Arab Today, arab today electrical signatures of consciousness in dying brain
Last Updated : GMT 08:53:10
Arab Today, arab today
Arab Today, arab today

Electrical signatures of consciousness in dying brain

Arab Today, arab today

Arab Today, arab today Electrical signatures of consciousness in dying brain

Tehran - FNA

The \"near-death experience\" reported by cardiac arrest survivors worldwide may be grounded in science, according to research at the University of Michigan Health System. Whether and how the dying brain is capable of generating conscious activity has been vigorously debated. But in this week\'s PNAS Early Edition, a U-M study shows shortly after clinical death, in which the heart stops beating and blood stops flowing to the brain, rats display brain activity patterns characteristic of conscious perception. \"This study, performed in animals, is the first dealing with what happens to the neurophysiological state of the dying brain,\" says lead study author Jimo Borjigin, Ph.D., associate professor of molecular and integrative physiology and associate professor of neurology at the University of Michigan Medical School. \"It will form the foundation for future human studies investigating mental experiences occurring in the dying brain, including seeing light during cardiac arrest,\" she says. Approximately 20 percent of cardiac arrest survivors report having had a near-death experience during clinical death. These visions and perceptions have been called \"realer than real,\" according to previous research, but it remains unclear whether the brain is capable of such activity after cardiac arrest. \"We reasoned that if near-death experience stems from brain activity, neural correlates of consciousness should be identifiable in humans or animals even after the cessation of cerebral blood flow,\" she says. Researchers analyzed the recordings of brain activity called electroencephalograms (EEGs) from nine anesthetized rats undergoing experimentally induced cardiac arrest. Within the first 30 seconds after cardiac arrest, all of the rats displayed a widespread, transient surge of highly synchronized brain activity that had features associated with a highly aroused brain. Furthermore, the authors observed nearly identical patterns in the dying brains of rats undergoing asphyxiation. \"The prediction that we would find some signs of conscious activity in the brain during cardiac arrest was confirmed with the data,\" says Borjigin, who conceived the idea for the project in 2007 with study co-author neurologist Michael M. Wang, M.D., Ph.D., associate professor of neurology and associate professor of molecular and integrative physiology at the U-M. \"But, we were surprised by the high levels of activity,\" adds study senior author anesthesiologist George Mashour, M.D., Ph.D., assistant professor of anesthesiology and neurosurgery at the U-M. \" In fact, at near-death, many known electrical signatures of consciousness exceeded levels found in the waking state, suggesting that the brain is capable of well-organized electrical activity during the early stage of clinical death.­­­\" The brain is assumed to be inactive during cardiac arrest. However the neurophysiological state of the brain immediately following cardiac arrest had not been systemically investigated until now. The current study resulted from collaboration between the labs of Borjigin and Mashour, with U-M physicist UnCheol Lee, Ph.D., playing a critical role in analysis. \"This study tells us that reduction of oxygen or both oxygen and glucose during cardiac arrest can stimulate brain activity that is characteristic of conscious processing,\" says Borjigin. \"It also provides the first scientific framework for the near-death experiences reported by many cardiac arrest survivors.\"  

arabstoday
arabstoday

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today electrical signatures of consciousness in dying brain Arab Today, arab today electrical signatures of consciousness in dying brain

 



Arab Today, arab today

Name *

E-mail *

Comment Title*

Comment *

: Characters Left

Mandatory *

Terms of use

Publishing Terms: Not to offend the author, or to persons or sanctities or attacking religions or divine self. And stay away from sectarian and racial incitement and insults.

I agree with the Terms of Use

Security Code*

Arab Today, arab today electrical signatures of consciousness in dying brain Arab Today, arab today electrical signatures of consciousness in dying brain

 



Arab Today, arab today France defies terrorism through tourism

GMT 15:18 2017 Saturday ,20 May

France defies terrorism through tourism
Arab Today, arab today Zainab Fadel Oglu designs “Shakerin” mosque

GMT 12:13 2017 Thursday ,11 May

Zainab Fadel Oglu designs “Shakerin” mosque
View News in Arabic - Education: تقارير وملفات
Arab Today, arab today
Arab Today, arab today
Arab Today, arab today Mozambique's gas boom dream under threat

GMT 16:29 2017 Monday ,08 May

Mozambique's gas boom dream under threat
Arab Today, arab today Prepares to give stargazers an eyeful

GMT 13:38 2017 Monday ,06 March

Prepares to give stargazers an eyeful
Arab Today, arab today Jaguar displays XF Sportbrake line

GMT 14:36 2017 Monday ,08 May

Jaguar displays XF Sportbrake line
Arab Today, arab today BMW sees forecasts in reach

GMT 09:04 2017 Thursday ,04 May

BMW sees forecasts in reach
Arab Today, arab today Climate science: Bad news gets worse

GMT 08:48 2017 Saturday ,06 May

Climate science: Bad news gets worse
Arab Today, arab today
Arab Today, arab today
 
 Arab Today Facebook,arab today facebook  Arab Today Twitter,arab today twitter Arab Today Rss,arab today rss  Arab Today Youtube,arab today youtube  Arab Today Youtube,arab today youtube
arabstoday arabstoday arabstoday arabstoday
arabstoday arabstoday arabstoday
arabstoday
بناية النخيل - رأس النبع _ خلف السفارة الفرنسية _بيروت - لبنان
arabstoday, Arabstoday, Arabstoday