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Pablo Ariel Celnik, MD

Director, Human Brain Physiology and Stimulation Laboratory
Associate Professor of Physical Medicine and Rehabilitation
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The Johns Hopkins Hospital

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  • Director, Human Brain Physiology and Stimulation Laboratory
  • Medical Director, Outpatient Neurorehabilitation Program
  • Associate Professor of Physical Medicine and Rehabilitation
  • Associate Professor of Neurology

Centers & Institutes

  • Human Brain Physiology and Stimulation Laboratory


Neurologic Rehabilitation, Physical Medicine and Rehabilitation, Stroke, Traumatic Brain Injury

Research Interests

Interventions to enhance motor recovery after stroke. Neurophysiology and modulation of human motor learning.


Dr. Celnik is a board certified Physical Medicine and Rehabilitation (PM&R) physician. Originally, he completed residency training in Neurology in Argentina, followed by a fellowship in Neurological Rehabilitation at the University of Maryland and later a research fellowship in the lab of Dr. Mark Hallett at the NINDS, NIH. After this, he entered the PM&R residency program in Johns Hopkins where he was ultimately appointed chief resident. Subsequently, he was awarded a K12 Award under the mentorship of Dr. L.G. Cohen at the NIH. At the same time, he joined as an assistant professor in the PM&R and Neurology Departments at Johns Hopkins School of Medicine.

Dr Celnik research has focused on understanding the mechanisms underlying motor learning and motor recovery after brain lesions, and on developing new strategies to enhance motor recovery after stroke. In this area, he has published several manuscripts in highly regarded journals and books.

Dr. Celnik is also the Medical Director of the Outpatient Neurorehabilitation Program of Johns Hopkins Medicine, where care is provided in a comprehensive manner to patients with rehabilitation needs due to neurological conditions.


  • English
  • Spanish


Member, Association of Academic Physiatrists

Fellow of the American Academy of Physical Medicine and Rehabilitation

Member, Society for Neuroscience

Member, Neural Control of Movement Society

Additional Resources

Additional Resources +
  • Education +


    • Universidad de Buenos Aires (Buenos Aires ) (1990)


    • Johns Hopkins University School of Medicine / Physical Medicine and Rehabilitation (Baltimore MD) (2003)
    • Hospital Frances / Neurology (Buenos Aires ) (1994)


    • Kernan Hospital (Baltimore MD) (1996)
    • NIH - HCPS - NINDS / Volunteer (Bethesda MD) (1996)


    • American Board of Physical Medicine and Rehab / Physical Medicine & Rehabilitation (2014)
  • Research & Publications +

    Selected Publications

    Selected publications:

    1: Dissociating the Roles of the Cerebellum and Motor Cortex during Adaptive Learning: The Motor Cortex Retains What the Cerebellum Learns. Galea JM, Vazquez A, Pasricha N, Orban de Xivry JJ, Celnik P. Cereb Cortex. 2010 Dec 9. [Epub ahead of print]

    2: Reconnecting the dots after stroke. Celnik P, Hillis AE. Ann Neurol. 2009 Nov;66(5):570-1.

    3: Modulation of cerebellar excitability by polarity-specific noninvasive direct current stimulation. Galea JM, Jayaram G, Ajagbe L, Celnik P. J Neurosci. 2009 Jul 15;29(28):9115-22.

    4: Brain polarization enhances the formation and retention of motor memories. Galea JM, Celnik P. J Neurophysiol. 2009 Jul;102(1):294-301. Epub 2009 Apr 22.

    5: Effects of combined peripheral nerve stimulation and brain polarization on performance of a motor sequence task after chronic stroke. Celnik P, Paik NJ, Vandermeeren Y, Dimyan M, Cohen LG. Stroke. 2009 May;40(5):1764-71. Epub 2009 Mar 12.

    6: Facilitating skilled right hand motor function in older subjects by anodal polarization over the left primary motor cortex. Hummel FC, Heise K, Celnik P, Floel A, Gerloff C, Cohen LG. Neurobiol Aging. 2009 Feb 5. [Epub ahead of print]

    7: Return of memory and sleep efficiency following moderate to severe closed head injury. Makley MJ, Johnson-Greene L, Tarwater PM, Kreuz AJ, Spiro J, Rao V, Celnik PA. Neurorehabil Neural Repair. 2009 May;23(4):320-6. Epub 2009 Jan 26.

    8: Noninvasive cortical stimulation enhances motor skill acquisition over multiple days through an effect on consolidation. Reis J, Schambra HM, Cohen LG, Buch ER, Fritsch B, Zarahn E, Celnik PA*, Krakauer JW. Proc Natl Acad Sci U S A. 2009 Feb 3;106(5):1590-5. Epub 2009 Jan 21. Note that Celnik shared the senior author role.

    9: Consensus: "Can tDCS and TMS enhance motor learning and memory formation?" Reis J, Robertson E, Krakauer JW, Rothwell J, Marshall L, Gerloff C, Wassermann E, Pascual-Leone A, Hummel F, Celnik PA, Classen J, Floel A, Ziemann U, Paulus W, Siebner HR, Born J, Cohen LG. Brain Stimulat. 2008 Oct;1(4):363-369.

    10: Prevalence of sleep disturbance in closed head injury patients in a rehabilitation unit. Makley MJ, English JB, Drubach DA, Kreuz AJ, Celnik PA, Tarwater PM. Neurorehabil Neural Repair. 2008 Jul-Aug;22(4):341-7.

    11: Effects of action observation on physical training after stroke. Celnik P, Webster B, Glasser DM, Cohen LG. Stroke. 2008 Jun;39(6):1814-20. Epub 2008 Apr 10.

    12: Concurrent action observation modulates practice-induced motor memory formation. Stefan K, Classen J, Celnik P, Cohen LG. Eur J Neurosci. 2008 Feb;27(3):730-8.

    13: Somatosensory stimulation enhances the effects of training functional hand tasks in patients with chronic stroke. Celnik P, Hummel F, Harris-Love M, Wolk R, Cohen LG. Arch Phys Med Rehabil. 2007 Nov;88(11):1369-76.

    14: Intermanual Differences in movement-related interhemispheric inhibition. Duque J, Murase N, Celnik P, Hummel F, Harris-Love M, Mazzocchio R, Olivier E, Cohen LG.J Cogn Neurosci. 2007 Feb;19(2):204-13.

    15: Effects of brain polarization on reaction times and pinch force in chronic stroke. Hummel FC, Voller B, Celnik P, Floel A, Giraux P, Gerloff C, Cohen LG. BMC Neurosci. 2006 Nov 3;7:73.

    16: Noninvasive brain stimulation in stroke rehabilitation. Webster BR, Celnik PA, Cohen LG. NeuroRx. 2006 Oct;3(4):474-81. Review.

    17: Formation of a motor memory by action observation. Stefan K, Cohen LG, Duque J, Mazzocchio R, Celnik P, Sawaki L, Ungerleider L, Classen J. J Neurosci. 2005 Oct 12;25(41):9339-46.

    18: Encoding a motor memory in the older adult by action observation. Celnik P, Stefan K, Hummel F, Duque J, Classen J, Cohen LG. Neuroimage. 2006 Jan 15;29(2):677-84. Epub 2005 Aug 24.

    19: Transcallosal inhibition in chronic subcortical stroke. Duque J, Hummel F, Celnik P, Murase N, Mazzocchio R, Cohen LG. Neuroimage. 2005 Dec;28(4):940-6. Epub 2005 Aug 9.

    20: Dopaminergic influences on formation of a motor memory. Flel A, Breitenstein C, Hummel F, Celnik P, Gingert C, Sawaki L, Knecht S, Cohen LG. Ann Neurol. 2005 Jul;58(1):121-30.

    21: Effects of non-invasive cortical stimulation on skilled motor function in chronic stroke. Hummel F, Celnik P, Giraux P, Floel A, Wu WH, Gerloff C, Cohen LG. Brain. 2005 Mar;128(Pt 3):490-9. Epub 2005 Jan 5.

    22: Modulation of motor function and cortical plasticity in health and disease. Celnik PA, Cohen LG. Restor Neurol Neurosci. 2004;22(3-5):261-8. Review.

    23: Motor cortex excitability in patients with cerebellar degeneration. Liepert J, Hallett M, Samii A, Oddo D, Celnik P, Cohen LG, Wassermann EM. Clin Neurophysiol. 2000 Jul;111(7):1157-64.

    24: Cutaneomotor integration in humans is somatotopically organized at various levels of the nervous system and is task dependent. Classen J, Steinfelder B, Liepert J, Stefan K, Celnik P, Cohen LG, Hess A, Kunesch E, Chen R, Benecke R, Hallett M. Exp Brain Res. 2000 Jan;130(1):48-59.

    25: Period of susceptibility for cross-modal plasticity in the blind. Cohen LG, Weeks RA, Sadato N, Celnik P, Ishii K, Hallett M. Ann Neurol. 1999 Apr;45(4):451-60.

    26: Functional relevance of cross-modal plasticity in blind humans. Cohen LG, Celnik P, Pascual-Leone A, Corwell B, Falz L, Dambrosia J, Honda M, Sadato N, Gerloff C, Catal MD, Hallett M. Nature. 1997 Sep 11;389(6647):180-3.

    27: Depression of motor cortex excitability by low-frequency transcranial magnetic stimulation. Chen R, Classen J, Gerloff C, Celnik P, Wassermann EM, Hallett M, Cohen LG. Neurology. 1997 May;48(5):1398-403.

    28: Syncope and seizure-like activity secondary to acute herpes zoster infection of the trigeminal nerve. Bonamico L, Celnik P. Cephalalgia. 1995 Jun;15(3):241-2.
  • Academic Affiliations & Courses +
  • Activities & Honors +


    ASNR Outstanding Neurorehabilitation Clinician Scientist Award (2010)

    Presidential Early Career Award for Scientists and Engineers (PECASE) (2009), the highest honor bestowed by the U.S. government on outstanding scientists and engineers beginning their independent careers.

    Young Academician Award, Association of Academic Physiatrists, 2007.

    Selected for Program for Academic Leadership sponsored by the Association of Academic Physiatrists

    Best Paper Presentation Award, American Society of Neurorehabilitation, ASNR 13th Annual Meeting
2006 ACRM-ASNR Joint Conference

    2006 Womens Board Of The Johns Hopkins Hospital Grant

    Dennis W. Jahnigen Career Development Scholars Awards, American Geriatric Society, 2006

    Clinician Scientist Award, Johns Hopkins University, 2006

    Best Paper Presentation Award, Association of Academic Physiatrists Annual Meeting 2005

    2003 ERF New Investigator Award, Foundation for Physical Medicine and Rehabilitation

    Selected for 2003 Rehabilitation Medicine Scientist Training Program (RMSTP), Association of Academic Physiatrists

    1997 Fellows Award for Research Excellence, National Institute of Health.

    Professional Activities

    Dr Celnik has received numerous prestigious awards such as the Clinician Scientist Award from Johns Hopkins University, the 2006 Dennis W. Jahnigen Career Development Scholars Award from the American Geriatric Society, and the Young Academician Award from the Association of Academic Physiatrist for outstanding academic performance, During his training he also received the 1997 Fellows Award for Research Excellence by the National Institute of Health, the 2003 ERF New Investigator Award by the Foundation for Physical Medicine and Rehabilitation, the 2005 Best Paper Presentation Award by the Association of Academic Physiatrists, and the 2006 Best Paper Presentation Award by the American Society of Neurorehabilitation and American Congress of Rehabilitation Medicine.

    Dr Celnik has organized numerous seminars and has been invited to lecture in different universities, and national and international meetings such as the Association of Academic Physiatrists, International Society of Physical Rehabilitation Medicine, Neural Control of Movement, Pan-American Congress of Neurorehabilitation, Society of Neuroscience Argentina, and Meeting of the European Societies of Neuropsychology.
  • Videos & Media +
  • Events +
  • Contact & Locations +


    The Johns Hopkins Hospital
    600 N. Wolfe Street
    Meyer Room 1-163
    Baltimore, MD 21287
    Phone: 443-923-2721
    Appointment Phone: 410-614-4030
    Fax: 443-923-2715
    Location Map
    Johns Hopkins Bayview Medical Center
    4940 Eastern Avenue
    AA Room 1654
    Baltimore, MD 21224
    Phone: 410-550-5299
    Appointment Phone: 410-502-2272
    Fax: 410-550-1345
    Location Map


    • Physical Medicine and Rehabilitation

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