During the period from 1944 to 1965, researchers advanced the prognostic framework for brain injury by formalizing post-traumatic amnesia duration as a robust predictor of long-term outcomes, and by mapping disturbed consciousness to recovery trajectories. The work also integrated neuropsychological methods to relate specific cognitive deficits to lesion sites, particularly in frontal networks, while pathology and physiology converged to illuminate diffuse axonal injury and intracranial dynamics. Continuous intracranial pressure monitoring began to guide acute management, marking a shift toward physiology-driven care in critical settings.