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.
Kasey Cunningham added 2 new photos â at Marshall County High School. Â· January 24 at 9:25am Â· Benton, KY Â· Community members tell me they're devastated by the loss of these two 15 year-old Marshall County High School students.