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Consolider CogNeuro Seminar Series
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Consolider Groups
Speech Perception, Production and Bilingualism
Cognitive Neuroscience of Auditory Perception and Attention
Group of Attention, Action and Perception
Computational and Theoretical Neuroscience
Neuropsychology and Functional Neuroimaging
Grammar and Bilingualism
 
 
 

Noticias
March 13h: Pre-Consolider Discussion: Gergo Csibra

 

Friday , March  16th, Gergo Csibra will give a talk at our Consolider Seminar Series and its fixed a pre-Consolider discussion on next Tuesday March 13th  at 3 P.M in room 55.430

  1.  Two papers suggested by the speaker are here
 

 
February 10th: Talk by Mikail Rubinov

 

 February 10th at Noon in room 52.S29 at the Universitat Pompeu Fabra.


Mikail Rubinov from Department of Psychiatry, University of Cambridge.

Host: Gustavo Deco.

The title of his talk is: "Structural determinants and directed information transfer in self-organized critical neuronal networks".

Please note that you can find more information about forthcoming talks, locations, etc. on the WebPage of the CogNeuro Consolider Seminars

 

 

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Abstract

 

Self-organized criticality refers to the spontaneous emergence of self-similar dynamics in complex systems poised between order and randomness. The presence of self-organized critical dynamics in biological neuronal networks is supported by recent neurophysiological studies; these studies additionally associate critical neuronal network dynamics with several appealing properties, including optimized information transfer. Here we systematically seek the structural determinants of self-organized critical neuronal dynamics and quantify directed information transfer at criticality, in neurobiologically realistic neuronal networks. We study dynamics in hierarchically modular networks of leaky integrate-and-fire neurons with spike-timing-dependent synaptic plasticity and axonal conduction delays. We characterize emergent dynamics in our networks by distributions of active neuronal ensemble modules (neuronal avalanches) and rigorously assess these distributions for power-law scaling. We define three novel transfer-entropy based measures of directed information transfer; these measures compute the amount of predictive information present in neuronal avalanche properties (avalanche size, avalanche duration and inter-avalanche period) of the source region about avalanche properties of the destination region. We find that synaptic plasticity enables a rapid phase transition from random subcritical dynamics to ordered supercritical dynamics. Importantly, modular connectivity and low wiring cost broaden this transition, and enable a regime indicative of self-organized criticality. The critical regime is associated with maximized directed information transfer on all three computed measures. We hence infer a novel association between self-organized critical neuronal dynamics and several neurobiologically realistic features of structural connectivity, and find quantitative evidence for maximized directed information transfer at criticality.

 
January 27th: Talk by Marc Ernst


January 27th
at Noon in room 52.S27 at the Universitat Pompeu Fabra.


Marc Ernst from Max Planck Institute for Biological Cybernetics.

Host: Salvador Soto.

The title of his talk is: "Recalibration makes (the) perfect sense".

Please note that you can find more information about forthcoming talks, locations, etc. on the WebPage of the CogNeuro Consolider Seminars

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Abstract 

The brain receives information about the environment from all the sensory modalities, including vision, touch and audition. To efficiently interact with the environment, this information must eventually converge in the brain in order to form a reliable and accurate multimodal percept. This process is often complicated by the existence of noise at every level of signal processing, which makes the sensory information derived from the world imprecise and potentially inaccurate. There are several ways in which the nervous system may minimize the negative consequences of noise in terms of precision and accuracy. Two key strategies are to combine redundant sensory estimates and to utilize acquired knowledge about the statistical regularities of different sensory signals. In this talk, I elaborate on how these strategies may be used by the nervous system in order to obtain the best possible estimates from noisy sensory signals, such that we are able of efficiently interact with the environment. Particularly, I will focus on the learning aspects and how our perceptions are tuned to the statistical regularities of an ever-changing environment. 

 
January 13th: Talk by Eva María Moreno


January 13th
at Noon in room 52.S27 at the Universitat Pompeu Fabra.


Eva Maria Moreno from  Instituto Pluridisciplinar, Unidad de Cartografía Cerebral, Universidad Complutense de Madrid.

Host: Albert Costa. 

The title of his talk is: "Brain responses to verbal expectancies: emotion regulation during language comprehension".

Please note that you can find more information about forthcoming talks, locations, etc. on the WebPage of the CogNeuro Consolider Seminars

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December 16th: Talk by Luca Bonatti

 

December 16th  at  Noon in room  52.S27 at the Universitat Pompeu Fabra.

Luca Bonatti from ICREA and the Universitat Pompeu Fabra ( web )

The title of his talk is: "Logic and Probability at 12 months"

We will let you know the title and the abstract in the next few days.

Please note that you can find more information about forthcoming talks, locations, etc. on the WebPage of the CogNeuro Consolider Seminars

 

 

Abstract:

In the last 30 years, the cognitive sciences have been marked by one important idea:  that the mind is modular. Fodor, who made the idea popular,  had another great idea: that of a Language of Thought. While the former idea has produced an incredible amount of science, the latter has not generated much empirical research. I will try to argue that this second idea might be tranformed into a research program. I will revise evidence on infants' abilities at reasoning about probabilistic logical events, and comment about what these results mean for an empirical language of thought hypothesis.

 
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