ABSTRACT

A first-order approximation to the above could plausibly be the following equation:

D = (Xl (RH - Re) + dl (10)

where d1 is a baseline value (it is possible for d1 to be zero). The magnitude of D is thus proportional to the strength of the signal along the MT. The parameter Ul results from structural factors and relationships that depend on the actual underlying mechanisms. Plausible biophysical mechanisms for the initiation of the MT signal are covered later. Equation (10) implements equation (5), as needed.