Many of the necessary tools, you probably already have in your tool chest. You may be working on a new roof, but it is more likely that you will be shingling a roof that already has a layer or two of shingles. If there is more than one layer you will need to remove the old shingles.
Electroencephalography definition, an instrument for measuring and recording the electric activity of the brain. See more.
Electroencephalogram (EEG). EEG, which stands for electroencephalogram, is a diagnostic test used to detect abnormal brain activity that might indicate a serious medical condition. Through the use of electrodes carefully placed on the scalp, the EEG records the activity of thousands of neurons in the brain.