21.   Electrical impulses raced through circuits and along wires through the desert to the hulking apparatus on the tower.

22.   Electrical impulses are transmitted to the computer through probes inserted into the neuron.

23.   Electrolytes are minerals such as potassium and sodium that transmit electrical impulses through the body.

24.   Even appliances not designed to beep will chime in the chorus given the right electrical impulses.

25.   For one thing, they can sense heartbeats and movement through electrical impulse.

26.   He felt mild muscle contractions begin, and a slight tingling sensation as electrical impulses followed facial nerves into pain centers, effectively blocking the pain.

27.   His irregular heart rhythms triggered the pager, which began recording the patterns of electrical impulses traveling through his heart.

28.   In an analog recording such as an audiotape, the sound vibrations that hit a microphone are converted into electrical impulses.

29.   In his research, he probed microscopic-sized cockroach brains with microelectodes, finding the specific cells that produce electrical impulses.

30.   Instead of a straight line, with electrical impulses moving on a copper wire, Internet telephony takes a more circuitous and choppy route.