An element of type sequence is a parent element which you can link to any number of other elements that you have in the trial. The sequence element runs those child elements in a sequence, by default repeating. You only need to set start and end conditions (properties start/end) for the sequence element, not its child elements. The sequence element starts them, alternates between them, and ends them automatically.

sequence elements are mainly useful for setting up repeating sequences of elements. For regular non-repeating sequences you can generally use properties start/end (especially field endOf) of the elements directly.

"Ends on its own" means ends automatically at that point. If an element can end on its own, you don't need to set end conditions for it in property end (unless you want it to maybe end earlier).

elementExprs

No default

A string or array of strings pointing to elements to run through by their variable names and possibly indexes. You can include empties for breaks in the sequence. e.g. <cd>[<cd><cds>"pictures(1)" "" "pictures(2)" ""<cds><cd>]<cd> or <cd>{<cd><cds>'pictures(1)'<cds><cd> [] <cd><cds>'pictures(2)'<cds><cd> []}<cd>. (In the visual method you can specify a name/index for an object in its object heading, default = object type name. In the coding method it's just the variable name you use in the experiment script.)

interval

Default: 1 sec

A number that is the interval to run each element/break for before switching to the next one (sec). Or a vector for different intervals for different elements/breaks.

repeat

Default: repeat until a condition you set in property end

<cd>true<cd>/<cd>false<cd>: repeat the sequence until a condition you set in property end. If = <cd>false<cd>, the sequence ends on its own when the last element/break in it ends.

(None)