presentation_id
In a multitasking setting, a particular instance of a stimulus (e.g., the current letter "A") may be used by multiple tasks at the same time (e.g, in the dual N-back task). Because these are different trials, they will have different trial_id values and hence will have different rows in the Stimulus table. We use presentation_id to indicate that a given stimulus is in fact the same instance across those trials.
info
Part of the Context category of the Stimulus table in the trial schema.
Details
| Property | Value |
|---|---|
| Type | string |
| Requirement | optional |
| Categories | Context |