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.
KWI Ribbon Cutting Ceremony Posted On: Tuesday, October 6, 2015 The newly opened Kentucky Welding Institute in Flemingsburg, KY held a ribbon cutting ceremony on Friday, October 2. Pictured above with US 6th District Congressman Andy Barr are the representatives from Bath County Schools who attended the ceremony.