction line, not the body points (these will be ignored). In the Body points tab, select the body point on which you want to base the definition of meander.
Frequently-used statistics
Current (default). To base your condition on the current meander value. Total. To base the condition on the value of Meander cumulated since the activation of the condition. Mean. To base your condition on the mean value since the activation of the condition.
target visits and errors
Use Target visits and errors to control the trial based on the visits to target zones and errors (visits to non-target zones or target zone revisits). In the Condition window, click the Settings button. In the Target visits and errors tab, select the zones that are targets and non-target. Under Condition based on, select which variable you want to use.
Frequently-used statistics
Frequency (default). To base your condition on the occurrence/number of successes and errors since the activation of the condition. example Take an action as soon as the animal has made three errors entering three different non-target zones. From the Statistics list, select Frequency ≥ 3. Click Settings, select the non-target zones and then under Condition based on, select Non-target first visits. Note - When using first visits (target or non-target) in the condition, make sure that you enter a frequency less or equal to the total number of corresponding zones selected under Settings. For example, if you select Condition based on Target first visits and Frequency ≥ 3, make sure that you select at least three target zones under Settings. 7 - More about conditions based on dependent variables Latency to First. See page 73 and Figure 24 on page 74.
zone alternation
Use Zone alternation to create a condition based on alternation between specific zones. For example: stop tracking when the animal makes the ten alternations (A > B > C). In the Condition window, click the Settings button. In the Zone Alternation tab, select the zones of the alternation (for example A, B, C). Under Condition based on, select which variable you want to use. Select whether you want to consider only direct transitions. In the Body points tab, select which body points define the transition from one zone to the other.
Frequently-used statistics
Frequency (default). To base your condition on the occurrence/number of alternations or direct/indirect revisits in zones since the activation of the condition. example Take an action as soon as the animal has completed the tenth alternation. Click Settings, select the zones and then under Condition based on, select Alternations. From the Statistics list, select Frequency ≥ 10. Latency to First. See page 73 and Figure 24 on page 74.
zone transition
In the Condition window, click the Settings button. In the Zone Transition tab, click Add to define the zone sequence (for example A > B > C). Select whether you want to consider only direct transitions. Enter a Zone exit threshold to avoid that small movement of the body points across zone borders result in unrealistic scores of zone transitions. Such movements are usually caused by body-point jitter, or the behavior of the subject (stretching, curling etc.). In the Body points tab, select the body point that moves from one zone to the other.
Frequently-used statistics
Frequency (default). To base your condition on the occurrence/number of transitions between zones since the activation of the condition. example Take an action as soon as the animal has gone from the Middle zone to the Left Arm of a T maze five times (Frequency=5). important The frequency of Zone transition can become high very easily when the animal walks along the boundary between zones. This may result in the condition being 7 - More about conditions based on dependent variables met sooner than expected. If that happens, increase the Zone exit threshold. If this does not help, open the Detection settings and click Advanced, then under Smoothing set Track noise reduction to On. This smooths the track. Latency to First. example Take an action when the latency of the first transition from Zone A to Zone B is longer than 1 minute. See also page 73 and in the figure on page 74 replace the state In zone with a zone transition event.
heading
Use Heading for a condition based on compass-like orientation, provided that the axis orientation in the Arena Settings has some biological meaning. See also the notes for Head direction on page 92. In the Condition window, click the Settings button. In the Body points tab, select the body point that you want to use to calculate heading.
Frequently-used statistics
Current (default). To base your condition on the current heading value. Mean. To base your condition on the mean value since the activation of the condition.
heading to point
In the Condition window, click the Settings button. Under Select, select the point (or zone center) that your condition is based on. Under For the following body points, select the body point for which heading is calculated.
Frequently-used statistics
Current (default). To base your condition on the current meander value. Mean. To base your condition on the mean value since the activation of the condition. example Take an action when the animal's Heading to the Entry zone is less than 5 degrees. Select Current as Statistic, <= 5°. Click Settings and specify Entry zone (center). To restrict the condition to when the animal is moving, create a condition based on Movement, and combine the two conditions with an operator of type All. 7 - More about conditions based on dependent variables Note that Heading is about movement. If you want to create a condition based on the animal's head orientation, use Head directed to zone (see below).
head direction
Use Head direction for a condition based on compass-like orientation. Since Head direction depends on the orientation of the axes in the Arena Settings, Head direction make sense if the axis orientation has biological significance. If the animal must point to a zone or point, use Head directed to zone.
Frequently-used statistics
Current (default). To base your condition on the current value of head direction. Mean. To base your condition on the average head direction angle up to that time. We advise you to specify a range of Head direction, using two conditions (one specifying >=, the other <=). Then, combine the conditions with an operator of type All. example If the x axis points to North, then to make a condition that is met when Head direction is between NE and NW, combine: A condition that states Current Head direction <= +90°. A condition that states Current Head direction >= -90°.
head directed to zone
In the Condition window, click the Settings button. Under Zone of interest, select the zone or point that your condition is based on. Under Calculate when, specify to calculate the variable only when the animal (or one of its body points) is in a specific zone. We advise you to define a zone around the focal zone/point, so the variable is calculated only when the animal is near the focal zone.
Frequently-used statistics
Frequency (default). To base your condition on the number of times the animal's head points to a zone (or point). Current. To base your condition on whether the animal's head points to a zone (or point). example Take an action when the animal's head is directed to the novel object. 7 - More about conditions based on dependent variables By selecting Current, the condition will become true as soon as the animal's head points to a zone for an instant. If you want to make the condition become true when the animal's head points to a zone for some time, use Current duration instead. Cumulative duration. To base your condition on the cumulative time that the animal points to a zone or point since the activation of the condition. Current Duration. To base your condition on the time that the animal's head has been pointing to the zone without interruption up to the current time. For comparison, see the same for In zone (page 87). example Take an action when the animal's head is directed to the novel object for five seconds. Latency to first. See page 73 and Figure 24 on page 74.
turn angle
In the Condition window, click the Settings button. In the Turn Angle tab, specify whether the turn is Absolute (unsigned) or Relative (signed). Select whether you want to calculate the Head direction turn angle (body points will be ignored). In the Body points tab, select the body point that you want to use to calculate Turn angle.
Frequently-used statistics
Current (default). To base your condition on the current value. Total. To base your condition on the cumulative value (whether absolute or relative) since the activation of the condition. Mean - To base your condition on the mean value (whether absolute or relative) since the activation of the condition. Because the way turn angle is defined, the first value available for comparison occurs at the third sample (hatched square) after the condition has become active (black square). 7 - More about conditions based on dependent variables
angular velocity
In the Condition window, click the Settings button:. In the Angular velocity tab, specify whether the turn is Absolute (unsigned) or Relative (signed). Select whether you want to calculate the Head direction angular velocity (body points will be ignored). In the Body points tab, select the body point that you want to use to calculate Angular velocity.
Frequently-used statistics
See Turn angle above. Because Angular velocity is based on Turn angle, the first value available for comparison occurs at the third sample after the activation of the condition (see above).
activity
With Activity you can create a condition based on the change in pixels in the whole arena (thus not only in the detected body area) between samples. When properly set, this pixel change is supposed to be a measure for the subject's activity (for example, it is low when the subject freezes).
Frequently-used statistics
Current - The percentage pixel change in the arena relative to the previous sample.
Total - The total percentage pixel change in the arena, from the moment the box
becomes active (see Figure 3 on page 11) onwards.
Mean - The mean percentage pixel change in the arena, from the moment the box
becomes active (see Figure 3 on page 11) onwards. Set the Threshold in the field next to Is:. Click the Settings tab and specify the Averaging interval. important If you have inserted Condition boxes based on Activity in your Trial Control rule and then deselect Activity analysis in the Experiment settings, your rule becomes invalid. The Condition boxes based on Activity are removed from your sequence and the connecting arrows are removed. Redesign your Trial Control rule and connect the arrows between the boxes. note Activity state is not available as condition criterion. However, you can create a Multi condition (page 101) that includes for example a condition "Activity > 10% for more than 1 second". This corresponds to a state variable based on Activity. 7 - More about conditions based on dependent variables
body elongation
In the Condition window, click Settings and specify the Averaging interval
Frequently-used statistics
Current. To base your condition on the current value. For example, the condition is true when Body elongation < 50%. Total. This does not have a physical meaning and depends on the sample rate. In most cases you will need the statistic Current instead. Mean. For a condition that is met when the mean Body elongation since the activation of the condition is <=/>= a specified value. Like Total, this statistic does not have a "physical" meaning. In most cases you will need the statistic Current instead.
body elongation state
In the Condition window, click the Settings button. Specify the Thresholds and the Averaging interval that define the three Elongation states. Under Condition based on, select the state you want to base the condition on: Stretched, Normal, or Contracted.
Frequently-used statistics
Current. To base your condition on the current elongation state. example Take an action when the animal's state Contracted = True. Frequency. To base your condition on the number of times the selected elongation state occurred. Current duration. To base your condition on the duration of the current Elongation state.
Cumulative duration. To base your condition on the cumulative duration of the
Elongation state. Latency to first - See also page 73 and Figure 24 on page 74. To base your condition on the time from the moment the condition becomes active to the first occurrence of the chosen Elongation state. example Take an action when the latency of Stretched is longer than one minute. The condition is met when the animal is stretched, at least one minute from the moment the condition becomes active. 7 - More about conditions based on dependent variables
body angle
In the Condition window, click Settings and select Absolute angle (0° - 180° for the body bent either clockwise or counterclockwise) or Relative angle (0° - 360°).
Frequently-used statistics
Current. To base your condition on the current value. For example, the condition is true when Body angle > 20°. Total. This does not have a physical meaning and depends on the sample rate. In most cases you will need the statistic Current instead. Mean. For a condition that is met when the mean Body angle since the activation of the condition is <=/>= a specified value. Like Total, this statistic does not have a "physical" meaning. In most cases you will need the statistic Current instead.
body angle state
In the Condition window, click the Settings button. Specify the Threshold and the Averaging interval that define the four Body angle states. Under Condition based on, select the state you want to base the condition on: Straight, Bent, Bent counterclockwise, or Bent clockwise.
Frequently-used statistics
Current. To base your condition on the current body angle state. example To take an action when the animal's current state Bent counterclockwise = True. Frequency - To base your condition on the number of times the selected body angle state occurred. Current duration. To base your condition on the duration of the current body angle state. Cumulative duration - To base your condition on the cumulative duration of the body angle state up to that time. Latency to first - See also page 73 and Figure 24 on page 74. To base your condition on the time from the moment the condition becomes active to the first occurrence of the chosen Body angle state.
example Take an action when the latency of Bent is longer than one minute. The
condition is met when the animal is bent, at least one minute from the moment the condition becomes active. 7 - More about conditions based on dependent variables
mobility
With Mobility you can create a condition based on the change in the detected shape between the previous sample and the next one, expressed in percentage.
Frequently-used statistics
Current - The percentage change in the detected body area in comparison with the previous sample. Total - The total percentage change in the detected body area, from the moment the box becomes active (see Figure 3 on page 11) onwards. Mean - The mean percentage change in the detected body area, from the moment the box becomes active (see Figure 3 on page 11) onwards. Set the Threshold in the field next to Is:. Click the Settings tab and specify the Averaging interval.
mobility state
In the Condition window, click the Settings button. Specify the Thresholds and the Averaging interval that define the three mobility states. Under Calculate nesting for, select Highly mobile, Mobile, or Immobile.
Frequently-used statistics
Current. To base your condition on the current mobility state. example Take an action when the animal's current state Immobile = True. Frequency - To base your condition on the number of times the selected mobility state occurred. Current duration. To base your condition on the duration of the current mobility state. Cumulative duration - To base your condition on the cumulative duration of the selected mobility state up to that time. Latency to first - See also page 73 and Figure 24 on page 74. To base your condition on the time from the moment the condition becomes active to the first occurrence of the chosen Body angle state. example Take an action when the latency of Highly mobile is longer than one minute. The condition is met when the animal is highly mobile, at least one minute from the moment the condition becomes active. 7 - More about conditions based on dependent variables
rotation
In the Condition window, click the Settings button. In the Rotation tab, specify the criteria to define a rotation. Select Body axis rotation when you want to base the condition on the rotation of the body axis, rather than that of body points. In the Body points tab, select the body point you want to use to calculate rotation.
Frequently-used statistics
Frequency - To base your condition on the number of rotations occurred. Latency to first -To base your condition on the time from the moment the condition becomes active to the first rotation. See also page 73 and Figure 24 on page 74. example Stop tracking when the first rotation event occurs less than one minute from the moment the condition becomes active.
javascript variables
In the Condition window, click the Settings button and enter the JavaScript code that, when processed during acquisition, produce an output value. The condition will compare that value with those in the settings. This value can be Continuous, a State or an Event depending on which JavaScript variable you use. In the Actors tab, select the subject for which to calculate the JavaScript variable value. example You want to create a condition that is based on the body area of the subject. Because EthoVision XT does not provide the body area in the Trial Control Settings, you can extract this value with a JavaScript variable of type Continuous that contains the command GetArea*() (for details, see the EthoVision XT Help). The condition could be for example "Body area > 2000" where 2000 is specified in the condition settings. A few more examples: Create a condition that becomes true when the Body length exceeds a specific value for some time. Create a condition that becomes true when the number of subjects in a zone exceeds a specific value. Create a condition that becomes true when the distance of a focal subject to the nearest neighbor is smaller than a threshold value. tip On the download page of My.Noldus.com you find some examples of JavaScript variables. Browse to my.noldus.com (either log in or register first), then choose Downloads > EthoVision XT > Drivers and Tools. Download the file EthoVision XT 17 - JavaScript custom variables.zip. Contact Noldus if you need to define a special variable. 7 - More about conditions based on dependent variables
distance between subjects
In the Condition window, click the Settings button. In the Actors tab, select the subject and its body point that you want to use to calculate the distance to another subject. In the Receivers tab, select the other subject and its relevant body points (see also page 75). example To make an action when ano-genital sniffing takes place, use a condition box with a minimal distance between the nose point of one subject and the tail base of the other. Select Current as Statistic, then click Settings. Under Actors, select the focal subject and Nose-point. Under Receivers, select the other subject and Tail-base.
proximity
In the Condition window, click the Settings button. In the Proximity tab, specify the criteria to define proximity. In the Actors tab, select the focal subjects and their body points that you want to use to calculate proximity to other subjects (Receivers). In the Receivers tab, select the other subjects and their relevant body points (see also page 75). For dyadic interactions, select Subject 1 under Actors and Subject 2 under Receivers.
Frequently-used statistics
Current. To base your condition on the current proximity state. example Take an action when the nose-point of subject 1 is in proximity of tail-base of subject 2.
Frequency - To base your condition on the number of times the subjects were in
proximity of each other. Current duration. To base your condition on the duration of the current occurrence of In proximity. Cumulative duration - To base your condition on the cumulative duration of the selected proximity state up to that time. Latency to first - To base your condition on the time from the moment the condition becomes active to the first occurrence of the chosen proximity state. See also page 73 and Figure 24 on page 74. example Take an action when the latency of Nose point of subject 1 is in proximity of Tail base of subject 2 is longer than one minute. The condition is met when the nose point of subject 1 is in proximity of the tail base of subject 2, at least one minute from the moment the condition becomes active. 7 - More about conditions based on dependent variables
body contact
In the Condition window, click the Settings button. In the Body Contact tab, specify whether the condition is based on body contact or no contact. In the Actors tab, select the subjects that should be in contact (or not in contact) with any other for the condition to become true. From the Statistics list, choose the statistic to be used and the value that make the condition true. For example, if you want to create a condition that is met when body contact last 10 seconds without interruption, choose Current Duration >=10 s.
Frequently-used statistics
See the statistics for Proximity on page 99. note When you select multiple Subjects in the Actors tab, the condition is evaluated separately for each subject and then combined according to what you select from the With list. If you select Subject 1 and Subject 2 in the Actors tab, and select All selected subjects from the With list, the condition is met when both Subject 1 and Subject 2 are in contact with any subject (thus not necessarily in contact with one another). See also subjects in a condition on page 75.
relative movement
In the Condition window, click the Settings button. In the Relative Movement tab, specify at which maximum distance the subjects should be considered as 'interacting', and the criteria to define relative movement. In the Actors tab, select the focal subjects and their body points that you want to use to calculate relative movement to/from other subjects. In the Receivers tab, select the other subjects and their relevant body points (see also page 75).
Frequently-used statistics
See the statistics for Proximity on page 99.
net weighted movement
In the Condition window, select Current as Statistic, then click Settings. In the Net Weighted Movement tab, specify at which maximum distance the subjects should be considered as 'interacting'. In the Actors tab, select the focal subject and its body point that you want to use to calculate net relative movement to/from another subject. In the Receivers tab, select the other subject and its relevant body points (see also page 75). 7 - More about conditions based on dependent variables
weighted movement from
In the Condition window, select Current as Statistic, then click Settings. In the Weighted Movement From tab, specify at which maximum distance the subjects should be considered as 'interacting'. In the Actors tab, select the focal subject and its body point that you want to use to calculate weighted movement from another subject. In the Receivers tab, select the other subject and its relevant body point (see also page 75).
weighted movement to
In the Condition window, select Current as Statistic, then click Settings. In the Weighted Movement To tab, specify at which maximum distance the subjects should be considered as 'interacting'. In the Actors tab, select the focal subject and its body point that you want to use to calculate speed of moving to another subject. In the Receivers tab, select the other subject and its relevant body points (see also page 75).
conditions based on multiple dependent variables
Use a Multi condition to let EthoVision carry out an action when the subject performs a combination of behaviors. For example, to stop tracking when the subject's nose point has been in the novel object zone while having its head directed to the object for 20 seconds. 1. In the Components pane, under Conditions, double-click the name or click the button next to the Multi condition. tip If you do not see the variable name, click the More button. 2. The 'Multi Condition' Condition window opens. Under Name, enter a Condition Name. Under Comment (at the bottom) enter a description (optional). 3. Click the Settings button. In the Actors tab, select the Subjects to which the conditions apply. See subjects in a condition on page 75. 4. Click Add Condition. Select a dependent variable from the list. Click the Settings button and specify the details for this condition. See the paragraph on using this dependent variable as condition for details. 7 - More about conditions based on dependent variables 5. In the Is: field, specify the criteria, for example When nose-point is in zone Novel Object = True. 6. Repeat steps 4 and 5 for 0ther conditions. 7. From the list at the bottom select whether all conditions or one of them should be met. Click OK. 7 - More about conditions based on dependent variables 8. Under Condition is met when, select the Statistic you want to use.
Frequently-used statistics
Current. For conditions that are met when the dependent variables are true or not true at the current sample. Frequency. For conditions that are met when the dependent variable values occurred a number of times. Cumulative duration. For conditions that are met when the dependent variables values occurred for a specific time since the activation of the condition. Current duration. For conditions that are met when the dependent variable values occurred continuously for a specific time. Latency to first. See page 73 and Figure 24 on page 74. You cannot use conditions based on hardware devices in multi conditions. If you want to use multiple conditions with hardware devices, use multiple condition boxes with an Operator instead. See operators on page 34.
Source: EthoVision XT 17 - Trial and Hardware Control Reference Manual