The Patterns of Electrical Activity (EEG) in the Brain Typically

Short Answer

The patterns of electrical activity (EEG) in the brain typically change during old age, and the conduction speed of the impulses along neuronal fibres throughout the body also slows down. This is owing to a reduced rate of production of certain biochemical substances involved in _____________ , including serotonin, glucamate, dopamine and acetylcholine (Rosenzweig, Breedlove and Leiman, 2002).