Updating of sensorimotor communication in an asymmetric alternating joint action task based on real-time learning of interaction differences

By manipulating task and feedback variables, the present study investigated the dynamic impacts of contexts and coordination results on sensorimotor communication pattern, and how sensorimotor communication affects interpersonal motor coordination. The results were as follows. (1) In the no-feedback group, the accuracy of the asymmetric alternating joint action task was significantly higher than that of the baseline task; in the asymmetric alternating joint action task, the accuracy of the feedback group was significantly higher than that of the no-feedback group. (2) Regarding the no-feedback group, compared to the baseline task, in the asymmetric alternating joint action task, information senders showed sensorimotor communication pattern with a gradual increase in the target key DT from T1 to T4. (3) The SNR of the target key DT was larger for the no-feedback group than for the feedback group, both in the baseline task and the asymmetric alternating joint action task. Further analyses revealed that in the asymmetric alternating joint action task, a different sensorimotor communication pattern emerged in the feedback group compared to the no-feedback group, and the variability of the target key DT was significantly larger in the feedback group than in the no-feedback group.