Computer and AI vs. Human Brain

What is the difference in the calculation depth between computer and artificial intelligence compared to the human brain? This is the main question which will be approached in the present manuscript. Many aspects of different perspectives will by examined - from the mere enumeration of calculation capacities of both worlds till philosophical and even spiritual aspects of this question.  

In nature, consciousness and intelligence arises from the first beginnings of life. Those minimal units of consciousness will be refined over the many stages of cell differentiation till the enormous calculation capacity of the brain. However, to find a clue to the secrets of imagination, inspiration and intuition, you must go even much deeper - till the foundations of matter and information themselves. Here you encounter the borders to the zero-point fluctuation and even kind of membranes till “higher dimensions”. These higher degrees of freedom and of possibilities cannot be regarded without entering the realm of quantum physics as well as of spiritual definitions.