CORTEX International Meeting 2013
Published on April 22, 2013
LabEx CORTEX is organising an International Conference in Lyon next June....
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| Teams |
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Cortical Architecture, Coding and Plasticity |
| We investigate information processing in the cortical networks underlying visual perception and visuo-motor integration. We have established the statistical tools for modelling connectivity underlying the hierarchical organization of the cortex, and are exploring the context-dependent processing that these results suggest. Cortical networks are identified using fMRI, both in human and non-human primates. Psychophysics allows inference about the computational properties and when coupled with fMRI allows the localisation of the sites of these computations in cortical networks. The fMRI in the monkey makes it possible to understand functional networks in humans in terms of the cellular mechanisms established by studies carried out in the monkey. Developmental, aging and pathological models are also used to explore the independence and interactions of visual functions with performance. Finally, we apply the results from this approach to the design of stimuli and training procedures in order to improve performance related to visual tasks in observers with low vision. | |
| Henry Kennedy | SBRI investigates the development, function and repair of neuronal circuits involved in cognition, motor control and biological rhythms and researches the structural foundations of computation in the cortex. We seek to develop embryonic stem cell based therapies so as to reverse the effects of brain lesions leading to the motor and cognitive deficits found in neurological disease including Parkinson's. |
| Jennifer Beneyton | Administration |
| Michel Berland | Ontogenesis of brain in primates, diabetes and pregnancy, tobacco and pregnancy, infectious deseases and pregnancy. |
| Razvan Gamanut PhD Student | |
| Peggy Gerardin | |
| Pascale Giroud | Analysis of cortical connectivity |
| Ana Rita Gomes EPHE student | |
| Kenneth Knoblauch | Perception and sensory coding, color vision, psychophysics, functional cerebral imagery, low vision, development of visual function, modeling of neural processes. |
| Camille Lamy | A major part of my work in the team concerns the development of a so called frameless stereotaxy or neuronavigation system, the “Brainsight Primate”. This system makes it possible to perform very precise intracerebral injections of neuronal tracers or place probes, electrodes etc. in buried ... |
| Loïc Magrou PhD student | |
| Pierre Misery | I am working on the cortico-cortical connectivity of the macaque. We use retrograde tracers to examine topography of interareal connectivity. To do this, we inject tracers in the brain of macaque using MRI guided technology (Brain Sight). We carry out histological processing on the brain so as to accurately allocate labelled neurons to particular cortical areas.An important aspect of the analysis of the material is the recording of the XY coordinates ... |
| Marie-Therese Perenin | Role of the Posterior Parietal Cortex in visually elicited hand movements : Neuropsychology in brain damaged patients and functional imaging in both healthy and brain damaged subjects.
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| Marco Valdebenito | Animal welfare and anatomy |
| Francois Vital-Durand | Infant Vision Low Vision at all ages
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Selected Publications of Team members :
Markov N.T., Ercsey-Ravasz M., Lamy C., Ribeiro-Gomes A.R., Magrou L., Misery P., Giroud P. Barone P., Dehay C., Toroczkai Z., Knoblauch, K., Van Essen D.C., Kennedy H. (2013) The role of long-range connections on the specificity of the macaque interareal cortical network Proceedings of the National Academy of Science, avanced online publication
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Markov NT, Misery P, Falchier A, Lamy C, Vezoli J, Quilodran R, Gariel MA, Giroud P, Ercsey-Ravasz M, Pilaz LJ, Huissoud C, Barone P, Dehay C, Toroczkai Z, Van Essen DC, Kennedy H, Knoblauch K (2011) Weight Consistency Specifies Regularities of Macaque Cortical Networks Cerebral Cortex 21:1254-1272
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Vezoli J, Fifel K, Leviel V, Dehay C, Kennedy H, Cooper HM, Gronfier C, Procyk E (2011) Early Presymptomatic and Long-Term Changes of Rest Activity Cycles and Cognitive Behavior in a MPTP-Monkey Model of Parkinson’s Disease. PLoS ONE 6(8): e23952
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Anderson JC, Kennedy H, Martin KA (2011) Pathways of attention: synaptic relationships of frontal eye field to v4, lateral intraparietal cortex, and area 46 in macaque monkey. J Neurosci 31: 10872-10881
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Markov NT, Ercsey-Ravasz MM, Gariel MA, Dehay C, Knoblauch A, Toroczkai Z, Kennedy H (2011) The tribal networks of the cerebral cortex. In: Cerebral Plasticity (Chalupa LM, Berardi N, Caleo M, Galli-Resta L, Pizzorusso T, eds), p 275-290. Cambridge MA: MIT Press.
Dehay C, Kennedy H (2007) Cell-cycle control and cortical development. Nat Rev Neurosci 8:438-50
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Clavagnier S, Prado J, Kennedy H, Perenin MT (2007) How humans reach: distinct cortical systems for central and peripheral vision. Neuroscientist 13(1):22-7
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Knoblauch K, Neitz M, Neitz J (2006) An urn model of the development of L/M cone ratios in human and macaque retinas Visual Neurosci 23:387-394
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Dojat M, Piettre L, Delon-Martin C, Pachot-Chouard M, Segebarth C, Knoblauch K (2006) Global Integration of local color differences in transparency perception: an fMRI study. Vis Neurosci 23(3-4):357-64
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Lukaszewicz A, Savatier P, Cortay V, Giroud P, Huissoud C, Berland M, Kennedy H, Dehay C (2005) G1 phase regulation, Area-Specific cell cycle control, and Cytoarchitectonics in the Primate Cortex Neuron 47 (3):353-64
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Prado J, Clavagnier S, Otzenberger H, Scheiber C, Kennedy H, Perenin MT (2005) Two cortical systems for reaching in central and peripheral vision. Neuron, 48(5):849-58
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Obein G, Knoblauch K, Vienot F (2004) Difference scaling of gloss : Non-linearity, binocularity and constancy. J Vision 4:711-720
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Bouet R, Knoblauch K (2004) Perceptual classification of chromatic modulation. Vis Neurosci 21:283-9
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Vezoli J, Falchier A, Jouve B, Knoblauch K, Young M, Kennedy H (2004) Quantitative analysis of connectivity in the visual cortex: extracting function from structure. Neuroscientist 10(5):476-82
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Clavagnier S, Falchier A, Kennedy H. (2004) Long-distance feedback projections to area V1: Implications for multisensory integration, spatial awareness, and visual consciousness. Cog Affect Behav Neurosci 4(2):117-126
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Falchier A, Clavagnier S, Barone P, Kennedy H (2002) Anatomical evidence of multimodal integration in primate striate cortex. J Neurosci 22:5749-59
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Knoblauch K, Shevell SK (2001) Relating cone signals to color appearance : Failure of monotonicity in yellow / blue. Vis Neurosci 18:901-6
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Barone P, Batardière A, Knoblauch K, Kennedy H (2000) Laminar distribution of neurons in extrastriate areas projecting to V1 and V4 correlates with the hierarchical rank and indicates the operation of a distance rule. J Neurosci 20 :3263-81
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Batardière A, Barone P, Dehay C, Kennedy H (1998) Area-specific laminar distribution of cortical feedback neurons projecting to cat area 17: Quantitative analysis in the adult and during ontogeny. J Comp Neurol 396:493-510
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