Though computers are our closest analogue when it comes to discussing the human brain, increasing processing power in the brain is not as simple as plugging in a stick of RAM. When neurologists and neuroscientists talk about the processing speed of the brain, they’re referring to the rate at which a human can take in a new piece of information, reach a judgment about it, and formulate a response. Based on this definition, the key to improving processing speed lies in making stronger connections in the brain, which allow brain signals to travel at higher speeds. Though most of this type of hardwiring of the brain occurs during childhood, you can still take action to sustain and even potential improve your brain’s processing speed.What we think of as the brain’s processing speed is actually the ways in which electrical signals travel across axons, which are essentially the wiring connecting different parts of the brain. The white matter of the brain is made up of all of this wiring, and it is fed by blood vessels, meaning that vascular problems such as diabetes and high blood pressure can starve the axons of much-needed oxygen and glucose.