Event Files: Evidence for Automatic Integration of Stimulus-Response Episodes

One of the main functions that visual attention serves in perception and action is feature binding; that is, integrating all information that belongs to an object. The outcome of this integration has been called “object file”, a hypothetical memory structure coding episodic combinations of stimulus features. Action-oriented approaches to attention, however, suggest that such a purely perceptual or perceptually derived structure may be incomplete: If attention subserves action control, object files may include action-related information as well. That is, featurebinding may notbe restrictedto stimulus features butalso includefeatures of the responses made to the respective stimulus. In three experiments, subjects performed simple, already prepared left- or right-key responses (R1) to the mere presence of “Go” signals (S1) that varied randomly in form, colour and location. Shortly after the prepared response, a binary choice reaction (R2) to the form or colour of a second stimulus (S2) was made. The results ...