Blows To The Head Lead To Vision Loss

Blows To The Head Lead To Vision Loss.
As more probing focuses on the mar concussions can cause, scientists now information that even mild blows to the point might affect memory and thinking. In this latest study, strange helmets were used on football and ice hockey players during their seasons of play. None of the players were diagnosed with a concussion during the contemplation period, but the determined helmets recorded key data whenever the players received milder blows to the head penis 30 cm bokep perawan. "The accelerometers in the helmets allowed us to count up and quantify the force and frequency of impacts," said work author Dr Tom McAllister.

And "We pondering it might result in some interesting insights". The researchers found that the amplitude of change in the brain's white matter was greater in those who performed worse than expected on tests of thought and learning. White importance transports messages between different parts of the brain our website. "This suggests that concussion is not the only entity we need to pay notice to," said McAllister, chairman of the department of psychiatry at the Indiana University School of Medicine.

So "These athletes didn't have a concussion diagnosis in the year we conscious them and there is a subsample of them who are as the case may be more weak to impact. We need to learn more about how long these changes survive and whether the changes are permanent". The study was published online Dec 11, 2003 in the periodical Neurology continue. Concussions are softening traumatic brain injuries that occur from a sudden blow to the administrator or body.

Symptoms include headache, blurry vision and difficulty sleeping or theory clearly. Research on repetitive brain impacts not associated with diagnosed concussions is limited and contradictory, the researchers said. McAllister, who conducted the experiment with while affiliated with Dartmouth College, compared 80 concussion-free varsity football and ice hockey players wearing specialized helmets to 79 athletes in noncontact sports.

He evaluated them before and after the condition with imagination scans and culture and recollection tests. A total of 20 percent of the contact-sport players and 11 percent of the noncontact athletes performed worse on a evaluation of expressed learning and memory at the end of the season, a decline expected in less than 7 percent of a conventional population. Those performing worse exhibited more changes in the corpus callosum territory of the perception - a bundle of nerves connecting the left and right sides of the sagacity - than athletes who scored as predicted.

Dr Howard Derman, co-director of the Methodist Concussion Center in Houston, said he wasn't surprised by the findings. He said blows to the leadership without a reported concussion might cause capacity wound that doesn't originate symptoms.

Derman said future research on this topic would be illuminating if, with particularly equipped helmets, blood flow and pressure changes in the wit could be measured during repetitive head blows. "If you can paper that there are changes to the brain and there haven't been significant blows, it would be even more of a concern. We have to presuppose there is some cumulative effect, with multiple blows causing the problem. It's in the same way as bending a piece of plastic once - nothing happens discover more. But if you do it 40 times, you cripple the plastic".