Move events feature

Move events feature

This article details how to use the move event feature to perform a post detection adjustment of algorithms  

1. What is the Move event feature ? 

During the data processing, algorithms detect the cardiac and respiratory cycles by placing events markers, then calculate physiological parameters for each detected cycle. This detection is configurated by the user in the Detection Parameters window. 

Sometimes some cycles are considered to be “incorrectly detected” by the user, i.e. the detection marks (crosses) are missing, are not placed in the best place or are even placed on non-physiological cycles (e.g. movement artifact). 
If most of the cycles are considered to be “incorrectly detected”, the user should launch a new detection by modifying the detection parameters.

On another hand, if only some cycles are in this state, the user can manually adjust the existing detection with the “MOVE EVENT” feature. This feature allows to add, erase, or move events and cycle on an existing MERGE session detection. An automatic adjustment of the calculated parameters will be performed once the modification is validated.

Note: This feature is not available for the Inspect window of the analysis visualization 

2. How to modify the event detection ?

To perform a detection adjustment of a recording signal, open the merge visualization of the desired session: 

1. Open the targeted inspect point view [1]
To open a inspect view click on a calculated parameter point on the MERGE view for exemple. 
2. Click on the EDIT MODE button [2]



3. Chose an action: Exclude, Add or Move, and follow the indications mentioned next to it
The details of the various action are available on the next part of this chapter
4. Finally click on UPDATE
If the UPDATE step is not carried out, the changes are not saved and the new detection is not applied



Legend for the edit mode view:

​
      • Colored cycle + cross on the events = Cycle and events automatically detected by the algorithms
      • Gray cycle + colored dot on the events = Cycle manually added and included in the detection / calculation
      of the parameters
      • No cycle colored + unmarked events = Cycle not detected / not included in the calculation of the parameters

A.      Exclude 

Two ways are available to exclude cycles: 


1- Excluding cycles one by one with the following procedure:

On the inspect view and once the Edit mode is activated, select the “Exclude cycles” choice in the action list.

Then Click on a cycle (colored area) to exclude it. As shown in the first previous example, four colored cycles were excluded by clicking on them.




2- Excluding all the cycles of the inspect views with the following button:

EXCLUDE ALL DISPLAYED CYCLES.

Effectively, as shown in the second previous example, the colored cycle detected by the algorithms are not marked anymore. 


B.      Add

•To add the undetected cycles in the detection [1]:
• Click on the point defining the beginning of the cycle to add [2]
•Click on the point defining the end of the cycle to add [3]
• Add as many cycles as desired
• Finally click on the UPDATE button: the added cycles are taken into account in the detection [4]



Tip: Clicking on an existing cycle will place the point on the nearest available part of the signal. This simplify adding consecutive cycles, thus gaining time.

C.      Move

To move poorly detected events [1]:
• Click on the event to move (here the Vmin, blue point). [2]
• Click on its new position or use ← → (arrow keys) to move it
• Press V key to validate or Esc to cancel [3] Make sure to disable caps lock on your keyboard In this example, the Vmax and the Vmin events are replaced before validation
• Click on the UPDATE button: the event modifications are taken into account in the detection [4]



Please note that updating the detection will disable existing analysis, which will need to be reperformed, by simply clicking on it 



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