solidot新版网站常见问题,请点击这里查看。
消息
本文已被查看3124次
A biophysical model explains the spontaneous bursting behavior in the developing retina. (arXiv:1711.09199v1 [q-bio.NC] CROSS LISTED)
来源于:arXiv
During early development, waves of activity propagate across the retina and
play a key role in the proper wiring of the early visual system. During a
particular phase of the retina development (stage II) these waves are triggered
by a transient network of neurons called Starburst Amacrine Cells (SACs)
showing a bursting activity which disappears upon further maturation. The
underlying mechanisms of the spontaneous bursting and the transient
excitability of immature SACs are not completely clear yet. While several
models have tried to reproduce retinal waves, none of them is able to mimic the
rhythmic autonomous bursting of individual SACs and understand how these cells
change their intrinsic properties during development. Here, we introduce a
mathematical model, grounded on biophysics, which enables us to reproduce the
bursting activity of SACs and to propose a plausible, generic and robust,
mechanism that generates it. Based on a bifurcation analysis we exhibit a few
biophysical param 查看全文>>