Séminaires

Le séminaire hebdomadaire du laboratoire PMMH a lieu tous les vendredis à 11h, au premier étage Barre Cassan, campus Jussieu (plan).

Contact :
Stéphane Perrard
Etienne Reyssat
Virgile Thiévenaz
responsables-seminaires (arobase) pmmh.espci.fr

PMMH
BARRE CASSAN
BAT A 1ER ETAGE CASE 18
7 QUAI SAINT BERNARD
75005 PARIS
France

Tel : (33) 1 40 79 45 22


Séminaire PMMH – Olga Dudko (University of California at San Diego)

Vendredi 18 avril de 11h00 à 12h00 - Salle réunion PMMH 1

Specificity and universality in neuronal communication.

Our ability to feel, think, or act is determined by the capacity of our neurons to communicate rapidly and precisely. Even though we have a theory that describes the propagation of signals along a single neuron (the Hodgkin–Huxley work leading to ion channels), there was no comparably compelling theory for the transmission of signals across the synapses between neurons, despite a rich body of quantitative data. I will discuss how we might be able to go from the molecular constituents of synapses all the way to the phenomenology of synaptic transmission and further to memory and learning, in one coherent theory. While rates of neurotransmitter release in different synapses span nearly ten orders of magnitude, the dependence of these rates on the underlying control signal is found to obey a simple, universal scaling law. The physical principles embodied in this scaling connect to processes across the traditional subfields of biology – from neuronal communication to viral infection, fertilization of the egg, and the growth of our muscles. These commonalities suggest the possibility of a unifying theory.

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Séminaires récents  (7)

  • Séminaire PMMH - Máté Nagy (Eötvös Loránd University, Budapest)
    Vendredi 11 avril de 11h00 à 12h00 - Salle réunion PMMH 1
    Physics of animal collective behavior : interactions with one another and their environment
    The breathtaking aerial displays and mesmerizing formations of birds, fish shoals and the thunderous gallop of hundreds of horses exemplify captivating group behaviors in nature. Traditional measurement methods fall short in capturing these intricate behaviors arising from simple individual interactions, (…)
  • Séminaire PMMH - Máté Nagy (Eötvös Loránd University, Budapest)
    Vendredi 11 avril de 11h00 à 12h00 - Salle réunion PMMH 1
    Physics of animal collective behavior : interactions with one another and their environment
    The breathtaking aerial displays and mesmerizing formations of birds, fish shoals and the thunderous gallop of hundreds of horses exemplify captivating group behaviors in nature. Traditional measurement methods fall short in capturing these intricate behaviors arising from simple individual interactions, (…)
  • Séminaire PMMH
    Vendredi 4 avril de 11h00 à 12h00 - Salle réunion PMMH 1
  • Séminaire PMMH - Pascale Aussillous, Polytech' & Aix Marseille Université
    Vendredi 28 mars de 11h00 à 12h00 - Salle réunion PMMH 1
    Discharge Flow of a Granular Media from a Silo : Experimental investigations and continuum modeling
    Silos are widely used in the industry. While empirical predictions of the flow rate, based on scaling law, exist for more than a century, recently advances have been made on the understanding of the control parameters of the flow. In particular using a continuum model together with a visco-plastic frictional (…)
  • Séminaire PMMH – Charlotte de Blois (FAST, U. Paris-Saclay)
    Vendredi 21 mars de 11h00 à 12h00 - Salle réunion PMMH 1
  • Séminaire PMMH – Anand U. Oza (NJIT, USA)
    Vendredi 14 mars de 11h00 à 12h00 - Salle réunion PMMH 1
    Coarse-grained models for schooling swimmers in fast flows
    The beautiful displays exhibited by fish schools and bird flocks have long fascinated scientists, but the role of their complex behavior remains largely unknown. In particular, the influence of hydrodynamic interactions on schooling and flocking has been the subject of debate in the scientific literature. I will (…)
  • Séminaire PMMH - Imgard Bischofberger, MIT
    Vendredi 7 mars de 11h00 à 12h00 - Salle réunion PMMH 1
    Flowing through a world of patterns
    Why is there so much structure, order and texture to life and nature, rather than a featureless expanse ? From microscopic snowflakes to dried mud and vast river networks, pattern formation gives rise to systems of extraordinary intricacy and beauty. Understanding how a system spontaneously selects its overall (…)

Instructions générales pour les conférenciers

Le public du séminaire est très hétérogène (rien qu’au PMMH nous travaillons sur des thématiques très diverses, mécanique des fluides, des milieux granulaires, des solides, physique statistique, physique du mouillage, micro-fluidique, biophysique,...) l’objectif est donc de ne pas faire un séminaire trop spécialiste : au moins la première moitié du séminaire à un niveau accessible pour celui qui ne connaît rien sur le sujet.

Le séminaire a lieu à 11h. rendez-vous 15 minutes avant pour installer et tester la projection.

Le séminaire dure environ 45 minutes pour laisser un peu de temps pour discuter à la fin.

Lien vers séminaires café (internes, tous les jeudis)


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Informations Pratiques

Laboratoire : 01 40 79 45 22
Directeur : Ramiro GODOY DIANA
Codirecteur : Laurent DUCHEMIN
Administratrice : Frédérique AUGER (01 40 79 45 22)
Gestionnaire : Claudette BAREZ (01 40 79 58 53)
Courriel : dir (arobase) pmmh.espci.fr