Barack and Michelle Obama did not adopt either of their two daughters. Perhaps you are thinking of Mr. Obama's 2008 opponent, John McCain-- he and his wife Cindy did adopt a lâ¦ittle girl from Bangladesh.
The test itself will take about 30-60 minutes. Placing the electrodes usually takes 20 minutes, but can take up to an hour, so the entire procedure may take about one to 2 hours. If you have an ambulatory EEG, brain activity is recorded for 24 hours or more.
EEG (electroencephalogram) a recording of the electrical changes occurring in the brain, produced by placing electrodes on the scalp and amplifying the electrical potential developed. The EEG shows three main types of wave called alpha, beta and delta, that differ in their rates of production.