This section introduces the interpretation of brain activity in terms of dynamic system theory, in particular using models of transient dynamicsTransientdynamics, in particular, encoding in complex cycles and chaotic attractorsChaotic attractor. A hierarchical approach to neural dynamics is formulated as the Freeman K model, which is based on studying olfactionOlfaction, and later generalized to other sensoryNetworksensory systems. In the intact olfactory system, the oscillations in bulbar and cortical ECoG are chaotic due to the interaction of oscillatory brain regions with incommensurate frequencies. These conditions yield sustained aperiodic oscillations that imply the existence of a nonconvergent attractor in the rest state and in the absence of sustained input from the receptors. Cinematic theory of brain operation is introduced, where the brain state undergoes frequent switches between metastable activity patterns, interrupted by brief desynchronizationDesynchronization periods. The intermittent synchronization-desynchronizationDesynchronization transitions can be interpreted as the manifestations of sudden conscious insights, in terms of the Global Workspace Theory (GWT).