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Damage to the white matter is more predictive of cognitive impairment after brain injury A new University of Iowa study challenges the idea that gray matter (the neurons that form the cerebral cortex) is more important than white matter (the myelin covered axons that physically connect neuronal regions) when it comes to cognitive health and function. The findings may help neurologists better predict the long-term effects of strokes and other forms of traumatic brain injury. The most unexpected aspect of our findings was that damage to gray matter hubs of the brain that are really interconnected with other regions didn t really tell us much about how poorly people would do on cognitive tests after brain damage. On the other hand, people with damage to the densest white matter connections did much worse on those tests. This is important because both scientists and clinicians often focus almost exclusively on the role of gray matter. This study is a reminder that connections between b

University of iowaUnited statesDaniel tranelJustin reberAaron boesEmily hendersonIowa neuroscience instituteWashington university in stIowa neuroscienceWashington universityIowa neurological registryபல்கலைக்கழகம் ஆஃப் ஐயுவாஒன்றுபட்டது மாநிலங்களில்எமிலி ஹென்டர்சன்ஐயுவா நரம்பியல் நிறுவனம்வாஷிங்டன் பல்கலைக்கழகம் இல் ஸ்டம்ப்