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.
The electrodes are connected with wires to an instrument that amplifies â makes bigger â the brain waves and records them on computer equipment. Once the electrodes are in place, an EEG typically takes up to 60 minutes. If you need to sleep for the test, it may take up to three hours.he electrodes don't transmit any sensations. They just record your brain waves. Here are some things you can expect to happen during an EEG: 1  A technician measures your head and marks your scalp with a special pencil, to indicate where to attach the electrodes.