  We investigate localized wave solutions in a network of Hindmarsh-Rose neural
model taking into account the long-range diffusive couplings. We show by a
specific analytical technique that the model equations in the infrared limit
(wave number $k\rightarrow 0$) can be governed by the complex fractional
Ginzburg-Landau (CFGL) equation. According to the stiffness of the system, we
propose both the semi and the linearly implicit Riesz fractional
finite-difference schemes to solve efficiently the CFGL equation. The obtained
fractional numerical solutions for the nerve impulse reveal localized short
impulse properties. We also show the equivalence between the continuous CFGL
and the discrete Hindmarsh-Rose models for relatively large network.
