In order to understand healthy and pathological human brain development and function, we also have to better understand the underlying brain networks and brain rhythms, to understand how brain areas are connected and communicate with each other in the healthy and altered human brain.Hunan brain imaging technologies provide a superb opportunity to study such neural networks and its structural, functional and temporal connectivity as a pre-requisite for a normal trajectory for brain development and the establishment of cognitive processes, such as language, learning and memory.This talk will highlight the significance of brain network oscillations and dynamics contributing to sensory perception and cognition.Also, the talk will further demonstrate how brain networks can become slightly or severely dysrhythmic relating to altered and pathological cognition functions, and how global brain network connectivity can fracture in traumatic brain injury patients relating to unconsciousness.The talk will also highlight the desperate need for such objective neuro-diagnostic measures and the current improvements in cognitive and surgical interventions.