Why is a "conscious field," presenting all the stimuli and memories occurring at one moment in time, necessary? It seems that one important reason might involve time.

The trial-to-trial variability of neuronal responses and the correlated response variability among neurons are modulated by visual stimulus size in a manner that depends on cortical layer, suggesting ...

Our actions are triggered by various internal and external signals (stimuli). These signals may occur from verbal or physical interactions, ongoing or scheduled tasks, urgent requests, reminders, ...