Two experiments will be performed using MEG, EEG and fMRI techniques. Both experiments will use visuo-motor control tasks. Two motor responses (given by two fingers of the dominant hand) will be simultaneously performed. Experiment 1 will use single motor tasks; Experiment 2 will use dual motor tasks. In both experiments, the attention demands will vary with the execution mode of the motor outputs (competitive or cooperative). In competitive tasks, the visual stimuli will be used to perform two independent motor outputs. In cooperative tasks, the visual stimuli will be used to perform two coupled motor outputs. The effect of the execution mode on brain connectivity will be isolated comparing competitive and cooperative tasks. The sensory information must be associated to the motor command to perform a given motor task: this process is called sensorimotor integration. With both experiments, we will be able to dissociate the network connectivity linked to: