We suggest quantum generalization of the method of causal analysis used before only for the classical variables. The causality parameters for the series of examples of two-qubit entangled states are computed. The results are compared with the concurrence and degree of mixedness of the states. The role of state asymmetry in quantum information transfer is shown. For the qubits under nonuniformity external magnetic field the nontrivial role of this nonuniformity for subsystem causal connection has been studied. At last quantum causal analysis helps to understand Cramer principle of weak causality which admits extraction of information from the future without the classical paradoxes.

Phenomenon of quantum nonlocality may play an important role in some macroscopic brain processes. But as a matter of mechanism of persisting of entanglement on macro-level is very difficult, it is reasonable at the beginning to study macroscopic nonlocality on simple non-living systems. Nonlocal dependence of dissipative processes is described as relation of the entropy productions in a probe process (detector) and environment and probably has in its foundation quantum nonlocality. Its peculiarity is availability of unusual advanced correlation for noncontrolled by an observer processes. The natural process of geomagnetic variations gives a convenient possibility for study of this effect. The long-term experiment allowed to estimate the cross-section of nonlocal transaction and to detect advanced correlation. The possibility of employment of the latter for geomagnetic activity forecast has been demonstrated. Similar advanced transaction might take place in the dissipative processes in some brain structures.

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