Zusammenfassung

Menschen handeln, um mit ihren Bewegungen wahrnehmbare Veränderungen (Handlungseffekte) zu bewirken. Dazu müssen sie diejenigen Effekte überwachen, die ihre Körperbewegungen erzeugen. Bei zeitlich überlappenden Mehrfachtätigkeiten muss diese Überwachung häufig stattfinden, während bereits weitere Handlungen bereitgestellt werden sollen. Aufbauend auf den Arbeiten der ersten Projektphase sollen die Randbedingungen eines derartigen Überwachungsengpasses weiter spezifiziert werden. Neben der Rolle temporärer Bindungen zwischen Reaktions- und Effektmerkmalen für die Bearbeitung konkurrierender Aufgaben soll die Beziehungen zwischen Effekt- und Fehlerüberwachung spezifiziert werden, sowie Kontextfaktoren identifiziert werden, die eine gleichzeitige Überwachung von Handlungseffekten und Bearbeitung anderer Aufgaben fördern. Die Studien werden einen bislang wenig beachteten "Flaschenhals" bei der Bearbeitung von Mehrfachtätigkeiten und potentielle Möglichkeiten seiner Umgehung aufdecken.
(DFG-Projektnummer 274800990)

Zusammenfassung

Abstract (2018-2021):
Humans act to produce certain sensory consequences. To do so, we have to monitor the effects we produce by our motor behavior. With temporally overlapping tasks, such monitoring often has to take place while another action has to be specified. Based on our previous project work we aim to further scrutinize the nature of limitations induced by monitoring of action effects in one task for processing another task. Besides the impact of temporary bindings between response features and effects features on concurrent task processing, we aim to scrutinize the mutual relationship between effect monitoring and error monitoring. Moreover, we will study context factors that might facilitate concurrent monitoring of action effects in one task and processing of another task. The studies will reveal a barely considered “bottleneck” in dual tasking including ways to attenuate its impact.
Abstract (2015-2018):
Humans act to produce certain sensory consequences. To do so, we have to monitor the effects we produce by our motor behavior. With temporally overlapping tasks, such monitoring often has to take place while another action has to be specified. Based on previous research we assume that monitoring body-external action effects can barely run parallel with the specification of other actions, or monitoring of other action effects. The project aims to scrutinize the boundary conditions of such effect monitoring processes. We first want to identify features of action effects that conceivably deteriorate dual-task performance in a more or less bottom-up manner. This applies, among others, to temporal delays of monitored events and (spatial) incompatibility of these events to the motor actions by which they are produced. We will then study conditions that enable flexible scheduling of monitoring procedures, so that parallel actions no more suffer or even benefit from effect monitoring. We assume that instructions, strategic implementation of monitoring breaks, and direct responses to effects that shortcut response selection in another task are particularly interesting in this respect. Altogether the project will unravel a so far barely considered “bottleneck” in multitasking and possibilities to circumvent it.
(DFG-Project number 274800990)