N. D. Aberg, L. Rönnbäck, and P. S. Eriksson, Connexin43 mRNA and protein expression during postnatal development of defined brain regions, Developmental Brain Research, vol.115, issue.1, pp.97-101, 1999.
DOI : 10.1016/S0165-3806(99)00052-8

C. Agulhon, T. A. Fiacco, and K. D. Mccarthy, Hippocampal Short- and Long-Term Plasticity Are Not Modulated by Astrocyte Ca2+ Signaling, Science, vol.327, issue.5970, pp.1250-1254, 2010.
DOI : 10.1126/science.1184821

C. Agulhon, J. Petravicz, A. B. Mcmullen, E. J. Sweger, S. K. Minton et al., What Is the Role of Astrocyte Calcium in??Neurophysiology?, Neuron, vol.59, issue.6, pp.932-946, 2008.
DOI : 10.1016/j.neuron.2008.09.004

R. Albert and A. Barabási, Statistical mechanics of complex networks, Reviews of Modern Physics, vol.74, issue.1, pp.47-97, 2002.
DOI : 10.1103/RevModPhys.74.47

G. Arcuino, J. H. Lin, T. Takano, C. Liu, L. Jiang et al., Intercellular calcium signaling mediated by point-source burst release of ATP, Proceedings of the National Academy of Sciences, vol.99, issue.15, pp.9840-9845, 2002.
DOI : 10.1073/pnas.152588599

F. Aurenhammer, Voronoi diagrams---a survey of a fundamental geometric data structure, ACM Computing Surveys, vol.23, issue.3, pp.345-405, 1991.
DOI : 10.1145/116873.116880

M. Barthélemy, Spatial networks, Physics Reports, vol.499, issue.1-3, 2010.
DOI : 10.1016/j.physrep.2010.11.002

F. Blomstrand, N. D. Aberg, P. S. Eriksson, E. Hansson, R. et al., Extent of intercellular calcium wave propagation is related to gap junction permeability and level of connexin-43 expression in astrocytes in primary cultures from four brain regions, Neuroscience, vol.92, issue.1, pp.255-265, 1999.
DOI : 10.1016/S0306-4522(98)00738-6

S. Boccaletti, V. Latora, Y. Moreno, M. Chavez, and D. Hwang, Complex networks: Structure and dynamics, Physics Reports, vol.424, issue.4-5, pp.175-308, 2006.
DOI : 10.1016/j.physrep.2005.10.009

G. Carmignoto, Reciprocal communication systems between astrocytes and neurones, Progress in Neurobiology, vol.62, issue.6, pp.561-581, 2000.
DOI : 10.1016/S0301-0082(00)00029-0

D. Centola, V. M. Eguíluz, M. , and M. W. , Cascade dynamics of complex propagation, Physica A: Statistical Mechanics and its Applications, vol.374, issue.1, 2007.
DOI : 10.1016/j.physa.2006.06.018

A. Charles, Intercellular calcium waves in glia, Glia, vol.69, issue.1, pp.39-49, 1998.
DOI : 10.1002/(SICI)1098-1136(199809)24:1<39::AID-GLIA5>3.0.CO;2-W

A. C. Charles and C. Giaume, Intercellular calcium waves in astrocytes: underlying mechanisms and functional significance, Tripartite Synapses: Synaptic Transmission With Glia, pp.110-126, 2002.

C. C. Chow and N. Kopell, Dynamics of Spiking Neurons with Electrical Coupling, Neural Computation, vol.18, issue.7, pp.1643-1678, 2000.
DOI : 10.1023/A:1008841325921

B. W. Connors and M. A. Long, ELECTRICAL SYNAPSES IN THE MAMMALIAN BRAIN, Annual Review of Neuroscience, vol.27, issue.1, 2004.
DOI : 10.1146/annurev.neuro.26.041002.131128

L. D. Costa and L. E. Da-rocha, A generalized approach to complex networks, The European Physical Journal B, vol.50, issue.1-2, pp.237-242, 2006.
DOI : 10.1140/epjb/e2006-00107-0

R. Ambrosio, J. Wenzel, P. A. Schwartzkroin, G. M. Mckhann, and D. Janigro, Functional specialization and topographic segregation of hippocampal astrocytes, J. Neurosci, vol.18, pp.4425-4438, 1998.

J. W. Dani, A. Chernjavsky, and S. J. Smith, Neuronal activity triggers calcium waves in hippocampal astrocyte networks, Neuron, vol.8, issue.3, pp.429-440, 1992.
DOI : 10.1016/0896-6273(92)90271-E

D. Pittà, M. Volman, V. Berry, H. Parpura, V. Liaudet et al., Computational quest for understanding the role of astrocyte signaling in synaptic transmission and plasticity, Front. Comput. Neurosci, 2012.

P. S. Dodds and D. J. Watts, Universal Behavior in a Generalized Model of Contagion, Physical Review Letters, vol.92, issue.21, 2004.
DOI : 10.1103/PhysRevLett.92.218701

J. Dyhrfjeld-johnsen, V. Santhakumar, R. J. Morgan, R. Huerta, L. Tsimring et al., Topological Determinants of Epileptogenesis in Large-Scale Structural and Functional Models of the Dentate Gyrus Derived From Experimental Data, Journal of Neurophysiology, vol.97, issue.2, pp.1566-1587, 2006.
DOI : 10.1152/jn.00950.2006

S. Feldt, J. X. Wang, E. Shtrahman, R. Dzakpasu, E. Olariu et al., Functional clustering in hippocampal cultures: relating network structure and dynamics, Physical Biology, vol.7, issue.4, pp.46004-46014, 2010.
DOI : 10.1088/1478-3975/7/4/046004

T. A. Fiacco and K. D. Mccarthy, Intracellular Astrocyte Calcium Waves In Situ Increase the Frequency of Spontaneous AMPA Receptor Currents in CA1 Pyramidal Neurons, Journal of Neuroscience, vol.24, issue.3, pp.722-732, 2004.
DOI : 10.1523/JNEUROSCI.2859-03.2004

T. A. Fiacco and K. D. Mccarthy, Astrocyte calcium elevations: Properties, propagation, and effects on brain signaling, Glia, vol.16, issue.7, pp.676-690, 2006.
DOI : 10.1002/glia.20396

C. Giaume and M. Theis, Pharmacological and genetic approaches to study connexin-mediated channels in glial cells of the central nervous system, Brain Research Reviews, vol.63, issue.1-2, pp.160-176, 2010.
DOI : 10.1016/j.brainresrev.2009.11.005

C. Giaume and L. Venance, Intercellular calcium signaling and gap junctional communication in astrocytes, Glia, vol.25, issue.1, pp.50-64, 1998.
DOI : 10.1002/(SICI)1098-1136(199809)24:1<50::AID-GLIA6>3.0.CO;2-4

M. Goldberg, M. De-pittà, V. Volman, H. Berry, B. et al., Nonlinear Gap Junctions Enable Long-Distance Propagation of Pulsating Calcium Waves in Astrocyte Networks, PLoS Computational Biology, vol.7, issue.1, 2010.
DOI : 10.1371/journal.pcbi.1000909.s009

URL : https://hal.archives-ouvertes.fr/inria-00575656

D. Golomb, H. , and D. , The Number of Synaptic Inputs and the Synchrony of Large, Sparse Neuronal Networks, Neural Computation, vol.16, issue.5, pp.1095-1139, 2000.
DOI : 10.1038/373612a0

P. B. Guthrie, J. Knappenberger, M. Segal, M. V. Bennett, A. C. Charles et al., ATP released from astrocytes mediates glial calcium waves, J. Neurosci, vol.19, pp.520-528, 1999.

B. Haas, C. G. Schipke, O. Peters, G. Sã?-uhl, K. Willecke et al., Activity-dependent ATP-waves in the Mouse Neocortex are Independent from Astrocytic Calcium Waves, Cerebral Cortex, vol.16, issue.2, pp.237-246, 2006.
DOI : 10.1093/cercor/bhi101

P. G. Haydon, Glia: listening and talking to the synapse, Nature Reviews Neuroscience, vol.2, issue.3, pp.185-193, 2001.
DOI : 10.1038/35058528

P. G. Haydon, C. , and G. , Astrocyte Control of Synaptic Transmission and Neurovascular Coupling, Physiological Reviews, vol.86, issue.3, 2005.
DOI : 10.1152/physrev.00049.2005

H. Hirase, L. Qian, P. Barthó, and G. Buzsáki, Calcium Dynamics of Cortical Astrocytic Networks In Vivo, PLoS Biology, vol.6, issue.4, 2004.
DOI : 10.1371/journal.pbio.0020096.sv006

T. Höfer, L. Venance, and C. Giaume, Control and plasticity of intercellular calcium waves in astrocytes: a modeling approach, J. Neurosci, vol.22, pp.4850-4859, 2002.

T. M. Hoogland, B. Kuhn, W. Göbel, W. Huang, J. Nakai et al., Radially expanding transglial calcium waves in the intact cerebellum, Proceedings of the National Academy of Sciences, vol.106, issue.9, pp.3496-3501, 2009.
DOI : 10.1073/pnas.0809269106

V. Houades, A. Koulakoff, P. Ezan, I. Seif, and C. Giaume, Gap Junction-Mediated Astrocytic Networks in the Mouse Barrel Cortex, Journal of Neuroscience, vol.28, issue.20, pp.5207-5217, 2008.
DOI : 10.1523/JNEUROSCI.5100-07.2008

V. Houades, N. Rouach, P. Ezan, F. Kirchhoff, A. Koulakoff et al., Shapes of astrocyte networks in the juvenile brain, Neuron Glia Biology, vol.2, issue.01, pp.3-14, 1017.
DOI : 10.1017/S1740925X06000081

M. Hütt, M. K. Jain, C. C. Hilgetag, and A. Lesne, Stochastic resonance in discrete excitable dynamics on graphs, Chaos, Solitons & Fractals, vol.45, issue.5, pp.611-618, 2012.
DOI : 10.1016/j.chaos.2011.12.011

D. A. Iacobas, S. O. Suadicani, D. C. Spray, and E. Scemes, A Stochastic Two-Dimensional Model of Intercellular Ca2+ Wave Spread in Glia, Biophysical Journal, vol.90, issue.1, pp.24-41, 2006.
DOI : 10.1529/biophysj.105.064378

V. Kaczmarska, J. Nekovee, and M. , Spread of information and infection on finite random networks, Frontiers in Computational Neuroscience www.frontiersin.org Isham, Phys. Rev, 2011.

S. Iwabuchi, K. Kawahara, K. Makisaka, H. H. Sato, R. et al., Photolytic flash-induced intercellular calcium waves using caged calcium ionophore in cultured astrocytes from newborn rats, Experimental Brain Research, vol.146, issue.1, pp.103-116, 2002.
DOI : 10.1007/s00221-002-1149-y

A. Koulakoff, P. Ezan, and C. Giaume, Neurons control the expression of connexin 30 and connexin 43 in mouse cortical astrocytes, Glia, vol.66, issue.(Part 2), pp.1299-1311, 2008.
DOI : 10.1002/glia.20698

N. Kuga, T. Sasaki, Y. Takahara, N. Matsuki, and Y. Ikegaya, Large-Scale Calcium Waves Traveling through Astrocytic Networks In Vivo, Journal of Neuroscience, vol.31, issue.7, pp.2607-2614, 2011.
DOI : 10.1523/JNEUROSCI.5319-10.2011

A. Kunze, M. R. Congreso, C. Hartmann, A. Wallraff-beck, K. Hüttmann et al., Connexin expression by radial glia-like cells is required for neurogenesis in the adult dentate gyrus, Proceedings of the National Academy of Sciences, vol.106, issue.27, pp.11336-11341, 2009.
DOI : 10.1073/pnas.0813160106

A. Lerchner, C. Ursta, J. Hertz, M. Ahmadi, P. Ruffiot et al., Response Variability in Balanced Cortical Networks, Neural Computation, vol.41, issue.911, pp.634-659, 2006.
DOI : 10.1007/BF00275002

T. J. Lewis and J. Rinzel, Dynamics of spiking neurons connected by both inhibitory and electrical coupling, Journal of Computational Neuroscience, vol.14, issue.3, pp.283-309, 2003.
DOI : 10.1023/A:1023265027714

S. Luccioli, S. Olmi, A. Politi, and A. Torcini, Collective Dynamics in Sparse Networks, Physical Review Letters, vol.109, issue.13, 2012.
DOI : 10.1103/PhysRevLett.109.138103

R. J. Montoro, Y. , and R. , Gap junctions in developing neocortex: a review, Brain Research Reviews, vol.47, issue.1-3, 2004.
DOI : 10.1016/j.brainresrev.2004.06.009

M. Müller-linow, C. C. Hilgetag, and M. Hütt, Organization of Excitable Dynamics in Hierarchical Biological Networks, PLoS Computational Biology, vol.12, issue.9, 2008.
DOI : 10.1371/journal.pcbi.1000190.s006

M. Müller-linow, C. Marr, and M. Hütt, Topology regulates the distribution pattern of excitations in excitable dynamics on graphs, Physical Review E, vol.74, issue.1, 2006.
DOI : 10.1103/PhysRevE.74.016112

J. I. Nagy and J. E. Rash, Connexins and gap junctions of astrocytes and oligodendrocytes in the CNS, Brain Research Reviews, vol.32, issue.1, pp.29-44, 2000.
DOI : 10.1016/S0165-0173(99)00066-1

M. Nedergaard, B. R. Ransom, and S. A. Goldman, New roles for astrocytes: Redefining the functional architecture of the brain, Trends in Neurosciences, vol.26, issue.10, pp.523-530, 2003.
DOI : 10.1016/j.tins.2003.08.008

E. A. Newman, Propagation of intercellular calcium waves in retinal astrocytes and müller cells, J. Neurosci, vol.21, pp.2215-2223, 2001.

A. Nimmerjahn, Astrocytes going live: advances and challenges, The Journal of Physiology, vol.6, issue.8, pp.1639-1647167171, 2008.
DOI : 10.1113/jphysiol.2008.167171

S. Olmi, R. Livi, A. Politi, and A. Torcini, Collective oscillations in disordered neural networks. P h y s .R e v, 2010.

J. A. Orellana, A. D. Martinez, and M. A. Retamal, Gap junction channels and hemichannels in the CNS: Regulation by signaling molecules, Neuropharmacology, vol.75, 2013.
DOI : 10.1016/j.neuropharm.2013.02.020

U. Pannasch, R. , and N. , Emerging role for astroglial networks in information processing: from synapse to behavior, Trends in Neurosciences, vol.36, issue.7, pp.405-417, 2013.
DOI : 10.1016/j.tins.2013.04.004

H. R. Parri, T. M. Gould, C. , and V. , Spontaneous astrocytic Ca 2+ oscillations in situ drive NMDAR-mediated neuronal excitation, Nature Neuroscience, vol.4, issue.8, pp.803-812, 1038.
DOI : 10.1038/90507

L. Pasti, A. Volterra, T. Pozzan, C. , and G. , Intracellular calcium oscillations in astrocytes: a highly plastic, bidirectional form of communication between neurons and astrocytes in situ, J. Neurosci, vol.17, pp.7817-7830, 1997.

G. Perea, M. Navarrete, and A. Araque, Tripartite synapses: astrocytes process and control synaptic information, Trends in Neurosciences, vol.32, issue.8, pp.421-431, 2009.
DOI : 10.1016/j.tins.2009.05.001

J. L. Peters, B. J. Earnest, R. B. Tjalkens, V. M. Cassone, and M. J. Zoran, Modulation of intercellular calcium signaling by melatonin in avian and mammalian astrocytes is brain region-specific, The Journal of Comparative Neurology, vol.9, issue.3, pp.370-380, 2005.
DOI : 10.1002/cne.20779

L. Rela, A. Bordey, G. , and C. A. , Olfactory ensheathing cell membrane properties are shaped by connectivity, Glia, vol.24, issue.Pt 3, pp.665-678, 2010.
DOI : 10.1002/glia.20953

URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2830329

N. Rouach, E. Avignone, W. Même, A. Koulakoff, L. Venance et al., Gap junctions and connexin expression in the normal and pathological central nervous system, Biology of the Cell, vol.94, issue.7-8, pp.457-475, 2002.
DOI : 10.1016/S0248-4900(02)00016-3

N. Rouach, J. Glowinski, and C. Giaume, Activity-Dependent Neuronal Control of Gap-Junctional Communication in Astrocytes, The Journal of Cell Biology, vol.78, issue.7, pp.1513-1526, 2000.
DOI : 10.1046/j.1460-9568.1999.00697.x

L. Roux, K. Benchenane, J. D. Rothstein, G. Bonvento, and C. Giaume, Plasticity of astroglial networks in olfactory glomeruli, Proceedings of the National Academy of Sciences, vol.108, issue.45, pp.18442-18446, 2011.
DOI : 10.1073/pnas.1107386108

A. Roxin, The Role of Degree Distribution in Shaping the Dynamics in Networks of Sparsely Connected Spiking Neurons, Frontiers in Computational Neuroscience, vol.5, 2011.
DOI : 10.3389/fncom.2011.00008

T. Sasaki, N. Kuga, S. Namiki, N. Matsuki, Y. E. Ikegaya et al., Locally Synchronized Astrocytes, Cerebral Cortex, vol.21, issue.8, pp.1889-1900, 2006.
DOI : 10.1093/cercor/bhq256

URL : http://cercor.oxfordjournals.org/cgi/content/short/21/8/1889

E. Scemes and D. C. Spray, Extracellular K+ and Astrocyte Signaling via Connexin and Pannexin Channels, Neurochemical Research, vol.56, issue.2, pp.2310-2316, 2012.
DOI : 10.1007/s11064-012-0759-4

URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3489984

E. Scemes, S. O. Suadicani, and D. C. Spray, Intercellular communication in spinal cord astrocytes: fine tuning between gap junctions and P2 nucleotide receptors in calcium wave propagation, J. Neurosci, vol.20, pp.1435-1445, 2000.

C. Schipke, B. Haas, and H. Kettenmann, Astrocytes Discriminate and Selectively Respond to the Activity of a Subpopulation of Neurons within the Barrel Cortex, Cerebral Cortex, vol.18, issue.10, pp.2450-2459, 2008.
DOI : 10.1093/cercor/bhn009

C. G. Schipke, C. Boucsein, C. Ohlemeyer, F. Kirchhoff, H. G. Kettenmann et al., Astrocyte Ca 2+ waves trigger responses in microglial cells in brain slices Expression and functions of neuronal gap junctions Gap junction channels coordinate the propagation of intercellular Ca 2+ signals generated by P2Y receptor activation, FASEB J. Nat. Rev. Neurosci. Glia, vol.16, issue.48, pp.255-257, 2002.

J. Sul, G. Orosz, R. S. Givens, H. , P. G. Mcconnell et al., Astrocytic Connectivity in the Hippocampus, Neuron Glia Biology, vol.1, issue.01, pp.3-11, 2004.
DOI : 10.1017/S1740925X04000031

L. Tattini, S. Olmi, and A. Torcini, Coherent periodic activity in excitatory erdös-renyi neural networks: the role of network connectivity, Chaos, vol.22, 2012.

M. Theis and C. Giaume, Connexin-based intercellular communication and astrocyte heterogeneity, Brain Research, vol.1487, pp.88-98, 2012.
DOI : 10.1016/j.brainres.2012.06.045

G. F. Tian, T. Takano, J. H. Lin, X. Wang, L. Bekar et al., Imaging of cortical astrocytes using 2-photon laser scanning microscopy in the intact mouse brain, Advanced Drug Delivery Reviews, vol.58, issue.7, pp.773-787, 2006.
DOI : 10.1016/j.addr.2006.07.001

G. G. Turrigiano, The Self-Tuning Neuron: Synaptic Scaling of Excitatory Synapses, Cell, vol.135, issue.3, pp.422-435, 2008.
DOI : 10.1016/j.cell.2008.10.008

C. Van-vreeswijk and H. Sompolinsky, Chaos in Neuronal Networks with Balanced Excitatory and Inhibitory Activity, Science, vol.274, issue.5293, 1996.
DOI : 10.1126/science.274.5293.1724

C. Van-vreeswijk and H. Sompolinsky, Chaotic Balanced State in a Model of Cortical Circuits, Neural Computation, vol.13, issue.6, pp.1321-1371, 1998.
DOI : 10.1016/S0006-3495(72)86068-5

L. Venance, N. Stella, J. Glowinski, and C. Giaume, Mechanism involved in initiation and propagation of receptor-induced intercellular calcium signaling in cultured rat astrocytes, J. Neurosci, vol.17, 1981.

V. Volman and M. Perc, Fast random rewiring and strong connectivity impair subthreshold signal detection in excitable networks, New Journal of Physics, vol.12, issue.4, p.43013, 2010.
DOI : 10.1088/1367-2630/12/4/043013

V. Volman, M. Perc, and M. Bazhenov, Gap Junctions and Epileptic Seizures ??? Two Sides of the Same Coin?, PLoS ONE, vol.22, issue.5, 2011.
DOI : 10.1371/journal.pone.0020572.g007

A. Volterra and J. Meldolesi, Astrocytes, from brain glue to communication elements: the revolution continues, Nature Reviews Neuroscience, vol.21, issue.8, pp.626-640, 2005.
DOI : 10.1038/35077000

S. S. Wang, A. A. Alousi, and S. H. Thompson, The lifetime of inositol 1,4,5-trisphosphate in single cells, The Journal of General Physiology, vol.105, issue.1, pp.149-171, 1995.
DOI : 10.1085/jgp.105.1.149

D. J. Watts, Small Worlds: The Dynamics of Ne Between Order and Randomness, pp.33-36, 1999.

T. A. Weissman, P. A. Riquelme, L. Ivic, A. C. Flint, and A. R. Kriegstein, Calcium Waves Propagate through Radial Glial Cells and Modulate Proliferation in the Developing Neocortex, Neuron, vol.43, issue.5, pp.647-661, 2004.
DOI : 10.1016/j.neuron.2004.08.015

G. Xu, W. Wang, H. K. Kimelberg, and M. Zhou, Electrical coupling of astrocytes in rat hippocampal slices under physiological and simulated ischemic conditions, Glia, vol.29, issue.2, Part 1, pp.481-493, 2010.
DOI : 10.1002/glia.20939

D. H. Zanette, Dynamics of rumor propagation on small-world networks, Physical Review E, vol.65, issue.4, 2002.
DOI : 10.1103/PhysRevE.65.041908

M. Zonta, C. , and G. , Calcium oscillations encoding neuron-to-astrocyte communication, Journal of Physiology-Paris, vol.96, issue.3-4, pp.193-198, 2002.
DOI : 10.1016/S0928-4257(02)00006-2

R. Zorec, A. Araque, G. Carmignoto, P. Haydon, A. Verkhratsky et al., as a Signalling Route, ASN Neuro, vol.279, issue.1, pp.80-90, 2012.
DOI : 10.1038/nn980