Eric Halgren

Summary

Affiliation: Harvard University
Country: USA

Publications

  1. pmc Processing stages underlying word recognition in the anteroventral temporal lobe
    Eric Halgren
    Multimodal Imaging Laboratory, Department of Radiology, University of California at San Diego, La Jolla, CA 92093 0841, USA
    Neuroimage 30:1401-13. 2006
  2. ncbi request reprint Vector-based spatial-temporal minimum L1-norm solution for MEG
    Ming Xiong Huang
    Department of Radiology, University of California, San Diego, CA 92037, USA
    Neuroimage 31:1025-37. 2006
  3. ncbi request reprint Cortical activation to illusory shapes as measured with magnetoencephalography
    Eric Halgren
    MGH MIT HMS Athinoula A Martinos Biomedical Imaging Center, Charlestown, MA 02129
    Neuroimage 18:1001-9. 2003
  4. pmc Spatiotemporal cortical dynamics underlying abstract and concrete word reading
    Rupali P Dhond
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Hum Brain Mapp 28:355-62. 2007
  5. doi request reprint Human entorhinal gamma and theta oscillations selective for remote autobiographical memory
    Sarah Steinvorth
    Masssachusetts General Hospital Massachusetts Institute of Technology Harvard Medical School Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Hippocampus 20:166-73. 2010
  6. pmc Spatiotemporal brain maps of delayed word repetition and recognition
    Rupali P Dhond
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Room 2301, Building 149, 13th Street, Charlestown, MA 02129, USA
    Neuroimage 28:293-304. 2005
  7. pmc The advantage of combining MEG and EEG: comparison to fMRI in focally stimulated visual cortex
    Dahlia Sharon
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
    Neuroimage 36:1225-35. 2007
  8. pmc Eye movements modulate the spatiotemporal dynamics of word processing
    Simona Temereanca
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Harvard Medical School, Charlestown, MA 02129, USA
    J Neurosci 32:4482-94. 2012
  9. pmc Ecphory of autobiographical memories: an fMRI study of recent and remote memory retrieval
    Sarah Steinvorth
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Neuroimage 30:285-98. 2006
  10. ncbi request reprint Aids to telemetry in the presurgical evaluation of epilepsy patients: MRI, MEG and other non-invasive imaging techniques
    Susanne Knake
    Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Suppl Clin Neurophysiol 57:494-502. 2004

Detail Information

Publications38

  1. pmc Processing stages underlying word recognition in the anteroventral temporal lobe
    Eric Halgren
    Multimodal Imaging Laboratory, Department of Radiology, University of California at San Diego, La Jolla, CA 92093 0841, USA
    Neuroimage 30:1401-13. 2006
    ....
  2. ncbi request reprint Vector-based spatial-temporal minimum L1-norm solution for MEG
    Ming Xiong Huang
    Department of Radiology, University of California, San Diego, CA 92037, USA
    Neuroimage 31:1025-37. 2006
    ..g., BA 5, 7, SII, SMA, and temporal-parietal junction) with high temporal stability and resolution. VESTAL's potential for obtaining information on source extent was also examined...
  3. ncbi request reprint Cortical activation to illusory shapes as measured with magnetoencephalography
    Eric Halgren
    MGH MIT HMS Athinoula A Martinos Biomedical Imaging Center, Charlestown, MA 02129
    Neuroimage 18:1001-9. 2003
    ..The V1/V2 modulation at this time may reflect top-down modulation by lateral occipitotemporal and ventral temporal areas...
  4. pmc Spatiotemporal cortical dynamics underlying abstract and concrete word reading
    Rupali P Dhond
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Hum Brain Mapp 28:355-62. 2007
    ....
  5. doi request reprint Human entorhinal gamma and theta oscillations selective for remote autobiographical memory
    Sarah Steinvorth
    Masssachusetts General Hospital Massachusetts Institute of Technology Harvard Medical School Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Hippocampus 20:166-73. 2010
    ..This contribution may then be relayed back to AC during retrieval of the memory orchestrated by theta interactions with ER. Accordingly, theta oscillations were recorded simultaneously in frontal and temporal cortices...
  6. pmc Spatiotemporal brain maps of delayed word repetition and recognition
    Rupali P Dhond
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Room 2301, Building 149, 13th Street, Charlestown, MA 02129, USA
    Neuroimage 28:293-304. 2005
    ..Additionally, left ventromedial temporal sites may be relatively more involved in episodic retrieval, while lateral temporal sites may participate more in automatic priming...
  7. pmc The advantage of combining MEG and EEG: comparison to fMRI in focally stimulated visual cortex
    Dahlia Sharon
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, MA 02129, USA
    Neuroimage 36:1225-35. 2007
    ..Thus, combining MEG and EEG data is important for high-resolution spatiotemporal studies of the human brain...
  8. pmc Eye movements modulate the spatiotemporal dynamics of word processing
    Simona Temereanca
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Harvard Medical School, Charlestown, MA 02129, USA
    J Neurosci 32:4482-94. 2012
    ..Together, these results suggest a complex interplay between visual and central saccadic mechanisms during reading...
  9. pmc Ecphory of autobiographical memories: an fMRI study of recent and remote memory retrieval
    Sarah Steinvorth
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Neuroimage 30:285-98. 2006
    ..This network, including MTL structures, changed little with the age of the memories...
  10. ncbi request reprint Aids to telemetry in the presurgical evaluation of epilepsy patients: MRI, MEG and other non-invasive imaging techniques
    Susanne Knake
    Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Suppl Clin Neurophysiol 57:494-502. 2004
  11. ncbi request reprint Application of magnetoencephalography in epilepsy patients with widespread spike or slow-wave activity
    Hideaki Shiraishi
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital Harvard Medical School, Charlestown, Massachusetts, USA
    Epilepsia 46:1264-72. 2005
    ....
  12. ncbi request reprint Dynamic statistical parametric mapping for analyzing the magnetoencephalographic epileptiform activity in patients with epilepsy
    Hideaki Shiraishi
    MGH MIT HMS Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital Harvard Medical School, Charlestown, MA, USA
    J Child Neurol 20:363-9. 2005
    ....
  13. ncbi request reprint N400-like magnetoencephalography responses modulated by semantic context, word frequency, and lexical class in sentences
    Eric Halgren
    MGH NMR Center, Harvard Medical School, Boston, Massachusetts, USA
    Neuroimage 17:1101-16. 2002
    ..These results help identify a distributed cortical network that supports online semantic processing...
  14. pmc Cancellation of EEG and MEG signals generated by extended and distributed sources
    Seppo P Ahlfors
    Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital Harvard Medical School, Charlestown, 02129, USA
    Hum Brain Mapp 31:140-9. 2010
    ..Furthermore, the selective cancellation may be used to explain some observed differences between EEG and MEG in terms of focal vs. widespread cortical activity...
  15. ncbi request reprint Advances in the application of technology to epilepsy: the CIMIT/NIO Epilepsy Innovation Summit
    Steven C Schachter
    Center for Integration of Medicine and Innovative Technology, Boston, MA, USA
    Epilepsy Behav 16:3-46. 2009
    ..This article summarizes the discussions and demonstrates that cross-disciplinary interactions can catalyze collaborations between physicians and engineers to address and solve many of the pressing unmet needs in epilepsy...
  16. pmc Effects of alcohol on verbal processing: an event-related potential study
    Ksenija Marinkovic
    Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, Massachusetts, USA
    Alcohol Clin Exp Res 28:415-23. 2004
    ..Using event-related potentials (ERP) and a word-recognition paradigm, this study investigated the effects of alcohol intoxication on prelexical, semantic, and mnemonic aspects of verbal processing...
  17. doi request reprint Sequential processing of lexical, grammatical, and phonological information within Broca's area
    Ned T Sahin
    Department of Radiology, University of California San Diego, La Jolla, CA 92037, USA
    Science 326:445-9. 2009
    ..This suggests that a linguistic processing sequence predicted on computational grounds is implemented in the brain in fine-grained spatiotemporally patterned activity...
  18. ncbi request reprint Spatiotemporal maps of past-tense verb inflection
    Rupali P Dhond
    Department of Radiology, University of Utah, Salt Lake City 84105, USA
    Neuroimage 19:91-100. 2003
    ..Thus, the brain inflects verbs by dynamically modulating different functional divisions of an integrated language system...
  19. ncbi request reprint Abstract grammatical processing of nouns and verbs in Broca's area: evidence from fMRI
    Ned T Sahin
    Department of Psychology, Harvard University, Cambridge, MA 02138, USA
    Cortex 42:540-62. 2006
    ....
  20. pmc Spatiotemporal dynamics of modality-specific and supramodal word processing
    Ksenija Marinkovic
    Athinoula A Martinos Center for Biomedical Imaging, Charlestown, MA 02129, USA
    Neuron 38:487-97. 2003
    ..Comparison of response patterns during repetition priming between the two modalities suggest that they are initiated by modality-specific memory systems, but that they are eventually elaborated mainly in supramodal areas...
  21. ncbi request reprint Automatically parcellating the human cerebral cortex
    Bruce Fischl
    Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, MGH MIT Harvard Medical School, Massachusetts General Hospital, 13th Street, Charlestown, MA 02129, USA
    Cereb Cortex 14:11-22. 2004
    ..Examples are given from two different training sets generated using different neuroanatomical conventions, illustrating the flexibility of the algorithm. The technique is shown to be comparable in accuracy to manual labeling...
  22. pmc The challenge of connecting the dots in the B.R.A.I.N
    Anna Devor
    Department of Neurosciences, University of California San Diego, La Jolla, CA 92093, USA Department of Radiology, University of California San Diego, La Jolla, CA 92093, USA Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA Electronic address
    Neuron 80:270-4. 2013
    ..Here, we outline our collective vision for what we can achieve within a decade with properly targeted efforts and discuss likely technological deliverables and neuroscience progress. ..
  23. ncbi request reprint Developmental instability and the neural dynamics of the speed-intelligence relationship
    Robert J Thoma
    Center for Neuropsychological Services, Department of Psychiatry, 915 Vassar NE, 1 University of New Mexico, Albuquerque, NM 87131 0001, USA
    Neuroimage 32:1456-64. 2006
    ..These observations suggest that fluid intelligence is primarily related to speed during processing associated with decision time, while fluctuating asymmetry predicted slower processing across all stages of information processing...
  24. ncbi request reprint Laminar analysis of human neocortical interictal spike generation and propagation: current source density and multiunit analysis in vivo
    Istvan Ulbert
    Department of Neurosurgery, Stanford University Medical Center, Stanford, California, USA
    Epilepsia 45:48-56. 2004
    ....
  25. ncbi request reprint Responses of human anterior cingulate cortex microdomains to error detection, conflict monitoring, stimulus-response mapping, familiarity, and orienting
    Chunmao Wang
    Comprehensive Epilepsy Center, New York University School of Medicine, New York, New York 10016, USA
    J Neurosci 25:604-13. 2005
    ..These data suggest that each anterior cingulate microdomain participates in a multilobar cortical network after behavioral responses in a variety of tasks...
  26. pmc Objective phonological and subjective perceptual characteristics of syllables modulate spatiotemporal patterns of superior temporal gyrus activity
    Richard E Frye
    Division of Child and Adolescent Neurology, University of Texas Health Science Center at Houston, Houston, TX, USA
    Neuroimage 40:1888-901. 2008
    ..Moreover, our results demonstrate that both objective phonological and subjective perceptual characteristics of syllables independently modulate spatiotemporal patterns of cortical activation...
  27. doi request reprint Regional neocortical thinning in mesial temporal lobe epilepsy
    Carrie R McDonald
    Department of Psychiatry, and Multimodal Imaging Laboratory, University of California, San Diego, CA 92093 0841, USA
    Epilepsia 49:794-803. 2008
    ..To determine the nature and extent of regional cortical thinning in patients with mesial temporal lobe epilepsy (MTLE)...
  28. ncbi request reprint Properties of in vivo interictal spike generation in the human subiculum
    Dániel Fabó
    Institute for Psychology, Hungarian Academy of Sciences, 1068 Budapest, Szondi u 83 85, Hungary
    Brain 131:485-99. 2008
    ..Limited data suggest that subiculum might even play a pacemaker role in the generation of paroxysmal discharges...
  29. pmc Linear coding of voice onset time
    Richard E Frye
    University of Texas Health Science Center at Houston, TX 77030, USA
    J Cogn Neurosci 19:1476-87. 2007
    ....
  30. pmc A novel integrated MEG and EEG analysis method for dipolar sources
    Ming Xiong Huang
    Department of Radiology, University of California, San Diego, San Diego, CA 92121, USA
    Neuroimage 37:731-48. 2007
    ..We then demonstrated that this new approach performed reliably in an analysis of the 20-ms component from human somatosensory responses elicited by electric median-nerve stimulation...
  31. ncbi request reprint What vs. where in touch: an fMRI study
    Catherine L Reed
    Department of Psychology, University of Denver, 2155 S Race St, Denver, CO 80208, USA
    Neuroimage 25:718-26. 2005
    ..LOC activated bilateral superior parietal areas involved in spatial processing. The dissociation of object and spatial processing streams appears to be a modality general organizational principle in the brain...
  32. ncbi request reprint Laminar population analysis: estimating firing rates and evoked synaptic activity from multielectrode recordings in rat barrel cortex
    Gaute T Einevoll
    Department of Mathematical Sciences and Technology, Norwegian University of Life Sciences, PO Box 5003, N 1432 As, Norway
    J Neurophysiol 97:2174-90. 2007
    ..Furthermore, the time dependence of the stimulus-evoked population firing activity is predicted, and the temporal ordering of response onset is found to be compatible with earlier findings...
  33. pmc Subcortical and cerebellar atrophy in mesial temporal lobe epilepsy revealed by automatic segmentation
    Carrie R McDonald
    Department of Psychiatry, University of California, San Diego, United States
    Epilepsy Res 79:130-8. 2008
    ..To determine the validity and utility of using automated subcortical segmentation to identify atrophy of the hippocampus and other subcortical and cerebellar structures in patients with mesial temporal lobe epilepsy (MTLE)...
  34. pmc Specific increase of human entorhinal population synaptic and neuronal activity during retrieval
    Susanne Knake
    Athinoula A Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
    Neuroimage 37:618-22. 2007
    ..A double-dissociation of these responses with simultaneously recorded lateral inferotemporal recordings suggests that entorhinal cortex may be specifically engaged during retrieval, across multiple memory types and materials...
  35. ncbi request reprint In vivo laminar electrophysiology co-registered with histology in the hippocampus of patients with temporal lobe epilepsy
    Istvan Ulbert
    Institute of Experimental Medicine of the Hungarian Academy of Sciences, Budapest 1450, Hungary
    Exp Neurol 187:310-8. 2004
    ..Electrophysiological identification of the functional state of the hippocampus together with its local structural correlates could further enhance our understanding of this disease...
  36. ncbi request reprint Neural substrates of tactile object recognition: an fMRI study
    Catherine L Reed
    Department of Psychology, University of Denver, Denver, Colorado 80208, USA
    Hum Brain Mapp 21:236-46. 2004
    ..It challenges the results of previous studies that emphasize the role of visual cortex rather than somatosensory association cortices in higher-level somatosensory cognition...
  37. ncbi request reprint Reduction in distractibility with AF102B and THA in the macaque
    JOSEPH O'NEILL
    University of California Los Angeles Neuropsychiatric Institute 47 417A, 760 Westwood Plaza, Los Angeles, CA 90024 1759, USA
    Pharmacol Biochem Behav 76:301-6. 2003
    ..Reaction time at best dose decreased for both drugs, but not significantly. Muscarinic agonists and cholinesterase inhibitors may reduce distractibility in primates...
  38. ncbi request reprint The relationship of regional frontal hypometabolism to executive function: a resting fluorodeoxyglucose PET study of patients with epilepsy and healthy controls
    Carrie R McDonald
    Multimodal Imaging Laboratory, University of California, San Diego, La Jolla, CA, USA
    Epilepsy Behav 9:58-67. 2006
    ....