“But it certainly won’t be the last study,” says Erik Magnus Berntsen, a neuroradiologist at St. The study is the first from the 7 Tesla MR centre in Trondheim. Olavs Hospital and kidney researcher at NTNU. “The study opens up new opportunities for exciting memory research,” says Thanh P. “With a normal MRI, we would not have obtained such clear findings,” Unsgård says. The new MRI machine detected the typical changes in the brain in twice as many patients, compared to when they were examined with normal MRI machines. The patients were examined with the 7 Tesla MRI between 13 and 23 hours after their memory disappeared. Olavs Hospital with transient global amnesia. The researchers examined thirteen patients who had been admitted to St. What the researchers and doctors were looking for were tiny changes in an area of the brain called the hippocampus, where memory is found. (Photo: Siemens Healthineers) Found changes in far more people Researchers are now using a 7 Tesla MRI, which provides images with much better resolution than normal MRI machines. Research shows that one in eight people will actually have a recurrence of TGA. The same applies if you have reached the age of 50. If you have migraines, the risk of TGA is much higher. One common factor for the vast majority of those afflicted is mental or physical stress.īut temporary memory loss – with the clinical name transient global amnesia (TGA) – can also be caused by oedema or epilepsy. Giving a public speech that evokes a lot of emotion, like at a wedding. Conflict at the workplace or with a partner. Why did it happen? Could it happen again?ĭoctors have had a hard time figuring out the cause of such episodes, too. But the fright of it doesn’t pass quite so easily. Within a day, everyone begins to make new memories again. Everything that happened in the last few hours is completely blank. You can remember who you are and where you live, but not that just a little while ago you saw the same doctor and asked exactly the same questions. (Photo: Kari Williamson/NTNU) Migraine increases risk From left: Erik Magnus Berntsen, Runa Geirmundsdatter Unsgård and Thanh P. This is the first time in Norway that research has been conducted over time on a group of patients with this condition.
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