摘要：SummaryHuman sensorimotor interaction requires mutual behavioral adaptation as well as shared cognitive task representations (Joint Action, JA). Yet, an under-investigated aspect of JA is the neurobehavioral mechanisms employed to stop actions if the context calls for it. Sparse evidence points to the possible contribution of the left dorsal premotor cortex (lPMd) in sculpting movements according to the socio-interactive context. To clarify this issue, we ran two experiments integrating a classical stop signal paradigm with an ecological JA task. The first behavioral study shows longer Stop performance in the JA condition. In the second, we use transcranial magnetic stimulation to inhibit the lPMd or a control site (vertex). Results show that lPMd modulates the JA stopping performance. Action stopping is an important component of JA coordination, and here we provide evidence that lPMd is a key node of a brain network recruited for online mutual co-adaptation in social contexts.Graphical abstractDisplay OmittedHighlights•Interaction requires mutual adaptation and a shared cognitive task representation•Sensorimotor representations must be negotiated between partners to achieve the goal•Motor suppression mechanisms might be essential in Joint Action coordination•Dorsal premotor cortex (PMd) plays a key role in guiding Joint Action coordinationSocial interaction; Neuroscience; Behavioral neuroscience; Cognitive neuroscience
