After returning to Hong Kong, I immediately contacted a doctor and informed him about my situation in Canada. He arranged for me to undergo a flash test, which involved stimulating my eyes with different flashes of light and testing my reactions to various sounds to see if I experienced any discomfort. The results of that test were normal.
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Later on, I consulted a doctor whom I had been seeing for many years and shared with him the details of my year abroad. The doctor suggested that I undergo a 24-hour EEG (electroencephalogram) brainwave test and referred me to another hospital for the procedure.
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The EEG test records the electrical activity produced by neurons in the brain to detect any abnormal patterns. Before the test, I was instructed to wash my hair and sleep as I normally would the day before, avoiding going to bed too late and refraining from taking sleeping pills, drinking coffee, or tea.
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On the day of the test, I had breakfast before going to the hospital. Upon arrival, I was led into the examination room, which was similar to a hospital ward. The hospital required a family member to accompany me. A nurse tied up my hair and applied disinfectant before placing numerous electrodes on my scalp. Then, the equipment was activated.
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Initially, I was instructed to perform actions such as deep breathing and opening or closing my eyes as part of preliminary tests. They also used light to stimulate my eyes. This testing phase lasted for about an hour, and if I didn't experience any discomfort, the examination could proceed.
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Afterward, I was advised to rest as much as possible and avoid unnecessary movements, maintaining a calm state of mind.
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