Concussion

摘要: Among the many features common to all species of animal kingdom is transient loss function nervous system as result a jarring blow, phenomenon known concussion. Understanding concussion has been hampered by lack uniform definition, with authors including cases gross, irreversible changes. The occurs only blow that significantly accelerates and thus best defined "a disturbance neuronal acceleration." There must be threshold beneath which no ceiling beyond changes are not reversible. Experiments nonanesthetized frogs revealed at 33 g occasional frog would stunned. From 50 230 g, consciousness was always lost but rapidly regained retained, while beyond, time functional increasingly proportional acceleration.