During no-go trials, discharge was not significant during delay 2 and the action periods (Fig. 3 C, D, periods 5 7).
A major part of it is to account for supply noise during delay testing.
The liquid is drawn into the chamber when the membrane is pulled (during delay time) and dispensed when it is pushed [[24]].
For instance, during delay periods in working memory tasks, while stimuli are represented in working memory, neurons in the prefrontal cortex, thought to support the memory representation, exhibit time-varying neuronal activity.
Another study employed a continuous pairing design during trace conditioning and a 50% pairing rate during delay conditioning [27].
For example, during delay conditioning, there is a specific stimulus (e.g. a light or tone) that is played continuously through the delay.
This structural observation is in accord with the finding that neurons in this area perform 'active maintenance' during delay tasks [55].
Because the stimulus remains on during delay conditioning, the stimulus may serve to focus attention, which differentiates the Stimulus-on state from other states.
While working memory models have mostly concentrated on bistable persistent activation, some efforts have also addressed the issue of cue- or response-coupled patterns of activity that steadily increase and decrease during delay periods.
