B. D. Clark, E. M. Goldberg, and B. Rudy, Electrogenic Tuning of the Axon Initial Segment, The Neuroscientist, vol.12, issue.6, pp.651-66810, 2009.
DOI : 10.1083/jcb.143.5.1295

D. Debanne, Information processing in the axon, Nature Reviews Neuroscience, vol.81, issue.4, pp.304-31615034555, 2004.
DOI : 10.1152/jn.1999.81.3.1412

Y. Grossman, I. Parnas, and M. E. Spira, Differential conduction block in branches of a bifurcating axon., The Journal of Physiology, vol.295, issue.1
DOI : 10.1113/jphysiol.1979.sp012969

D. Debanne, N. C. Guérineau, B. H. Gähwiler, and S. M. Thompson, Action-potential propagation gated by an axonal IA-like K+ conductance in hippocampus, Nature, vol.18, issue.6648, pp.286-289, 1997.
DOI : 10.1016/0166-2236(95)80031-V

S. A. Baccus, Synaptic facilitation by reflected action potentials: Enhancement of transmission when nerve impulses reverse direction at axon branch points, Proceedings of the National Academy of Sciences, vol.167, issue.1, pp.8345-83509653189, 1998.
DOI : 10.1038/382363a0

J. R. Geiger and P. Jonas, Dynamic Control of Presynaptic Ca2+ Inflow by Fast-Inactivating K+ Channels in Hippocampal Mossy Fiber Boutons, Neuron, vol.28, issue.3, pp.927-93910, 2000.
DOI : 10.1016/S0896-6273(00)00164-1

T. Shimahara and B. Peretz, Soma potential of an interneurone controls transmitter release in a monosynaptic pathway in Aplysia, Nature, vol.192, issue.5658, pp.158-16025388, 1978.
DOI : 10.1113/jphysiol.1973.sp010247

H. Alle and J. R. Geiger, Combined Analog and Action Potential Coding in Hippocampal Mossy Fibers, Science, vol.311, issue.5765, pp.1290-129316513983, 2006.
DOI : 10.1126/science.1119055
URL : http://mail.cs.unm.edu/pipermail/comp-cog-neuro/attachments/20060303/aa878709/alle2006-0001.pdf

Y. Shu, A. Hasenstaub, A. Duque, Y. Yu, and D. A. Mccormick, Modulation of intracortical synaptic potentials by presynaptic somatic membrane potential, Nature, vol.311, issue.7094, pp.761-765, 2006.
DOI : 10.1126/science.1119055

M. H. Kole, J. J. Letzkus, and G. J. Stuart, Axon Initial Segment Kv1 Channels Control Axonal Action Potential Waveform and Synaptic Efficacy, Neuron, vol.55, issue.4, pp.633-647, 2007.
DOI : 10.1016/j.neuron.2007.07.031
URL : https://doi.org/10.1016/j.neuron.2007.07.031

J. M. Christie, D. N. Chiu, and C. E. Jahr, Ca2+-dependent enhancement of release by subthreshold somatic depolarization, Nature Neuroscience, vol.120, issue.1, pp.62-6821170054, 2011.
DOI : 10.1016/0165-0270(91)90017-T

B. Clark and M. Häusser, Neural Coding: Hybrid Analog and Digital Signalling in Axons, Current Biology, vol.16, issue.15, pp.585-58816890514, 2006.
DOI : 10.1016/j.cub.2006.07.007
URL : https://doi.org/10.1016/j.cub.2006.07.007

G. B. Awatramani, G. D. Price, and L. O. , Modulation of Transmitter Release by Presynaptic Resting Potential and Background Calcium Levels, Neuron, vol.48, issue.1, pp.109-121, 2005.
DOI : 10.1016/j.neuron.2005.08.038

Y. Yu, C. Maureira, X. Liu, and D. Mccormick, P/Q and N Channels Control Baseline and Spike-Triggered Calcium Levels in Neocortical Axons and Synaptic Boutons, Journal of Neuroscience, vol.30, issue.35, pp.11858-11869, 2010.
DOI : 10.1523/JNEUROSCI.2651-10.2010
URL : http://www.jneurosci.org/content/jneuro/30/35/11858.full.pdf

T. Sasaki, N. Matsuki, and Y. Ikegaya, Action-Potential Modulation During Axonal Conduction, Science, vol.463, issue.7278, pp.599-60121292979, 2011.
DOI : 10.1038/nature08673

A. Araque, V. Parpura, R. P. Sanzgiri, and P. G. Haydon, Tripartite synapses: glia, the unacknowledged partner, Trends in Neurosciences, vol.22, issue.5, pp.208-21510, 1999.
DOI : 10.1016/S0166-2236(98)01349-6

D. T. Theodosis, D. A. Poulain, and S. H. Oliet, Activity-Dependent Structural and Functional Plasticity of Astrocyte-Neuron Interactions, Physiological Reviews, vol.88, issue.3, pp.983-100818626065, 2007.
DOI : 10.1038/ncb1620

Y. Hediger, J. P. Wang, D. F. Schielke, and . Welty, Knockout of glutamate transporters reveals a major role for astroglial transport in excitotoxicity and clearance of glutamate, Neuron, vol.16, pp.675-6868785064, 1996.

D. E. Bergles and C. E. Jahr, Glial Contribution to Glutamate Uptake at Schaffer Collateral???Commissural Synapses in the Hippocampus, The Journal of Neuroscience, vol.18, issue.19, pp.7709-77169742141, 1998.
DOI : 10.1523/JNEUROSCI.18-19-07709.1998

S. H. Oliet, R. Piet, and D. A. Poulain, Control of Glutamate Clearance and Synaptic Efficacy by Glial Coverage of Neurons, Science, vol.292, issue.5518, pp.923-92611340204, 2001.
DOI : 10.1126/science.1059162
URL : https://hal.archives-ouvertes.fr/inserm-00000059

V. Tonello, A. Gundersen, and . Volterra, Glutamate exocytosis from astrocytes controls synaptic strength, Nat. Neurosci, vol.10, pp.331-33917310248, 2007.

N. B. Hamilton and D. , Do astrocytes really exocytose neurotransmitters?, Nature Reviews Neuroscience, vol.327, issue.4, pp.227-23820300101, 2010.
DOI : 10.1042/bj2660261

M. C. Angulo, A. S. Kozlov, S. Charpak, and E. Audinat, Glutamate Released from Glial Cells Synchronizes Neuronal Activity in the Hippocampus, Journal of Neuroscience, vol.24, issue.31, pp.6920-6927, 2004.
DOI : 10.1523/JNEUROSCI.0473-04.2004

M. Navarrete and A. Araque, Endocannabinoids Potentiate Synaptic Transmission through Stimulation of Astrocytes, Neuron, vol.68, issue.1, pp.113-12620920795, 2010.
DOI : 10.1016/j.neuron.2010.08.043

A. Filosa, S. Paixão, S. D. Honsek, M. A. Carmona, L. Becker et al., Neuron-glia communication via EphA4/ephrin-A3 modulates LTP through glial glutamate transport, Nature Neuroscience, vol.25, issue.10, pp.1285-1292, 2009.
DOI : 10.1038/nn.2394
URL : http://europepmc.org/articles/pmc3922060?pdf=render

C. Henneberger, T. Papouin, S. H. Oliet, and D. A. Rusakov, Long-term potentiation depends on release of d-serine from astrocytes, Nature, vol.28, issue.7278, pp.232-236, 2010.
DOI : 10.1038/nature08673

C. Agulhon, T. A. Fiacco, and K. D. Mccarthy, Hippocampal Short- and Long-Term Plasticity Are Not Modulated by Astrocyte Ca2+ Signaling, Science, vol.46, issue.16, pp.1250-1254, 2010.
DOI : 10.1523/JNEUROSCI.3346-08.2008

S. G. Waxman, Axon-glia interactions: Building a smart nerve fiber, Current Biology, vol.7, issue.7, pp.406-41010, 1997.
DOI : 10.1016/S0960-9822(06)00203-X
URL : https://doi.org/10.1016/s0960-9822(06)00203-x

Y. Yamazaki, Y. Hozumi, K. Kaneko, T. Sugihara, S. Fujii et al., Modulatory effects of oligodendrocytes on the conduction velocity of action potentials along axons in the alveus of the rat hippocampal CA1 region, Neuron Glia Biology, vol.3, issue.04, pp.325-33410, 2007.
DOI : 10.1017/S1740925X08000070

C. Hildebrand and S. G. Waxman, Postnatal differentiation of rat optic nerve fibers: Electron microscopic observations on the development of nodes of Ranvier and axoglial relations, The Journal of Comparative Neurology, vol.79, issue.1
DOI : 10.1001/archopht.1968.03850040472015

J. A. Black and S. G. Waxman, The perinodal astrocyte, Glia, vol.22, issue.3, pp.169-183, 1988.
DOI : 10.1016/S0079-6123(08)61819-1

K. Ogata and T. Kosaka, Structural and quantitative analysis of astrocytes in the mouse hippocampus, Neuroscience, vol.113, issue.1, pp.221-23310, 2002.
DOI : 10.1016/S0306-4522(02)00041-6

C. Giaume, A. Koulakoff, L. Roux, D. Holcman, and N. Rouach, Astroglial networks: a step further in neuroglial and gliovascular interactions, Nature Reviews Neuroscience, vol.94, issue.2, pp.87-9910, 1038.
DOI : 10.1161/01.RES.86.2.e42

. Acknowledgments, M. We, and J. M. Seagar, Goaillard for helpful comments on the manuscript. Funding: This work was supported by, Recherche, and Région Provence-Alpes-Côte d'Azur