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Ronald M. Lazar, PhD

  • Professor of Neuropsychology (in Neurology and Neurological Surgery) at CUMC
Ronald M. Lazar, PhD

Dr. Ronald M. Lazar is Professor of Neuropsychology in Neurology and Neurological Surgery and Director of the Richard & Jenny Levine Cerebral Localization Laboratory at the Neurological Institute at the Columbia University Medical Center in New York City. He is also a Professional Neuropsychologist on the Stroke Service at the NewYork-Presbyterian Hospital.

Dr. Lazar received his undergraduate degree from New York University and his PhD degree at Northeastern University. Postdoctoral training occurred at Georgetown University and at the Eunice Kennedy Shriver Center in Massachusetts. Following his Andrew W. Mellon Fellowship in the Department of Neurology at Memorial Sloan-Kettering Cancer Center, he became the Director of Psychology. He then joined the Department of Neurology at SUNY/Downstate Medical Center in Brooklyn as Director of the Neuropsychology Service and at Kings County Hospital Center. He came to Columbia in 1993.

Dr. Lazar specializes in the relationship of cognitive function and brain disease and other illnesses, with emphasis on language, memory, reasoning and perception. Dr. Lazar's clinical research has been funded by the National Institute of Neurological Disorders and Stroke, the National Heart Lung and Blood Institute, the National Institute of Child Health and Human Development, the National Institute of Allergy and Infectious Diseases, the Langeloth Foundation, and other agencies. His publications have appeared in Neurology, Stroke, The New England Journal of Medicine, Nature, Archives of Neurology, Neurosurgery, Neuropsychologia, Circulation, Annals of Thoracic Surgery, Archives of Clinical Neuropsychology, and numerous other international journals . Co-authored with Dr. J. Festa, his book Neurovascular Neuropsychology (Springer) was published in 2009. He has testified before the US House of Representatives Select Committee on Aging. He currently serves on the Mechanical Circulatory Support Advisory Panel for the Center for Diseases and Radiological Health at the Federal Food and Drug Administration (FDA), and is a chartered member of the Acute Neural Injury and Epilepsy (ANIE) Study Section of the National Institutes of Health. He was editor-in-chief of Neuropsychology Review, which has the highest journal Impact Rating in his field. He also serves on the Editorial Review Board of the journal Stroke.

I specialize in the relationship between brain disease/injury and cognitive functions, such as language, memory, perception, attention and executive skills.

A clinical research unit is dedicated to investigation of the behavioral outcomes of strokes and related vascular diseases. Computerized assessment of stroke patients' behaviors, functional magnetic resonance imaging, superselective arterial amobarbital (Wada) testing, and transcranial doppler ultrasonography allow measurement of cerebral plasticity with the principal focus on the brain's abilities to compensate for injury.

Departmental Appointments

  • Department of Neurology
    Division of Stroke and Cerebrovascular Disease

Areas of Expertise

  • Neuropsychology
  • Neurovascular Disease
  • Neuropsychological Assessment
  • Neuropsychological Testing
  • Neurological Rehabilitation
  • Rehabilitation After Brain Injury
  • Stroke Rehabilitation

Education & Training

  • Northeastern University
  • Fellowship: Memorial Sloan-Kettering Cancer Center, NY


  • Neurological Institute of New York

    710 West 168th Street
    Room: 6-605
    New York, NY 10032
    (212) 305-4749


  • Neuropsychology Service

Provider Affiliations

  • NewYork-Presbyterian/Columbia

This provider accepts new patients

Appointment Phone Number: (212) 305-4749

Past Positions

  • 8/1984 – 5/1993: SUNY/Downstate Medical Center, Department of Neurology - Assistant Professor of Neurology and Psychiatry, Director of Neuropsychology
  • 8/1984 – 5/1993: Kings County Hospital Center, Department of Psychology - Chief Psychologist, and Director of Neuropsychological Services
  • 7/1983 – 6/1984: Memorial Sloan-Kettering Cancer Center, Psychiatry Service, Department of Neurology - Assistant Attending Psychologist
  • 7/1983 – 6/1984: Cornell University Medical College, Department of Psychiatry - Adjunct Assistant Professor of Psychology (Psychiatry)
  • 7/1983 – 6/1984: New York Hospital, Department of Psychiatry - Assistant Attending Psychologist
  • 2/1980 – 6/1984: Queens College of CUNY and Graduate Center of CUNY, Department of Psychology, Divisions of Neuropsychology and Learning Processes - Assistant Professor of Psychology
  • 2/1982 – 6/1983: Memorial Sloan-Kettering Cancer Center, Psychiatry Service, Department of Neurology - Adjunct Attending Psychologist


1.      Cicerone, K.D., Lazar, R.M., Penman, D., Shapiro, W.R.: Mediating processes during concept formation by adults with cerebral lesions. Society of Neuroscience Abstracts, 8:920, 1982.

2.       Lazar, R.M., Scarisbrick, D., Kuslansky, G.: Cerebral symmetry of visual equivalence classes. Society of Neuroscience Abstracts, 9:652, 1983.

3.      Walker, R.W., Lazar, R.M., Gralla, R.J., Scher, J.I., Shank, B.: Neuropsychological abnormalities in long-term survivors of small cell lung cancer receiving prophylactic cranial irradiation. Proceedings of the American Society of Clinical Oncology, 4:187, l985.

4.       Lazar, R.M., Weiner, M., Kula, R.W.: Visuoconstructive deficit following infarction in the right basal ganglia. Archives of Clinical Neuropsychology, 1:54,1986.

5.       Lazar, R.M., Tamaroff, M., Walker, R.W.: Neuropsychologic consequences of right frontal lobectomy in a pediatric patient. Archives of Clinical Neuropsychology, 1:228,         1986.

6.      Shafran, B., Cracco, J.B., Cracco, R.Q., Fisch, G.S., Maccabee, P.J., Lazar, R.M.: Effect of tinted lenses on visual evoked potentials. Journal of Clinical Neurophysiology, 6: 343, 1989.

7.       Lazar, R.M., Vas, G.M., Hotson, G.C., Sher, J.: Mixed transcortical aphasia from demyelinating disease: Neuropsychologic, MRI, and neuropathologic data.  Archives of Clinical Neuropsychology, 5:183, 1990.

8.   Vogt, W., Lazar, R.M., Kula, R.W., Harashima, T., Bhagavati, S., Poiese, B.J.: Treatment of HTLV-1 associated chronic progressive myelopathy with AZT. Annals of Neurology, 28:280, 1990.

9.        Lazar, R.M., Yellin, S., Duffy, E.M., Handt, J., Landesman, S.H., DeHovitz, J.S., Bromberg, J.S.: Establishing a normative base for the study of HIV dementia in the inner city. Journal of the Association of Academic Minority Physicians, 1:105,1990.

10.    Paradis, C.M., Friedman, S., Lazar, R.M., Grubea, J., Kesselman, M.: Panic disorder in an inner-city psychiatric outpatient department. American Psychiatric Association Abstracts, 144:137,1991.

11.    Binder, J.R., Lazar, R.M., Tatemichi, T.K., Mohr, J.P., Desmond, D.W., Ciecierski, K.A.: Left hemiparalexia: Tachistoscopic studies. Neurology, 41:409,1991.

12.    Marshall, R.S., Binder, J.R., Lazar, R.M., Benjamin, J.L., Mohr, J.P.:Distinct syndromes of hemineglect. Annals of Neurology (Abstr), 30:239,1992.

13.    Jaret, J.S., Strashun, A., Lazar, R.M.:Serial SPECT studies in carotid artery stump syndrome. Journal of Neuroimaging, 2:56,1992.

14.    Marshall, R.S., Binder, J.R., Lazar, R.M., Benjamin, J.L., Mohr, J.P.: The effect of lesion size and location on hemineglect. Neurology, 42:223,1992.

15.     Lazar, R.M., Binder, J.R., Benjamin, J.L., Mohr, J.P.: The measurement of hemineglect in aphasic patients, Neurology, 42:222, 1992.

16.    Gordon, M.F., Franklin, M., deLeon, D., Warburton, D., Seely, R., Phillips, P., Asaikar, S., Maccabee, P., Lazar, R., Sinha, K., Yeboa, K., Pearl, M., Fahn, S., Brin, M.F., Dystonia in two patients with deletion of 18p, Neurology, 42:239,1992.

17.    Binder, J.R., Lazar, R.M. Marshall, R.S., Mohr, J.P.: Quadrantic neglect. Neurology,42:224, 1992.

18.    Marshall, R.S., Pullman, S.L., Mohr, J.P., Lazar, R.M., Mirski, D.F.: Directional reaction-time effects from cortical and subcortical strokes. Annals of Neurology, 34:284,1993.

19.    Marshall, R.S., Lazar, R.M., Van Heertum, R.L., Esser, P.D., Nour, R., Mohr, J.P.:A SPECT activation study of visual-spatial function in normals. Neurology, 44 (Suppl 2): 242, 1994.

20.    Thompson, J.L.P., Fleiss, J., James, K., Lazar, R.M., Marshall, R.S., Chin, K., Mohr, J.P.: A test of an algorithm for simulating prothrombin times  in a double-            blind anticoagulation drug trial.  Annals of Neurology , 1994, 36:305-306,1994.

21.    Marshall, R.S., Lazar, R.M., Hacien-Bey, L., Pile-Spellman, J., Young, W.L.:Xe-CBF changes correlate with a simple sustained attention task in carotid       balloon test occlusions. Neurology, 46:A302, 1996.

22.     Lazar, R.M., Marshall, R.S., Pile-Spellman, J., Hacien-Bey, L., Young, W.L., Mohr, J.P., Stein, B.M.: Intrahemispheric translocation of language in patients with left cerebral AVMs. Neurology, 46:A369, 1996.

23.    MacGowan, D.J.L., Mohr, J.P., Sacco, R.L., Lazar, R.M., Clark, C., Janal, M., Wharton, R.: Central pain of the Dejerine-Roussy type is a frequent complication of lateral medullary infarction: A clinical and MRI study of 52 patients. Neurology, 46:A302, 1996.

24.     Lazar, R.M., Connaire, C., Pile-Spellman,J., Hacein-Bey, L., Solomon, R.A., Sisti, M.B., Mohr, J.P.: Developmental learning disorders in patients with cerebral AVMs. Journal of the International Neuropsychological Society, 3:62, 1997.

25.     Marshall, R.S., Lazar, R.M., Young, W.L., Hacein-Bey, L., Pile-Spellman, J., Mohr, J.P.:Real time behavioral and physiological monitoring of cerebral ischemia in awake carotid balloon test occlusions. Neurology, 48:A158, 1997.

26.     Roberts, J.K., Lazar, R.M., Marshall, R.S., Gardocki, M., Oz, M.C. Rose, E., Mohr, J.P.: Cerebral dysfunction from reversible global hypoperfusion. Neurology, 48:A405, 1997.

27.       Lazar, R.M., Marshall, R.S., Pile-Spellman, J., Hacein-Bey, L., Young, W.L.,  Mohr, J.P.: Unpredictable redistribution of higher cerebral function in patients with AVM. Neurology, 48:A292, 1997.

28.    Lazar, R.M., Marshall, R.S., Duong, H., Perera, G.M., Pile-Spellman, J., DeLaPaz, R.L., Hacein-Bey, L.,Young, W.L., Vang, M., Mohr, J.P.: Cerebral migration of language in arteriovenous malformation, Interventional Neuroradiology,:94, 1997.

29.     Lazar, R.M., Marshall, R.S., Pile-Spellman, J.P., Hacein-Bey, L., Young, W.L., DeLaPaz, R.L., Perera, G.M., Mohr, J.P.: Language re-organization in cerebral AVM using Superselective Wada testing and fMRI.  Journal of the International Neuro-psychological Society, 4:98, 1998.

30.       Marshall, R.S., Pile-Spellman, J., Mohr, J.P., Lazar, R.M., Hacein-Bey, L., Duong, D.H., Vang, M.C., Ostapovich, N., Joshi, S., Young, W.L.: The time course and functional significance of circle of Willis collateral formation. Neurology, 50:A77, 1998

31.     Krakauer, J.W., Marshall, R.S., Lazar, R.M.: Line bisection error in hemineglect depends on context: A case report.  Neurology, 50:A163, 1998

32.     Lazar, R.M, Perera, G.M., Marshall, R.S., DeLaPaz, R.L., Mohr, J.P., Krakauer, J.W. The evolution of fMRI activation following pure motor stroke. Neurology, 50: A402-403, 1998.

33.     Joshi, S., Young, W.L., Pile-Spellman, J., Duong, H., Vang, M., Marshall, R., Lazar, R., Ostapkovich, N. Augmentation of cerebral blood flow by intracarotid papaverine during internal carotid artery occlusion.  Journal of Neurosurgical Anesthesiology, 10, 267, 1998.

34.     Lazar, G.S., Sisti, M.B., Van Heertum, R., Eidelberg, D., Lazar, R.M.: Alzheimer=s disease without amnesia: Neuropsychological and PET findings with biopsy verification. Archives of Clinical Neuropsychology, 14, 9-10, 1999.

35.     Lazar, R.M., Marshall, R.S., Roberts., J.K., Chen, X., Gardocki, M.C., Oz, M.C., Rose, E., Mohr, J.P. Using continuous performance for real-time detection of global cerebral ischemia, Journal of the International Neuropsychological Society, 5:130, 1999.

36.    Marshall, R.S., Lazar, R.M., Pile-Spellman, J., Duong, D.H., Ostapkovich, J., Joshi, S., Young, W.L.:Hyperacute recovery of higher cerebral function during awake carotid balloon test occusions. Stroke, 30:261, 1999.

37.     Marshall, R.S., Lazar, R.M., Mohr, J.P., Pile-Spellman, J., Duong, H.H., Ostapkovich, N., Joshi, S.,Young, W.L.: Alteration of higher cerebral function during induced hyperacute ischemia, Neurology, 52 (Suppl2):A565,1999.

38.      Alsaadi, T., Binder, J.R., Lazar, R.M., Doorani, J.P., Mohr, J.P.: Pure topographical disorientation: A distinctive syndrome with varied localization.Neurology, 52 (Suppl2):A235,1999.

39.      Heyer, E.J., Sharma, R., Stern, Y., Lazar, R.M., Quest, D.O., Todd, G.J., Solomon, R.A., McCormick, P.C., McMurtry, J.G., Riedel, C.J., Choudri, T., Mocco, J., Connolly, E.S.: Comparison of cognitive performance in patients having carotid endarterectomy versus spine surgery, 1999.

40.      Duong, H., Lazar, R.M., Pile‑Spellman, J.M., Aagaard, B., Brunson, J., Young, W.L.,Mohr, J.P., To, J. K. Effect of embolization on focal neurological deficits caused by cerebral dural AVMs, Proceedings of the American Society of Interventional and Therapeutic Neuradiology, 305, 1999.

41.     Lazar, R.M. Mohr, J.P., Marshall, R.S. Reversible ischemic amnestic syndrome. Journal of the International Neuropsychological Society, 6, 225, 2000.

42.      Lazar, R.M., Marshall, R.M., Young, W.L., Shah, J., Constantine, R.C., Robinson, J.: Experimental re- induction of former stroke deficits with IV midazolam. Neurology, 54 (Suppl 3), A42, 2000.

43.     Marshall, R.S., Lazar, R.M., Duong, D.H., Brunson, J., Young, W.L., Solomon, R.S., Pile-Spellman, J.:CBF and enhanced clinical testing predict outcome after therapeutic internal carotid artery occlusion, Neurology, 54 (Suppl 3), A63, 2000.

44.    Marshall, R.S., Sproule, D.M., Rudnik, T., Fitzsimmons, B-F. M., Roque, R.M., Lazar, R.M.: Impaired cerebral reactivity correlates with recent symptomaticity in severe carotid artery disease, Stroke, 32, 350,2001.

45.     Lazar, R.M., Marshall, R.S., Mohr, J.P., Young, W.L., Pile-Spellman, J.: Unanticipated memory loss during superselective Wada testing for right cerebral arteriovenous malformation. Stroke, 32, 337-338, 2001.

46.     Wright, C.B., Scarmeas, N., Perera, G.M., Lazar, R.M., Fitzsimmons, B-F.M., Labovitz, D., Stapf, C., Benson, R., Robinson, J.V., Marshall, R.S.: Cognitive function measures added to the NIH Stroke Scale improves correlation with acute stroke volume. Neurology, 56 (Suppl 3) A436-437, 2001.

47.     Fitzsimmons, B-F.M., Bagga, R., Pile-Spellman, J., Marshall, R.S., Lazar, R.M.: Reversible pharmacological lesions techniques applied to the study of neurobehavior in humans. Neurology, 56 (Suppl 3);A51, 2001.

48.     Marshall, R.S., Fitzsimmons, B-F.M., Lazar, R.M., Rudnik, T., Sia, R.M., Robinson, J. Cerebrovascular vasoreactivity in patients with severe carotid artery disease: A comparison of two methods. Neurology, 56 (Suppl 3); A170A-171, 2001.

49.     Lazar, R.M., Fitzsimmons, B-F.M., Marshall, R.S., Berman, M.F., Bustillo, M.A., Robinson, J., Liff, J.  Re- emergence of transient neurological deficits with midazolam challange. Neurology, 56 (Suppl 3); A162-163, 2001.

50.     Bagga, R.S., Fitzsimmons, B.-F., Pile-Spellman, J., Marshall, R., Lazar, R.: Dissociative effects of amobarbital and lidocaine in superselective Wada testing prior to embolization of AVM=s. Proceedings of the American Society for Neuroradiology, p. 301, 2001.

51.    Lazar, R.M., Heitjan, D.H., P Leone, P.,D'Alessandro, D.A., Gupta, L., Gelijns, A.C., Moskowitz, A.J., Tierney, A., Shapiro, P.A., Esrig, B.C., Asher, A., Isidro, A., Rose, E.A., Ting, W., Oz, M.C.: Randomized trial of on‑ vs. Off‑pump CABG reveals baseline memory dysfunction, Circulation, 104;Supplement II, ii-815, 2001.

52.    Lazar, R.M., Marshall, R.S., Bagga, R.S., Sattenberg, R.J., Pile-Spellman, J.  Verbal memory loss following superselective Wada testing in right cerebral AVM. Journal of the International Neuropsychological Society, 8:275, 2002.

54.    Lazar, R.M., Fitzsimmons, B.-F., Berman, M.F., Marshall, R.S.  Systematic re-induction of formerstroke deficits with intravenous midazolam.  Journal of the International Neuropsychological Society, 8:318, 2002.

55.    Schumacher, H.C., Lazar, R.M., Stapf, C., Marshall, R.S., Hartmann, A., Mast, H., Mohr, J.P., Pile-Spellman, J.  Neurologic outcome in endovascular embolization for brain arteriovenous malformations (AVMs), Neurology, 58 (Suppl 3): A192, 2002.

56.    Lazar, R.M., W. Dembitsky, W. Piccione, S. Pamboukian, S. Furukawa, G. Couper, F. Pagani, A. Keller, G.M. Mullen, S. Kreuger, S. Ormaza, S. Chillicott.  Neurological Events in LVAD destination therapy: The REMATCH data.  Circulation, 106;Supplement II, II-608, 2002.

57.    Marshall, R.S., Philip M Meyer, P.M., Connolly, E.S., Mohr, J.P., Lazar, R.M., Rundek, T. Delayed Return of Cerebrovascular Reactivity after Endarterectomy or Angioplasty. Stroke, 34:271, 2003.

58.    Lazar, R.M., Oz, M.C., Kherani, A, Marshall, R.S., Kurlansky, P., Gelijns, A.C., Moskowitz, A.J., Gupta, L., Tierney, A., DeLaPaz, R.L., Rose, E.A.  Diffusion-weighted Imaging of the brain following on- vs. off-pump CABG.  Stroke, 34:321-322, 2003.

59.     Festa, J., Lazar, R.M., Marshall, R.S., Berman, M.F., Fitzsimmons, B.-F., Liff, J.  Provoking former cognitive deficits after stroke recovery with scopolamine, Neurology, 60 (Suppl 1), A33, A370-A371, 2003.

60.    Marshall, R.S., Krakauer, J.W., Lazar, R.M., Chong, J., Callahan, S., Wydra, J., Hirsch, J. Hemispheral hypoperfusion alone can induce cross-hemispheral reorganization in the brain.  Neurology, 60 (Suppl 1), A33, 2003.

61.   Lazar, R.M.  Perrine, K.R., Speizer, A.E., Kreiter, K.T., Festa, J. Petrucci, R.J., Brown, G.G.  Neurovascular Neuropsychology, Proceedings of the 32nd Annual Meeting of the International Neuropsychological Society, 159, 2004.

62.  Lazar, R.M.  Berman, M.F., Liff, J.  Provoking Former Behavioral Deficits after Stroke Recovery with Neurochemical Challenge,  Proceedings of the 32nd Annual Meeting of the International Neuropsychological Society, 159, 2004.

63.  Kreiter, K. T., Lazar, R.M., Marshall, R.S., Peery, S., Festa, J., Mayer, S.  Cognitive Recovery after Subarachnoid Hemorrhage is Associated with Improvements in Functional Ability, Mood and Quality of Life, Proceedings of the 32nd Annual Meeting of the International Neuropsychological Society, 94, 2004.

64.  Marshall, R.S., Krakauer, J.W., Radoeva, P., Wydra, J., Lazar, R.M., Hirsch.  Hemispheric hemodynamic impairment in the absence of stroke induces fmri activation in the opposite hemisphere, Neurology, 62 (Suppl 5), A541, 2004.

65.  Speizer, A.E., Lazar, R.M., Marshall, R.S., Pile-Spellman, J., Bernardini, G.L.  Parallelism is amusia and aphasia in a professional conductor following left parietal hemorrhage.  Proceedings of the 33nd Annual Meeting of the International Neuropsychological Society, in press, 2005.

66.  Festa, J.R., Lazar, R.M., Marshall, R.S. Connolly, E.S.  Reversal of hemodynamic failure improves neuropsychological function in Moya‑Moya Disease. Proceedings of the 33nd Annual Meeting of the International Neuropsychological Society, in press, 2005.

67.  Marshall, R.S., Krakauer, J.W., Radoeva, P., Farwell, M., Prager, A., Festa, J.R., Hirsch, J., Lazar, R.M.  Impaired cerebral vasoreactivity affects the fmri motor activation pattern in the opposite hemisphere in patients with unilateral large‑vessel disease, Stroke, 36:453, 2005.

68.  Lazar, R.M., Speizer, A.E., Handy, C.,  Festa, J.R., Radoeva, P., Krakauer, J.W.,  Marshall, R.S.,  Aphasia severity and lesion location are not sufficient to predict aphasia recovery at 90 days.  Neurology, 64, (Suppl 1), A353-A354, 2005.

69.   Prabhakaran, Krakauer, J.W., Riley, C., Lazar, R.M., Marshall, R.S., Speizer, A., Chong, J. Divergent Patterns of Recovery from Dense Arm Paresis, Neurology, 66, (Suppl 2), A297, 2006.

70.  Marshall, R.S., Krakauer, J.W., O'Brien, K., Speizer, A., Festa, J.R., Lazar, R.M.  Tracking recovery of the  unaffected  hand after stroke: Preliminary data from the Columbia SPOTRIAS project. Neurology, 66, (Suppl 2), A297, 2006.

71.  Marshall, R.S., Ferrera, J., Zhang, X., Barnes, A., O=Brien, K.., Lazar, R.M., Hirsch, J. Stimulation therapy of the visual borderzone in hemianopics induces visual field‑specific alterations 226 W‑PM in the temporal lobe. Journal of Cerebral Blood Flow and Metabolism, 2006

72.  Krakauer, J.W., Zarahn, E., Lazar, R.M., Marshall, R.S. "Likelihood to Recover" in Acute Stroke. Stroke, 38, 520, 2007

73.  Festa, J.R., Lazar, R.M., Marshall, R.M., Crawford, A.E., Geller, A.E., Berman, M.F. Sedative challenge reveals effects of head trauma. Proceedings of the 35th  Annual Meeting of the International Neuropsychological Society, 64, 2007.

74.  Marshall, R.S., Lennihan, L., Berman, M.F., Mohr, J. P., Lazar, R.M.  Midazolam challenge test as a guide to oral GABAergic treatment of patients with post-stroke dystonia.  Neurology, 68, Supplement 1, 2007.

75.  Festa, J.R., Shapiro, P.A., Mancini, D.M., Lantz, E.R., Deng, M.C., Naka,Y., Lazar, R.M.  Cognitive impairment in heart failure is not predicted by emotional factors. Journal of Coronary Artery Disease, 7, 192-193, 2007.

76.  Lazar, R.M., Festa, J.R., Berman, M.F., Speizer, A.E., Matejovsky, T., Marshall, R.S. ,GABA‑ but not Cholinergic‑Based Sedation Re‑induces Former Stroke Deficits, Neurology, 68, Supplement 1, A178, 2007.

77.  Chmayssani, M., Minzer, B., Saxena, M., Arogyuasami, R., Lazar, R., Greenstein, V.C., Marshall, R. Retinal microperimetry as a means to assess visual field expansion in visual restoration therapy. Neurology, 70, Supplement 1, A206, 2008.

78.  Antoniello, D., Minzer, B.M., Zarahn, E., Lazar, R.M., Marshall, R, Krakauer, J.  Proportional motor improvement: A new rule in stroke recovery? Neurology, 70, Supplement 1, A207, 2008

79.  Lantz, E.R., Festa, J.R., Meyers, P.M., Solomon, R.A. & Lazar, R.M. Acalculia without aphasia in patients with unbled, left-parietal AVM. The Clinical Neuropsychologist, 22(3), 414, 2008.

79.  Festa, J.R., Shapiro, P.A., Mancini, D.M., Lantz, E.R., Deng, M.C., Naka, Y., Lazar, R.M. Cognitive impairment in heart failure: it is more than just depression?  ASAIO, 2008, in press.

80.  Festa, J.R., Schwarz, L.R., Pliskin, N., Cullum, C.M., Lacritz, L., Romano, G.M., Charbel, F.T., Connolly, E.S., Marshall, R.S., Lazar, R.M. Clinical neuropsychological presentation in North American adults with Moya-Moya, International Journal of Stroke, 3, 113, 2008

81.  Chmayssani, M., Minzer, B.M., Handy, C.E., Lazar, R.M., Hirsch, J., Marshall, R.S.  Restoring vasomotor reactivity reverses atypical brain reorganization. International Journal of Stroke, 3, 332, 2008

82.  Lazar, R.M., R.M., Minzer, B.M., Antioniello, D., Festa, J.R., Krakauer, J.W., Marshall, R.S.  Proportional recovery from aphasia after first-time stroke suggests common recovery mechanism. International Journal of Stroke, 3, 331, 2008

83.  Lazar, R.M., Minzer, B., Antoniello, D.,  Festa, J.R., Krakauer, J.W., Marshall, R.S.   Improvement in Aphasia from First-Time Stroke Follows Proportional Recovery . Neurology, 72 (Suppl 3), pp A445-A446, 2009

84.  Festa, J., Schmidt, M., Shapiro, P.A., Mancini, D.M., Lantz, E.R., Naka, Y., Deng, M.C., Lazar, R.M.  The effect of ejection fraction and age on memory functioning in older adults with heart failure.  Neurology, 72 (Suppl 3), pp A435-A436, 2009

85.  Pavol, M.,  Goldberg, E., Mohr, J.P., Ruff, I.,  Lazar, R.M. Severe Aphasia Following Infarction in the Territory of the Left Anterior Choroidal Artery, Proceedings of the 35th  Annual Meeting of the International Neuropsychological Society, 68, 2011.

86.  Lazar, R.M., Festa, J.R., Marshall, R.S., Goldstein, D.J., Di Tullio, M., Parides, M., Gelijns, A., Naka, Y.Timing Behavior as a Clinical Index of Global Cerebral Ischemia in Patients on Ventricular Assist Support, Neurology, 76, Suppl 4, p. A237, 2011.

87.  Marshall, R.S., Festa, J.R., Cheung, Y.K., Chen, R., Derdeyn, C., Pavol, MK., Clarke, W.R., Videen, T., Grubb, R.L., Adams, H., Powers, W., Lazar, R.M., Cognitive impairment is associated with uni-hemispheral stage II hemodynamic failure.  Analysis of baseline data from the Randomized Evaluation of Carotid Occlusion and Neurocognition (RECON) trial.  Neurology, 76, Suppl 6, p. A309, 2011

88.  Lazar, R.M., Fonzetti, P., Edwards, D., Cheung, Y.K., Zondarak, D., Marshall, R.S., Early Safety and Efficacy of Theophylline to Promote Post-Stroke Recovery.  Cerebrovascular Disease, 33 (2), 2011.

89.  Marshall, R.S., Festa, J.R., Cheung, Y.K., Pavol, M., Chen, R., Derdeyn, C., Clarke, W.R., Videen, T., Grubb, R.L., Adams, H., Powers, W., Lazar, R.M.,  Cognitive Impairment is associated with  Poor Quality of Life in Carotid Occlusion: Baseline Analysis from the Randomized Evaluation of Carotid Occlusion and Neurocognition (RECON) Trial. Cerebrovascular Disease, 33 (2) 2011.

90.  Lazar, R.M., Lendaris, A.R., Dunn, L., Schweber, A.B., Marshall, R.M.  Does net gain during acute stroke recovery exceed daily variability?  Neurology, 2012, 78, Supplement 1.

91.  Minzer, B.M., Dampkowski, C.L., Schweber, A.B., Lazar, R.M., Marshall, R.S.  Fast Versus Slow Recoverers Following Acute Ischemic Stroke92.  Neurology, 2012, 78 Supplement 1.

92.  Pavol, M.A., Stein, J., Kabir, M.F., Yip, J., Sorkin, L.Y., Marshall, R.S., Lazar, R.M., Cognitive predictors of functional motor improvement. The Clinical Neuropsychologist, 2012, 26, 424-425.

93.  Pavol, M.A., Stein, J., Kabir, M.F., Yip, J., Sorkin, L.Y., Marshall, R.S., Lazar, R.M.  Qualitative versus quantitative measures of cognition as predictors of improvement in functional mobility. The Clinical Neuropsychologist, 2012, 26, 425.

94. Gutierrez, J., Lazar, R.M., Marshall, R.S.  Vascular Predictors Of Cognitive Impairment In Patients 172 With And Without Cardiovascular Disease: Results From Nhanes 1998-2001, Stroke, 2013

95.  Marshall, R.S., Festa, J.R., Cheung, K., Pavol, M.A., Derdeyn, C.P., Videen, T.O., Grubb, R.L., Slane, K., Powers, W.J., Lazar, R.M., Randomized Evaluation of Carotid Occlusion and Neurocognition (RECON): Main Results, Stroke, 2013

96.  Schweber, A.B., Dunn, L.E., Lendaris, A.R., Minzer, R.M., Lazar, R.M. Marshall, R.S. Recovery Rate vs Recovery Capacity: A Mathematical Model and its Implications for Rehabilitation, Stroke, 2013

97.  Lazar, R.M., Festa, J.R., Cheung, Y-C, Pavol, M.A., Derdeyn, C.P., Powers, W.J., Marshall, R.S. Unilateral hemodynamic failure in carotid occlusion affects global neurocognitive status more than focal, side-specific cognitive function, Cerebrovascular Disease, 2013, Suppl 3, p. 500.

98.  Festa, J.R., Pavol, M.A., Cheung, Y.K., Jia, X., Gubb, R.L., Powers, W.J., Lazar, R.M., Marshall, R.S.  Processing Speed is Associated with Poor Quality of Life in Carotid Occlusion: Analysis from the RECON trial.  Cerebrovascular Disease, 2013. Suppl 3, p. 508.

99. Marshall, R.S., Lazar, R.M., Pavol, M.A., Dharssi, S., Slane, K., Asllani, I.  Hemodynamic Effects In Carotid Occlusion Using Arterial Spin Labeling and Transcranial Doppler, Stroke, 2014, in press.

100.  Lazar, R.M., Dunn, L.E., Schweber, A., Manson, D., Lendaris, A., Marshall, R. S.; Inter-Individual Variability in Motor and Language Recovery during the Acute Stroke Period. Neurology, 2014, in press.



American Psychological Association, Division 25 (Experimental Analysis of Behavior) and Division 40 (Clinical Neuropsychology); National Co-Chair, Hospital Staff Membership Task Force, 1985; Practice Advisory Committee, 1995-2000; Science Advisory Committee, 1995-97

International Neuropsychological Society: Scientific Program Committee, 1998-Present,

Alzheimer's Disease and Related Disorders Association

National Head Injury Association

New York Academy of Sciences

New York State Psychological Association (Neuropsychology and Clinical Divisions)

American Academy of Neurology: Therapeutics and Technology Assessment Subcommittee for Melodic Intonation Therapy (2008-2009), Translational Neuroscience Subcommittee (2013-present)

American Stroke Association/American Heart Association: Membership/Communications Committee, 2004-2008

International Stroke Conference: Abstract Reviewer, 2005- Present: Emergency Cardiovascular Care Research Working Group (RWG), 2008 – present; National Co-Chair: Development of a neurological outcome tool for cardiac arrest, 2009-present

American Neurological Association

Honors & Awards

  • Psi Chi-Robert Formica Memorial Award, Department of Psychology, New York University
  • Sigma Xi
  • Andrew W. Mellow Fellowship
  • National Academy of Neuropsychology
  • Fellow, American Psychological Association, Division 40: Clinical Neuropsychology
  • Fellow, American Heart Association
  • Fellow, American Academy of Neurology
  • Fellow, American Neurological Association
  • Who’s Who in Medicine and Healthcare 2011-2012

NIH Grants


    Mar 15 2014 - Feb 28 2021


    Aug 1 2016 - May 31 2018


    Apr 1 2012 - Mar 31 2018


    Jul 9 2015 - Jun 30 2017


    Sep 30 2012 - Aug 31 2016


    Sep 1 2009 - Aug 31 2013


    Dec 6 2004 - Nov 30 2012


    Feb 1 2004 - Jan 31 2011