| We have investigated human intentional mental properties (e.g. top-down cognitive processing). We have tried to find its electrophysiological correlates, which can be consequently employed as potent brain signals to cognitively control the brain-machine interface (BMI). We have also investigated how to modulate neural and cognitive activities in a non-invasive manner, leading to changes in cognitive and behavioural responses. Recently, we focus on the study of Consciousness.