Title
Dentritic [Ca2+] Dynamics in the Presence of Immobile Buffers and of Dyes
Abstract
We present a reaction-diffusion model of [Ca2+] regulation in neuronal dendrites, in the presence of high-affinity indicator and endogenous buffers. We investigate the applicability of equilibration assumptions for a slow, NMDAR-like source, present an analytical solution to the system in linear approximation, and discuss a possible scheme for extending this approximation’s applicability. We obtain data on spatial Ca2+ spread that suggest that dendritic Ca2+ signals of NMDAR origin can be localized to 2–3 μm with no need for differential buffering or spines. Finally, we show that the difficulties presented by dye saturation may be circumvented by using fluorescence tails as a probe of [Ca2+] peaks.
Year
DOI
Venue
1999
10.1007/BFb0098159
IWANN (1)
Keywords
Field
DocType
immobile buffers,linear approximation,reaction diffusion,analytic solution
Linear approximation,Discrete mathematics,Chemical physics,Saturation (chemistry),Computer science,Fluorescence,Biological modeling
Conference
Volume
ISSN
ISBN
1606
0302-9743
3-540-66069-0
Citations 
PageRank 
References 
0
0.34
3
Authors
3
Name
Order
Citations
PageRank
Miguel Maravall151.58
Zachary F. Mainen213047.99
Karel Svoboda39210.18