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.
White Hall Park Lake, Madison County, KY. I took a Monday vacation day off, with a goal of fishing some new places in central Kentucky. White Hall Park Lake, located in Northern Madison County, is part of the Fishing in Neighborhoods program with KDFWR. I had seen it online, and wanted to check it out.