BVP models of nerve membrane (reply)

Impulses and Physiological States in Theoretical Models of Nerve Membrane.

Van der Pol's equation for a relaxation oscillator is generalized by the addition of terms to produce a pair of non-linear differential equations with either a stable singular point or a limit cycle. The resulting "BVP model" has two variables of state, representing excitability and refractoriness, and qualitatively resembles Bonhoeffer's theoretical model for the iron wire model of nerve. This...

Using Eggshell Membrane as Nerve Guide Channels in Peripheral Nerve Regeneration

Objective(s):  The aim of this study was to evaluate the final outcome of nerve regeneration across the eggsell membrane (ESM) tube conduit in comparison with autograft. Materials and Methods: Thirty adult male rats (250-300 g) were randomized into (1) ESM conduit, (2) autograft, and (3) sham surgery groups. The eggs submerged in 5% acetic acid. The decalcifying membranes were cut into four pie...

Reply to: The Furcal Nerve Revisited

They reported It is formed by ventral and dorsal rami of L1-L4 nerve roots with contribution from 12th thoracic nerve (i.e. subcostal nerve). After the anterior rami of the upper four lumbar nerves have supplied psoas and quadratus lumborum segmentally, they form the pleksus in the substance of psoas major.2,3 Juliana Farny et al. reported The lumbar plexus originated from the first four lumbar...

The Authors’ Reply

A PETSc Parallel BVP Code

Solutions to ordinary differential equations with boundary conditions (BVPs) are often approximated by a numerical method. Typically, this method involves setting up a large system of nonlinear equations for which the unknowns are discrete numerical approximations of the solution to the BVP. This nonlinear system has the potential to be large. Therefore, routines that parallelize both the gener...