Hyeo-Il Ma, M.D., Ph. D. 

마효일 

Hallym Sacred Heart Hospital 

Neurology 

Department of Neurology, Hallym University College of Medicine, Sacred Heart Hospital 896 Pyungchon, Anyang City, 431-070, Korea 

+82-31-380-3742 

+82-31-381-4659 

hima@hallym.ac.kr 

1991                 M.D. B.S. Seoul National University College of Medicine, Seoul, Korea
1995                 M.S. Neurology, Ulsan University, Postgraduate School, Korea
2003                 Ph.D. Neurology, Ulsan University, Postgraduate School, Korea 

1996-1998        Fellowship in Dept. of Neurology, Asan Medical Center, Seoul, Korea
1998-1998        Fellowship in Dept. of Neurology, Kangnam Sacred Heart Hospital, Seoul, Korea
1999-2002        Instructor, Dept. of Neurology, Sacred Heart Hospital, Hallym University College of Medicine, Korea
2002-2004        Assistant Professor, Dept. of Neurology, Sacred Heart Hospital,
                       Hallym University College of Medicine, Korea
2004-present    Associate Professor, Dept. of Neurology, Sacred Heart Hospital,
                       Hallym University College of Medicine, Korea 

Member of Korean Neurological Association
Member of Korean Movement Disorders Society
Member of Korean Society of Geriatric Neurology
Member of Korean Society of Clinical Neurophysiology 

1. Movement disorders & Electrophysiology
Clinical neurophysiology, especially movement electrophysiology and evoked potentials using various electrophysiologic methods are main interest in our research fields. Clinical neurophysiology is an area of medical practice focused primarily on measuring function in the central and peripheral nervous system including the autonomic nervous system. We focused on central evoked potentials such as Bereitschaftpotential, N30, Negative contingent potentials, and cortical excitability in patients with parkinson’s disease or other movement disorders for measuring function and evaluation of pathophysiology. Other interests are on the use of repetitive transcranial magnetic stimulation. We plan to evaluate the effect of chronic application of repetitive magnetic stimulation in patient with depression and Parkinsonian symptoms. Currently, I am interested in the pathogenesis of Rapid Eye Movement (REM) sleep behavior disorders, especially abnormal movements. The incidence of abnormal movements such as RBD and parasomnia, movements without atonia during REM sleep in Parkinson’s disease are very high. My major concern is the pathogenesis and semiology of RBD, sleep problems in patients with parkinsonian symptom. 

1. Familial Carpal Tunnel Syndrome: A Case Report. Ma HI, Lee SA, Kim KK, Lee MC, Yoon JO.  Journal of Ulsan medical school 1993;2(1): 102-105.
2. Spontaneous Spinal Subarachnoid Hemorrhage Report of a Case. Ma HI, Hwang YM, Lee MC. J Kor Neurol Assoc 1994;12:134-138.
3. Motor Evoked Potentials as a Prognostic Indicator in Stroke Patients with Motor Deficit. Ma HI, Lee SA, Kim Jong S, Kim KK, Lee MC. J Kor Neurol Assoc 1995;13:510-518
4. Semiology and its Lateralizing Signs in Mesial Temporal Lobe Epilepsy. Ma HI, Kang JK, Lee SA, Hwang YM. J Kor Neurol Assoc 1996;14(1):134-141.
5. Blink Reflex in Idiopathic Parkinson's Disease: Reduction of Habituation in Paired Stimulation. Choi IS, Lee SA, Ma HI, Im JH, Lee MC. J Kor Neurol Assoc 1997;15(4):775-782
6. Analysis of 1129 consecutive patients with acute stroke: The Hallym stroke registry. Lee BC, Jeong SC, Hwang SH, Kim HC, Bae JC, Ma HI, Yu KH, Lee IH. Korean Journal of Stroke 1999;1(1):21-27.
7. Incomplete AICA Syndrome Presented with Peripheral Facial Palsy; A Variant of Gasperini Syndrome. Kim DH, Lee BC, Ma HI, Yu KH, Choi HC, Son JH. Journal of The Korean Geriatrics Society 1999;3(2):91-95.
8. Topiramate in medically intractable partial epilepsies: Double-blind placebo-controlled randomized parallel group trial. Korean Topiramate Study Group. Epilepsia 1999;40(12):1767-74,.
9. Depressive and anxiety symptoms in the acute stage of stroke. Kim SJ, Kim YS, Yoo SW, Lee MH, Yu KH, Ma HI, Lee BC. Korean Journal of Stroke 2000;2(1):28-34.
10. Combined bilateral depth and subdural electrode investigation in temporal lobe epilepsy. MA HI, Kang JK, Kwak KH, Lee JK, Lee SA. J Korean Neurol Assoc 2000;18(5):589-594.
11. The compliance of stroke patients for secondary prevention in newly developed city, Pyungchon. Lee BR, Yu KH, Ma HI, Jung S, Jung SC, Lee BC. Korean Journal of Stroke 2000;2(2):158-163.
12. Localized ictal pain as a sole manifestation of post-stroke seizure. Ma HI, Yu KH, Lee BR, Lee BC. J Korean Neurol Assoc 2001;19(1):49-51.
13. A case of tonic spasm presenting as sole manifestation of multiple sclerosis. Lee BR, Na HR, Jeong S, Yu KH, Ma HI, Lee BC. J Korean Neurol Assoc 2001;19(1):49-51.
14. Intraoperative electrophysiological monitoring during microvascular decompression for hemifacial spasm and surgical outcome. Kim SK, Ma HI, Kwon Y, Lee SA. J Korean Neurol Assoc 2001;19(3):260-265.
15. Cavernous angioma coexisting with venous angioma in the posterior fossa. Bae JS, Ma HI, Yu KH, Han SJ, Kang WY, Lee BC. J Korean Neurol Assoc 2001;19(6): 645-647.
16. Clopidogrel induced reversible ageusia. Nam KS, Sung YH, Bae JS, Jeong SC, Yu KH, Ma HI, Lee BC. Korean Journal of Stoke 2002;4(1):58-60.
17. Two cases of carbamazepine induced bradyarrhythmia: potentially lethal side effect in elderly patients. Sohn JH, Ma HI, Kim DH, Yu KH, Jeong SC, Lee BC. J Korean Neurol Assoc 2002;20(4):407-409.
18. Circadian variations in the onset time of ischemic stroke. Jeong SC, Yu KH, Ma HI, Lee BC. Korean Journal of Stoke 2002;4(2): 65-71.
19. The electrophysiological features in a patient with acute organophosphate intoxication. Young-wook Kwon, Il-Soo Choi, Hyeo-Il Ma, Kyeong-Sick Nam, Hyun-Jung Park, Hong-Ki Song, Byung-Chul Lee. J Korean Neurol Assoc 2003;21(4):436-439.
20. Diabetes mellitus and drug-induced parkinsonism: A case–control study.
Hyeo-Il Ma, Jin-Hyuck Kim, Min-Kyung Chu, Mi-Sun Oh, Kyung-Ho Yu, Jooyong Kim, Woong Hahm, Yun Joong Kim, Byung-Chul Lee.
Journal of the Neurological Sciences 2009;284:140-143.
21. Generalized chorea with acute bilateral basal ganglia lesions in Diabetic uremic patients. Sun Young Koo, Sujin Lee, Mi-Sun Oh, Joo-Yong Kim, Hyeo-Il Ma, Sung Gyun Kim, Yun Joong Kim. J Korean Neurol Assoc 2009;27(3): 276-278.
22. Midbrain atrophy in subcortical ischemic vascular dementia.
Young-Hee Sung, Ki-Hyung Park, Yeung-Bae Lee, Hyeon-Mi Park, Dong Jin Shin, Jea-Sul Park, Mi-Sun Oh, Hyeo-Il Ma, Kyung-Ho Yu, Suk-Yun Kang, Yun Joong Kim, Byung-Chul Lee. J Neurol 2009