Figure 1. Frequency coding in the nervous system: Threshold stimulus. 1  If a threshold stimulus is applied to a neuron and maintained (top, red trace), action potentials occur at a maximum frequency that is limited by the sum of the absolute and relative refractory periods (bottom, blue trace).
Phyllis, Kentucky. Phyllis is an unincorporated community located in Pike County, Kentucky, United States. U.S. Geological Survey Geographic Names Information System: Phyllis, Kentucky.
Lynch, KY. Online Offers. Lynch is a city in Harlan County, Kentucky, United States. It was plotted in 1917 by the US Coal and Coke Company (a subsidiary of U.S. Steel) as a company town to house workers at the company's nearby coal mines. It was named for the then head of the company, Thomas Lynch.