Alexandre Gramfort

Summary

Affiliation: INRIA Sophia Antipolis
Country: France

Publications

  1. ncbi request reprint Sparse DSI: learning DSI structure for denoising and fast imaging
    Alexandre Gramfort
    Parietal team, INRIA Saclay Île de France, Saclay, France
    Med Image Comput Comput Assist Interv 15:288-96. 2012
  2. pmc Mixed-norm estimates for the M/EEG inverse problem using accelerated gradient methods
    Alexandre Gramfort
    Parietal project team, INRIA Saclay Île de France, France
    Phys Med Biol 57:1937-61. 2012
  3. pmc Forward field computation with OpenMEEG
    Alexandre Gramfort
    Parietal project team, INRIA Saclay Île de France, NeuroSpin CEA, Gif Yvette, France
    Comput Intell Neurosci 2011:923703. 2011
  4. doi request reprint Tracking cortical activity from M/EEG using graph cuts with spatiotemporal constraints
    Alexandre Gramfort
    Parietal project team, INRIA Saclay Île de France, Orsay, France
    Neuroimage 54:1930-41. 2011
  5. pmc OpenMEEG: opensource software for quasistatic bioelectromagnetics
    Alexandre Gramfort
    Athena project team, Inria Sophia Antipolis Méditerranée, France
    Biomed Eng Online 9:45. 2010
  6. doi request reprint Graph-based variability estimation in single-trial event-related neural responses
    Alexandre Gramfort
    Odyssee Project Team, Institut National de Recherche en Informatique et en Automatique, Sophia Antipolis 06902, France
    IEEE Trans Biomed Eng 57:1051-61. 2010
  7. ncbi request reprint Functional brain imaging with M/EEG using structured sparsity in time-frequency dictionaries
    Alexandre Gramfort
    INRIA, Parietal team, Saclay, France
    Inf Process Med Imaging 22:600-11. 2011
  8. pmc Total variation regularization for fMRI-based prediction of behavior
    Vincent Michel
    INRIA, Saclay Ile de France, Parietal team, France CEA DSV I2BM Neurospin LNAO, Saclay, France
    IEEE Trans Med Imaging 30:1328-40. 2011
  9. ncbi request reprint Challenging the estimation of cortical activity from MEG with simulated fMRI-constrained retinotopic maps
    Alexandre Gramfort
    Odyssée Project Team ENPC ENS INRIA
    Conf Proc IEEE Eng Med Biol Soc 2007:4945-8. 2007
  10. ncbi request reprint Multi-subject dictionary learning to segment an atlas of brain spontaneous activity
    Gaël Varoquaux
    INSERM U992, Cognitive Neuroimaging Unit, Saclay, France
    Inf Process Med Imaging 22:562-73. 2011

Detail Information

Publications10

  1. ncbi request reprint Sparse DSI: learning DSI structure for denoising and fast imaging
    Alexandre Gramfort
    Parietal team, INRIA Saclay Île de France, Saclay, France
    Med Image Comput Comput Assist Interv 15:288-96. 2012
    ..The observation holds even if the diffusion profiles are estimated on a different subject dataset from an undersampled q-space of 40 measurements...
  2. pmc Mixed-norm estimates for the M/EEG inverse problem using accelerated gradient methods
    Alexandre Gramfort
    Parietal project team, INRIA Saclay Île de France, France
    Phys Med Biol 57:1937-61. 2012
    ..Furthermore, thanks to the convexity of the optimization problem, we can provide optimality conditions that guarantee global convergence. The utility of the methods is demonstrated both with simulations and experimental MEG data...
  3. pmc Forward field computation with OpenMEEG
    Alexandre Gramfort
    Parietal project team, INRIA Saclay Île de France, NeuroSpin CEA, Gif Yvette, France
    Comput Intell Neurosci 2011:923703. 2011
    ..OpenMEEG is open source and multiplatform. It can be used from Python and Matlab in conjunction with toolboxes that solve the inverse problem; its integration within FieldTrip is operational since release 2.0...
  4. doi request reprint Tracking cortical activity from M/EEG using graph cuts with spatiotemporal constraints
    Alexandre Gramfort
    Parietal project team, INRIA Saclay Île de France, Orsay, France
    Neuroimage 54:1930-41. 2011
    ..Results of the method are provided on two MEG cognitive experiments in the visual and somatosensory cortices, demonstrating the ability of the algorithm to handle various types of data...
  5. pmc OpenMEEG: opensource software for quasistatic bioelectromagnetics
    Alexandre Gramfort
    Athena project team, Inria Sophia Antipolis Méditerranée, France
    Biomed Eng Online 9:45. 2010
    ..The aim of this paper is to present OpenMEEG, both from the theoretical and the practical point of view, and to compare its performances with other competing software packages...
  6. doi request reprint Graph-based variability estimation in single-trial event-related neural responses
    Alexandre Gramfort
    Odyssee Project Team, Institut National de Recherche en Informatique et en Automatique, Sophia Antipolis 06902, France
    IEEE Trans Biomed Eng 57:1051-61. 2010
    ..Details and validation of this second step are provided for latency estimation. Performance and robustness experiments are conducted on synthetic data, and results are presented on EEG data from a P300 oddball experiment...
  7. ncbi request reprint Functional brain imaging with M/EEG using structured sparsity in time-frequency dictionaries
    Alexandre Gramfort
    INRIA, Parietal team, Saclay, France
    Inf Process Med Imaging 22:600-11. 2011
    ..We compare the accuracy of our new method to recently proposed inverse solvers with help of simulations and analysis of real MEG data...
  8. pmc Total variation regularization for fMRI-based prediction of behavior
    Vincent Michel
    INRIA, Saclay Ile de France, Parietal team, France CEA DSV I2BM Neurospin LNAO, Saclay, France
    IEEE Trans Med Imaging 30:1328-40. 2011
    ..Moreover, this article presents the first use of TV regularization for classification...
  9. ncbi request reprint Challenging the estimation of cortical activity from MEG with simulated fMRI-constrained retinotopic maps
    Alexandre Gramfort
    Odyssée Project Team ENPC ENS INRIA
    Conf Proc IEEE Eng Med Biol Soc 2007:4945-8. 2007
    ..The excellent time resolution of MEG imaging further opens interesting perspectives on the temporal and spectral processes sustained by the human visual system...
  10. ncbi request reprint Multi-subject dictionary learning to segment an atlas of brain spontaneous activity
    Gaël Varoquaux
    INSERM U992, Cognitive Neuroimaging Unit, Saclay, France
    Inf Process Med Imaging 22:562-73. 2011
    ..On resting-state fMRI data, we extract the first atlas of spontaneous brain activity and show how it defines a subject-specific functional parcellation of the brain in localized regions...