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  Journal Club de Neurocomputation
Tous les premiers mardi du mois 9h30 à l'Institut Magendie		  
Thomas Boraud Prochain Journal Club le Mardi 5 Octobre 2010
9H30 Institut Francois Magendie / Thomas Boraud

le Journal Club du 2 juin a été présenté par André Garenne

Oscillations, Phase-of-Firing Coding, and Spike Timing-Dependent Plasticity: AnEfficient Learning Scheme
The Journal of Neuroscience, October 28, 2009 • 29(43):13484 –13493

Timothee Masquelier,1 Etienne Hugues,1 Gustavo Deco,1 and Simon J. Thorpe2
1Theoretical and Computational Neuroscience Group, Center for Brain and Cognition, Universitat Pompeu Fabra, Barcelona 08018, Spain, 2Centre de Recherche Cerveau et Cognition, Universite´ Toulouse3, Centre National de la Recherche Scientifique, Faculte de Medecine de Rangueil, Toulouse 31062, France

 Gif pdf
  Recent experiments have established that information can be encoded in the spike times of neurons relative to the phase of a background oscillation in the local field potential—a phenomenon referred to as “phase-of-firing coding” (PoFC). These firing phase preferences could result from combining an oscillation in the input current with a stimulus-dependent static component that would produce the variations in preferred phase, but it remains unclear whether these phases are an epiphenomenon or really affect neuronal interactions— only then could they have a functional role. Here we show that PoFC has a major impact on downstream learning and decoding with the now well established spike timing-dependent plasticity (STDP). To be precise, we demonstrate with simulations how a single neuron equipped with STDP robustly detects a pattern of input currents automatically encoded in the phases of a subset of its afferents, and repeating at random intervals. Remarkably, learning is possible even when only a small fraction of the afferents (10%) exhibits PoFC. The ability of STDP to detect repeating patterns had been noted before in continuous activity, but it turns out that oscillations greatly facilitate learning.Abenchmark with more conventional rate-based codes demonstrates the superiority of oscillations and PoFC for both STDP-based learning and the speed of decoding: the oscillation partially formats the input spike times, so that they mainly depend on the current input currents, and can be efficiently learned by STDP and then recognized in just one oscillation cycle. This suggests a major functional role for oscillatory brain activity that has been widely reported experimentally.  
 

Séance du... Archives 2010 - 2009- 2008- 2007-  
Mardi 1er Juin 2010 Oscillations, Phase-of-Firing Coding, and Spike Timing-Dependent Plasticity:AnEfficient Learning Scheme . Timothe´e Masquelier, Etienne Hugues, Gustavo Deco, and Simon J. Thorpe .Presentation André Garenne  
Mardi 4 Mai

Paz R, Gelbard-Sagiv H, Mukamel R, Harel M, Malach R, Fried I (2010) A neural substrate in the human hippocampus for linking successive events. (Cyril Dejean , presentation)
Proceedings of the National Academy of Sciences 107:6046-6051.

  
Mardi 6 Avril 2010 "MEASURING BELIEFS AND REWARDS: A NEUROECONOMIC APPROACH". Andrew Caplin, Mark Dean, Paul W. Glimcher, Robb B. Rutledge; Quarterly Journal of Economics (sous presse)  
Mardi 2 Février 2010 Heterogenous Population Coding of a Short-Term Memory and Decision Task Joseph K. Jun, Paul Miller, Adrian Hernandez, Antonio Zainos, Luis
Lemus,Carlos D. Brody, and Ranulfo Romo .
J neurosci 2010 presentation par Emilie Syed
  
Mardi 1 dec 09 Tiger Moth Jams Bat Sonar
Aaron J. Corcoran, Jesse R. Barber, William E. Conner
Science 325, 325 (2009);présenté par André Garenne
  
Mardi 3 Nov 09 "Neural correlates of depth of strategic reasoning in medial prefrontal cortex par Giorgio Coricellia and Rosemarie Nagel" présenté par Martin Guthrie  
Mardi 6 octo 09 Validation of Decision-Making Models and Analysis of Decision Variables in the Rat Basal Ganglia Makoto Ito and Kenji Doya1, J Neurosci  
Mardi 7 Juillet Neural correlates of depth of strategic reasoning in medial prefrontal cortex / Giorgio Coricellia and Rosemarie Nagel / PNAS  
Mardi 5 Mai Polk TA, Simen P, Lewis RL et Freedman E. (2002). A computational approach to control in complex cognition. Brain Res Cogn Brain Res 15:71-83.  
Mardi 3 Mars Journal club sera consacré à une revue bibliographique sur les méthodes d'ajustement des paramètres en modélisation par rapport aux données expérimentale...  
Mardi 3 Février 09 Emergent Properties of Tactile Scenes Selectively Activate Barrel Cortex Neurons
Vincent Jacob, Julie Le Cam, Valerie Ego-Stengel, and Daniel E. Shulz,
Neuron DOI 10.1016/j.neuron.2008.10.017
  
Mardi 6 Janvier 09 Automated neuron model optimization techniques: a review. W. Van Geit · E. De Schutter · P. Achard. Biol Cybern (2008) 99:241–251
  
Mercredi 10 dec "The temporal precision of reward prediction in dopamine neurons"
Christopher D Fiorillo, William T Newsome1 & Wolfram Schultz
AUGUST 2008 NATURE NEUROSCIENCE
  
Mardi 2 octo "Computational mechanisms of mechanosensory processing in the cricket"
Gwen A. Jacobs, John P. Miller and Zane Aldworth J Exp Biol 2008. présenté par Didier Leray.

  
Mardi 3 juin Neurometabolic coupling in cerebral cortex reflects synaptic more than spiking activity.Ahalya Viswanathan & Ralph D Freeman.NATURE NEUROSCIENCE VOLUME 10 [ NUMBER 10 [ OCTOBER 2007 par Steeve Laquitaine  
Mardi 13 mai "Plant Classification from Bat-Like Echolocation Signals"
Yossi Yovel1 et al Présenté par André Garenne		  
Mardi 1er Avril Hold Your Horses: Impulsivity, Deep Brain Stimulation, and Medication in Parkinsonism.
Michael J. Frank et al., Science Vol. 318. no. 5854, pp. 1309 - 1312, 2007
Présenté par Martin Guthrie
  
Mardi 4 Mars Coordinated Motor Activity in Simulated Spinal Networks Emerges from Simple Biologically Plausible Rules of Connectivity" NICHOLAS DALE Journal of Computational Neuroscience 14, 55–70, 2003 Animé par Anna Beyeler  
Mardi 8 Janvier 2008 Diba K, Buzsaki G (2007)
Forward and reverse hippocampal place-cell sequences during ripples. Nat Neurosci 10:1241-1242.
  
Mardi 11 Décembre Solving the Distal Reward Problem through Linkage of STDP and Dopamine Signaling
Cerebral Cortex October 2007;17:2443--2452 Advance Access publication January 13, 2007
Eugene M. Izhikevich,
 
Mardi 5 Novembre Dopamine-dependent prediction errors underpin reward-seeking behaviour in humans, Pessiglione et coll, 2006. Présenté par Steeve Laquitaine
  
Mardi 2 Octobre Samejima, K., and Doya, K. (2007). Multiple representations of belief states and action values in corticobasal ganglia loops. Ann N Y Acad Sci 1104, 213-228.  
Mardi 10 Juillet "The Temporal Context Model in Spatial Navigation and Relational Learning : Toward a Common Explanation of Medial Temporal Lobe Function Across Domains"
Psychological Review. Psychological Review. 112(1):75-116, January 2005. 		 
Mercredi 6 Juin Auke Jan Ijspeert, Alessandro Crespi,1 Dimitri Ryczko, Jean-Marie Cabelguen
From Swimming to Walking with a Salamander Robot Driven by a Spinal Cord Model
Science, 9 mars 2007, vol.317, n°5817
 
Mardi 15 mai 2007 Ulanovsky N, Moss CF
Hippocampal cellular and network activity in freely moving echolocating bats.
Nat Neurosci 10:224-233 (2007). Rôle de l’hippocampe chez des mammifères à écholocation (Cellules de lieu, oscillations thêta, etc…).		  
gif (thomas.boraud(a)u-bordeaux2.fr)