Candidate of Biological Sciences, Associate professor
Candidate of Biological Sciences, Associate professor/Chair of Speech Therapy and Rehabilitation Therapy
1986-1993. Yerevan State Medical University Faculty of General Medicine
2010 PhD in Physiology. «Effects of bacterial melanin on recovery processes after central nervous system injury and in models of neurodegeneration»
2017-2018 Acting Head of the Chair of Speech Therapy and Rehabilitation
2014 - present Chair of Speech Therapy and Rehabilitation Associate professor
2013-2014 West Virginia University. Department of Exercise Physiology.
2011-present Yerevan State Medical University Department of Sports medicine and rehabilitation. Associate professor
2005 Armenian State Institute of Physical Education. Department of Kinesiology Associate professor
1996 Yerevan State Medical University Department of Physiology Assistant professor
Neurologic Basis of Speech Pathology
Ergotherapy for Orthopedic Conditions
Ergotherapy for Neurological disorders
Neurotic disturbances in chilfren
Recovery of movements and motor conditioned reflexes after central nervous system lesions and in conditions of neurodegeneration.
Additional training and qualifications
2014. Sports medicine course organized by "Athletes in Action" Yerevan, Armenia
2011 Internship in Rehabilitation Medicine. Paracelsus Medical University. Department of Physical medicine and Rehabilitation. Salzburg, Austria
2010. Seminars in Rehabilitation Medicine. Austrian-American Medical Association. Salzburg, Austria
1994-1995 Clinical residency in Internal medicine.
Yerevan Clinic #3
2012 - present «European Association of Rehabilitation Medicine»
Executive editor International journal of health and rehabilitation sciences
Editorial board member American journal of life sciences Open access journal of science and technology
International journal of neurology research International journal of Nutrition and food Sciences
 Petrosyan T.R. Effects of bacterial melanin on the recovery of locomotion in rats after CNS lesions. Research, Medicine, Education. Yerevan Armenia 2011, Nov., 53-57.
 Tigran R. Petrosyan, Olga V. Gevorkyan, Irina B. Meliksetyan, Anna S. Hovsepyan, Levon R. Manvelyan. Neuroprotective Action of bacterial melanin in rats after corticospinal tract lesions. Pathophysiology, Elsevier, 2012, V 19, 71-82.
 Tigran R. Petrosyan, Olga V. Gevorkyan, Irina B. Meliksetyan, Anna S. Hovsepyan, Levon R. Manvelyan.
Effect of Bacterial Melanin on Recovery of Conditioned Reflexes and Movements in Rats after Destruction of Substantia Nigra. J. Asymmetry. Moscow, 2012, No. 6, 41-52.
 O.V. Gevorgyan, I. B. Meliksetyan, T. R. Petrosyan, L. R. Manvelyan. Effects of bacterial melanin on recovery processes after peripheral nerve damage. Proceedings of the international conference. Physiological mechanisms of functional regulation. Yerevan 2012, 127-131.
 T.R. Petrosyan. Reparative regeneration of peripheral nerve in rats after bacterial melanin application. 2013 Proceedings of international conference "Problems and developmental tendencies of medical science in Ukraine" Ukraine, Dnepropetrovsk. pp. 15-20
 T.R. Petrosyan, O.V. Gevorkyan. Initial training enhances neuronal plasticity and motor recovery after CNS lesions in rats 2013 Proceedings of international conference "Theoretical and practical aspects of medical science" Ukraine, Lviv. pp 89-94
 Petrosyan T.R. Effects of resistance training on cognitive functions in elderly. New Armenian Medical Journal. 2013, Vo l . 7 ( 2 0 1 3) , N о 3, p . 78-84
 T.R. Petrosyan. Study of bacterial melanin effects on electrical activity of sensorimotor cortex neurons in rats. 2013 Proceedings of international conference "Priorities of medical science" Ukraine, Odessa, pp. 97-103
 Petrosyan T.R, Chavushyan V.A. Hovsepyan A.S. Bacterial melanin increases electrical activity of neurons in Substantia Nigra pars compacta. Journal of Neural Transmission.
Springer. 2014, 121: 259-265
 Мкртчян А.Г. Петросян Т.Р. Особенности нарушения речи при болезни Паркинсона и основные методы борьбы с дизартрией у таких больных. Медицина, Наука и Образование. 2014 No. 17. 35-28
 Petrosyan T.R., Gevorkyan O.V., Chavushyan V.A., Meliksetyan I.B.., Hovsepyan A.S, Manvelyan L.R. Effects of bacterial melanin on motor recovery and regeneration after unilateral destruction of substantia nigra pars compacta in rats. Neuropeptides. Elsevier. 2014, V. 48, P. 37-46..
 T. R. Petrosyan, O. V. Gevorkyan, A. S. Hovsepyan. Effects of Bacterial Melanin on Movement, Posture, and Skilled Balancing Deficits After Unilateral Destruction of Substantia Nigra Pars Compacta in Rats. Journal of Motor Behavior, Vol. 46, No. 1, 2014,
 T. R. Petrosyan, A.S. Hovsepyan. Bacterial melanin crosses the blood–brain barrier
in rat experimental model. Fluids and barriers of the CNS. 2014, 11:20, 1-7
 T. R. Petrosyan. Initial training facilitates posttraumatic motor recovery in rats after pyramidal tract lesion and in conditions of induced regeneration. Somatosensory and motor research 2014, 31: 1-4
 T. R. Petrosyan, A.S. Hovsepyan. Bacterial Melanin Improves Cognitive Impairment Induced by Cerebral Hypoperfusion in Rats. Journal of Motor Behavior, 2014, Vol. 46, No. 6: 469-475,
 T. R. Petrosyan, A.S. Hovsepyan. Bacterial melanin ameliorates symptoms of experimental autoimmune encephalomyelitis in rats. Advances in Neuroimmune biology. 5 (2014) 181–188
 Olga. V. Gevorkyan, Irina B. Meliksetyan, Tigran R. Petrosyan, Anichka S. Hovsepyan. Bacterial melanin promotes recovery after sciatic nerve injury in rats. Neural Regeneration Research 02/2015; 10(1):124-127
 Tigran Petrosyan. Bacterial melanin in rat models of Parkinson’s disease: a potential neuroprotective strategy. Neural Regeneration Research 03/2015; 10(2)
 Tigran Petrosyan. Bacterial melanin as a potential targeted therapy for the Parkinson's Disease. Journal of Pigmentary Disorders. 2015, 2:4, 173-174
 Т.Р. Петросян, В.А. Чавушян, А.С. Тер-Маркосян, А.С. Овсепян Эффекты разных концентраций бактериального меланина на электрическую активность нейронов коры мозга при раздражении нервов задней конечности у крыс. Биомедицина. 2015, 3:52-62
 T.R. Petrosyan, O.V. Gevorgyan, A.S. Hovsepyan, A.S. Ter-Markosyan. Comparison of evoked spiking activity of rat sensorimotor cortex neurons after intraperitoneal and direct application of bacterial melanin. Neurophysiology. Springer. V6. 2015.
Fulbright Visiting Scholar - 2013
Armenian National Science and Education Fund - research group member (2010 and 2016)