In neuroscience, an F wave is the second of two voltage changes observed after electrical stimulation is applied to the skin surface above the distal region of a nerve. F waves are often used to measure nerve conduction velocity, and are particularly useful for evaluating conduction problems in the proximal region of nerves. It's called F wave because it was initially recorded in the foot muscles.
Logan Paul. Logan Alexander Paul (born April 1, 1995) is an American social media entertainer and actor. He first gained fame through videos shared on the internet video service Vine. He has a youtube channel called Logan Paul Vlogs and TheOfficialLoganPaul.
Caleb Logan L. was born on July 13, 2002. Caleb was part of the YouTube vlogging channel Bratayley, which at the time had over 2 million subscribers. He loved to play baseball and was good at it. His nickname in baseball was Wheels.