F wave. 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 (i.e., portions of nerves near the spinal cord).
The success of the first permanent bobsleigh, luge, and skeleton track in KÃ¶nigssee, West Germany, completed in 1968 and first used for the world luge championships the following year, also played a factor. [7] [8] In 1969, it was decided to construct a permanent facility in Oberhof. [9]
Tom Sims, founder of Sims Snowboards, took it upon himself to organize the first World Championship halfpipe competition in 1983. The sport continued to gain popularity, and the first World Cup of snowboarding was held in Austria in 1985. Back in these times, snowboarding was not allowed at most ski resorts. If it was, it was only permitted on separate slopes. However, pioneers continued to push the envelope and advocate for the sport.