The idea of consciousness being determined by neuroscience is one that is related to the question of free will. The concept of consciousness from a neuro-scientific point of view is that it is the brain's ability to perceive something outside of itself somehow. Given that the role of consciousness in human thinking is itself a hotly debated area, neuroscience alone cannot yet explain it fully. That said, strictly physiological explanations of consciousness are possible even if they are not yet completely understood.