LazarJohnGreenfieldJr.MD

Neurology • Farmington, CT

Epilepsy, Neurophysiology

Professor and Chairman, Department of Neurology, University of Arkansas for Medical Sciences

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Office
263 Farmington Ave
Farmington, CT 06030
Phone+1 860-679-4888

Fax+1 860-679-0131
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Education & Training

University of Michigan Health SystemFellowship, Clinical Neurophysiology, 1997 - 1998
University of Michigan Health SystemResidency, Neurology, 1990 - 1993
University of Michigan Health SystemInternship, Internal Medicine, 1989 - 1990
University of Virginia School of MedicineClass of 1989, MD, PhD

Certifications & Licensure

CT State Medical License 2016 - 2024
AR State Medical License 2010 - 2016
MI State Medical License 1991 - 2013
OH State Medical License 1999 - 2013
American Board of Psychiatry and Neurology Neurology
American Board of Psychiatry and Neurology Clinical Neurophysiology

Publications & Presentations

PubMed

5 citations
Vulnerability of cholecystokinin-expressing GABAergic interneurons in the unilateral intrahippocampal kainate mouse model of temporal lobe epilepsy.
Young-Jin Kang, Ethan M. Clement, In-Hyun Park, Lazar John Greenfield, Bret N. Smith, Sang-Hun Lee> ;Experimental Neurology. 2021 Apr 26
25 citations
Mild COVID-19 infection despite chronic B cell depletion in a patient with aquaporin-4-positive neuromyelitis optica spectrum disorder.
Marina A. Creed, Enrique Ballesteros, L. John Greenfield, Jaime Imitola> ;Multiple Sclerosis and Related Disorders. 2020 May 19
3 citations
The critical role of persistent sodium current in hippocampal gamma oscillations.
Young-Jin Kang, Ethan M. Clement, Stefan L. Sumsky, Yangfei Xiang, In-Hyun Park, Sabato Santaniello, Lazar John Greenfield, Edgar Garcia-Rill, Bret N. Smith, Sang-Hun Lee> ;Neuropharmacology. 2020 Jan 1
7 citations
Group I metabotropic glutamate receptors generate two types of intrinsic membrane oscillations in hippocampal oriens/alveus interneurons
Gubbi Govindaiah, Young-Jin Kang, Hannah Elisabeth Smashey Lewis, Leeyup Chung, Ethan M. Clement, Lazar John Greenfield, Edgar Garcia-Rill, Sang-Hun Lee> ;Neuropharmacology. 2018 Sep 1
10 citations
Cell Type-specific Intrinsic Perithreshold Oscillations in Hippocampal GABAergic Interneurons.
Young-Jin Kang, Hannah Elisabeth Smashey Lewis, Mason William Young, Gubbi Govindaiah, Lazar John Greenfield, Edgar Garcia-Rill, Sang-Hun Lee> ;Neuroscience. 2018 Apr 15
Commentary: Forced thinking about hypercognitive seizures
L. John Greenfield, Andrea S. Synowiec> ;Epilepsy Research. 2017 Aug 1
19 citations
Telemedicine Interest for Routine Follow-Up Care Among Neurology Patients in Arkansas.
Maryam Bashiri, L. John Greenfield, Alison Oliveto> ;Telemedicine Journal and e-Health. 2016 May 25
48 citations
Pilocarpine-induced status epilepticus in mice: A comparison of spectral analysis of electroencephalogram and behavioral grading using the Racine scale
Kevin D. Phelan, U.T. Shwe, David K. Williams, L. John Greenfield, Fang Zheng> ;Epilepsy Research. 2015 Nov 1
5 citations
Ictal asystole in epilepsy patients undergoing inpatient video-EEG monitoring
Bashir Shihabuddin, Aline Herlopian, L. John Greenfield> ;Neurosciences. 2014 Oct 1
Commentary.
Greenfield LJ> ;J Neurosci Rural Pract. 2014-04-01
12 citations
Development of the sexually dimorphic nucleus of the preoptic area and the influence of estrogen-like compounds.
Zhen He, Sherry A. Ferguson, Li Cui, Lazar John Greenfield, Merle G. Paule> ;Neural Regeneration Research. 2013 Oct 15
8 citations
Role of neural stem cell activity in postweaning development of the sexually dimorphic nucleus of the preoptic area in rats.
Zhen He, Sherry A. Ferguson, Li Cui, L. John Greenfield, Merle G. Paule> ;Plos One. 2013 Jan 30
17 citations
Ischemia-induced increase in microvascular phosphodiesterase 4D expression in rat hippocampus associated with blood brain barrier permeability: effect of age.
Zhen He, Bei He, Brian L Behrle, M. Phillip C. Fejleh, Li Cui, Merle G. Paule, L. John Greenfield> ;ACS Chemical Neuroscience. 2012 Jun 20
7 citations
Hypoxia enhances high-voltage-activated calcium currents in rat primary cortical neurons via calcineurin
Kun Xiang, Damien E. Earl, Trisha Dwyer, Brian L. Behrle, Elizabeth I. Tietz, L. John Greenfield> ;Epilepsy Research. 2012 May 1
68 citations
Heteromeric Canonical Transient Receptor Potential 1 and 4 Channels Play a Critical Role in Epileptiform Burst Firing and Seizure-Induced Neurodegeneration
Kevin D. Phelan, Matthew M. Mock, Oliver Kretz, U Thaung Shwe, Maxim Kozhemyakin, L. John Greenfield, Alexander Dietrich, Lutz Birnbaumer, Marc Freichel, Veit Flockerz...> ;Molecular Pharmacology. 2012 Mar 1
8 citations
Post-hypoxic changes in rat cortical neuron GABAA receptor function require L-type voltage-gated calcium channel activation
Liping Wang, L. John Greenfield> ;Neuropharmacology. 2009 Jan 1
22 citations
Chronic Benzodiazepine Administration Potentiates High Voltage-Activated Calcium Currents in Hippocampal CA1 Neurons
Kun Xiang, Damien E. Earl, Kathleen M. Davis, David R. Giovannucci, L. John Greenfield, Elizabeth I. Tietz> ;The Journal of Pharmacology and Experimental Therapeutics. 2008 Dec 1
27 citations
Benzodiazepine Withdrawal-Induced Glutamatergic Plasticity Involves Up-Regulation of GluR1-Containing α-Amino-3-hydroxy-5-methylisoxazole-4-propionic Acid Receptors in...
Jun Song, Guofu Shen, L. John Greenfield, Elizabeth I. Tietz> ;The Journal of Pharmacology and Experimental Therapeutics. 2007 Aug 1
162 citations
Surgeon age and operative mortality in the United States.
Jennifer F. Waljee, Lazar J. Greenfield, Justin B. Dimick, John D. Birkmeyer> ;Annals of Surgery. 2006 Sep 1
133 citations
Neurologic complications after surgery for obesity.
Boyd M. Koffman, L. John Greenfield, Imran I. Ali, Noor A. Pirzada> ;Muscle & Nerve. 2006 Feb 1
113 citations
Proficiency of Surgeons in Inguinal Hernia Repair: Effect of Experience and Age
Leigh Neumayer, Atul A. Gawande, Jia Wang, Anita Giobbie-Hurder, Kamal M.F. Itani, Robert J. Fitzgibbons, Domenic J. Reda, Olga Jonasson, Lawrence W. Way, Lazar J. Gre...> ;Annals of Surgery. 2005 Sep 1
35 citations
Gonadal steroids regulate GABAA receptor subunit mRNA expression in NT2-N neurons.
Rebecca C. Pierson, Anne M. Lyons, L. John Greenfield> ;Brain Research. Molecular Brain Research. 2005 Aug 18
15 citations
Activation of protein kinase C reduces benzodiazepine potency at GABAA receptors in NT2-N neurons.
Lei Gao, L. John Greenfield> ;Neuropharmacology. 2005 Mar 1
15 citations
Hypoxia alters GABAA receptor function and subunit expression in NT2-N neurons
Lei Gao, Anne R Lyons, L. John Greenfield> ;Neuropharmacology. 2004 Mar 1
106 citations
The Leapfrog Volume Criteria May Fall Short in Identifying High-Quality Surgical Centers
Caprice K. Christian, Michael L. Gustafson, Rebecca A. Betensky, Jennifer Daley, Michael J. Zinner, Lazar J. Greenfield, Robert S. Rhodes> ;Annals of Surgery. 2003 Oct 1
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Hospital Affiliations

UConn, John Dempsey HospitalFarmington, Connecticut