In addition to the three dimensional components characteristically associated with macro anatomy, the brain is an organ that changes with time and experience, has fast and slow neurotransmission (time), is able to change itself genetically as well as switching genes on an off and so adjust its epigenetic component that can cross generations. In addition we have a Wi-Fi like mirror neuron system network that allows communications with others not only through language but emotional and social cue interpretation what has been called theory of mind.Not only do we have our own intranet but are also connected globally with other brains that influence us - an internet in other words. Visible macroanatomic changes may variously reflect the underlying, at times extensive microscopic changes.
Hoffmann M (2011) Beyond the Three Dimensional Aspects of Neuroanatomy: The Multidimensional Brain. Anatom Physiol 1:e101