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    Beth Ellen Fisher, MS, PhD

    TitleProfessor of Clinical Physical Therapy
    SchoolHerman Ostrow School of Dentistry of USC
    DepartmentBiokinesiology and Physical Therapy
    AddressCHP 155
    Health Sciences Campus
    Los Angeles California 90089-9006
    Phone+1 323 442 2796
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      Beth Fisher is an Associate Professor of Clinical Physical Therapy in the Division of Biokinesiology and Physical Therapy at the University of Southern California. She holds a joint appointment in the Department of Neurology, Keck School of Medicine at USC. Dr. Fisher is the director of the Neuroplasticity and Imaging Laboratory primarily using Transcranial Magnetic Stimulation (TMS) to investigate brain-behavior relationships during motor skill learning and motor control in both non-disabled individuals and individuals with neurologic disorders. Additionally, Dr. Fisher is the director of the University of Southern California/Rancho Los Amigos National Rehabilitation Center (USC/RLANRC) Residency Program in Neurologic Physical Therapy. She previously worked at Rancho Los Amigos Medical Center on the Adult Neurology and Brain Injury Services and continues to consult and teach nationally and internationally on current concepts for the treatment of adults with neurological disorders. During her years as a clinician and rehabilitation specialist, it was her greatest ambition to be a part of developing physical therapy interventions that would maximize neural and behavioral recovery in individuals suffering from pathological conditions affecting the nervous system. Towards this goal she is currently studying the effects of high-intensity exercise on functional recovery and brain repair in Parkinson’s disease using TMS and Positron Emission Tomography (PET) as markers of neuroplasticity. Additionally, she is studying brain changes using TMS in individuals with stroke undergoing skilled rehabilitation; healthy individuals learning complex motor skills and individuals undergoing ankle manipulation as part of a physical therapy program for ankle


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      Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help.
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      1. Kuo YL, Dubuc T, Boufadel DF, Fisher B. Measuring Ipsilateral Silent Period: Effects of Muscle Contraction Levels and Quantification Methods. Brain Res. 2017 Aug 17. PMID: 28823955.
        View in: PubMed
      2. Smith JA, Albishi A, Babikian S, Asavasopon S, Fisher B, Kutch JJ. The motor cortical representation of a muscle is not homogeneous in brain connectivity. Exp Brain Res. 2017 Jun 19. PMID: 28631147.
        View in: PubMed
      3. Lee YY, Fisher B. Use of low frequency repetitive transcranial magnetic stimulation to reduce context-dependent learning in people with Parkinson's disease. Eur J Phys Rehabil Med. 2017 May 22. PMID: 28530089.
        View in: PubMed
      4. Fisher B, Piraino A, Lee YY, Smith JA, Johnson S, Davenport TE, Kulig K. The Effect of Velocity of Joint Mobilization on Corticospinal Excitability in Individuals With a History of Ankle Sprain. J Orthop Sports Phys Ther. 2016 Jul; 46(7):562-70. PMID: 27266885.
        View in: PubMed
      5. Winstein CJ, Stein J, Arena R, Bates B, Cherney LR, Cramer SC, Deruyter F, Eng JJ, Fisher B, Harvey RL, Lang CE, MacKay-Lyons M, Ottenbacher KJ, Pugh S, Reeves MJ, Richards LG, Stiers W, Zorowitz RD. Guidelines for Adult Stroke Rehabilitation and Recovery: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association. Stroke. 2016 Jun; 47(6):e98-e169. PMID: 27145936.
        View in: PubMed
      6. Fisher B, Southam AC, Kuo YL, Lee YY, Powers CM. Evidence of altered corticomotor excitability following targeted activation of gluteus maximus training in healthy individuals. Neuroreport. 2016 Apr 13; 27(6):415-21. PMID: 26981714.
        View in: PubMed
      7. Tretriluxana J, Kantak S, Tretriluxana S, Wu AD, Fisher B. Improvement in Paretic Arm Reach-to-Grasp following Low Frequency Repetitive Transcranial Magnetic Stimulation Depends on Object Size: A Pilot Study. Stroke Res Treat. 2015; 2015:498169. PMID: 26664827.
        View in: PubMed
      8. Rana M, Yani MS, Asavasopon S, Fisher B, Kutch JJ. Brain Connectivity Associated with Muscle Synergies in Humans. J Neurosci. 2015 Nov 04; 35(44):14708-16. PMID: 26538643; PMCID: PMC4635125.
      9. Lee YY, Winstein CJ, Gordon J, Petzinger GM, Zelinski EM, Fisher B. Context-Dependent Learning in People With Parkinson's Disease. J Mot Behav. 2016 May-Jun; 48(3):240-8. PMID: 26375786.
        View in: PubMed
      10. Ko NH, Laine CM, Fisher B, Valero-Cuevas FJ. Force Variability during Dexterous Manipulation in Individuals with Mild to Moderate Parkinson's Disease. Front Aging Neurosci. 2015; 7:151. PMID: 26321947; PMCID: PMC4530309.
      11. Lathan C, Myler A, Bagwell J, Powers CM, Fisher B. Pressure-controlled treadmill training in chronic stroke: a case study with AlterG. J Neurol Phys Ther. 2015 Apr; 39(2):127-33. PMID: 25742371.
        View in: PubMed
      12. Asavasopon S, Rana M, Kirages DJ, Yani MS, Fisher B, Hwang DH, Lohman EB, Berk LS, Kutch JJ. Cortical activation associated with muscle synergies of the human male pelvic floor. J Neurosci. 2014 Oct 08; 34(41):13811-8. PMID: 25297107; PMCID: PMC4188976.
      13. Fisher B, Morton SM, Lang CE. From motor learning to physical therapy and back again: the state of the art and science of motor learning rehabilitation research. J Neurol Phys Ther. 2014 Jul; 38(3):149-50. PMID: 24806437; PMCID: PMC4061220.
      14. Fisher B, Li Q, Nacca A, Salem GJ, Song J, Yip J, Hui JS, Jakowec MW, Petzinger GM. Treadmill exercise elevates striatal dopamine D2 receptor binding potential in patients with early Parkinson's disease. Neuroreport. 2013 Jul 10; 24(10):509-14. PMID: 23636255.
        View in: PubMed
      15. Petzinger GM, Fisher B, McEwen S, Beeler JA, Walsh JP, Jakowec MW. Exercise-enhanced neuroplasticity targeting motor and cognitive circuitry in Parkinson's disease. Lancet Neurol. 2013 Jul; 12(7):716-26. PMID: 23769598; PMCID: PMC3690528.
      16. Tabak R, Aquije G, Fisher B. Aerobic exercise to improve executive function in Parkinson disease: a case series. J Neurol Phys Ther. 2013 Jun; 37(2):58-64. PMID: 23632453.
        View in: PubMed
      17. Goh HT, Lee YY, Fisher B. Neural correlates of dual-task practice benefit on motor learning: a repetitive transcranial magnetic stimulation study. Eur J Neurosci. 2013 Jun; 37(11):1823-9. PMID: 23489946.
        View in: PubMed
      18. Fisher B, Lee YY, Pitsch EA, Moore B, Southam A, Faw TD, Powers CM. Method for assessing brain changes associated with gluteus maximus activation. J Orthop Sports Phys Ther. 2013 Apr; 43(4):214-21. PMID: 23485621.
        View in: PubMed
      19. Tretriluxana J, Kantak S, Tretriluxana S, Wu AD, Fisher B. Low frequency repetitive transcranial magnetic stimulation to the non-lesioned hemisphere improves paretic arm reach-to-grasp performance after chronic stroke. Disabil Rehabil Assist Technol. 2013 Mar; 8(2):121-4. PMID: 23244391.
        View in: PubMed
      20. Song J, Sigward S, Fisher B, Salem GJ. Altered Dynamic Postural Control during Step Turning in Persons with Early-Stage Parkinson's Disease. Parkinsons Dis. 2012; 2012:386962. PMID: 22518349; PMCID: PMC3306994.
      21. Fisher B. Intervention that challenges the nervous system confronts the challenge of real-world clinical practice. J Neurol Phys Ther. 2011 Sep; 35(3):148-9. PMID: 21934377.
        View in: PubMed
      22. Petzinger GM, Fisher B, Akopian G, Holschneider DP, Wood R, Walsh JP, Lund B, Meshul C, Vuckovic M, Jakowec MW. The role of exercise in facilitating basal ganglia function in Parkinson's disease. Neurodegener Dis Manag. 2011 Apr 01; 1(2):157-170. PMID: 23805167.
        View in: PubMed
      23. Kantak SS, Sullivan KJ, Fisher B, Knowlton BJ, Winstein CJ. Transfer of motor learning engages specific neural substrates during motor memory consolidation dependent on the practice structure. J Mot Behav. 2011; 43(6):499-507. PMID: 22150021.
        View in: PubMed
      24. Vuckovic MG, Li Q, Fisher B, Nacca A, Leahy RM, Walsh JP, Mukherjee J, Williams C, Jakowec MW, Petzinger GM. Exercise elevates dopamine D2 receptor in a mouse model of Parkinson's disease: in vivo imaging with [¹8F]fallypride. Mov Disord. 2010 Dec 15; 25(16):2777-84. PMID: 20960487; PMCID: PMC3273304.
      25. Sungkarat S, Fisher B, Kovindha A. Efficacy of an insole shoe wedge and augmented pressure sensor for gait training in individuals with stroke: a randomized controlled trial. Clin Rehabil. 2011 Apr; 25(4):360-9. PMID: 21148267.
        View in: PubMed
      26. Davenport TE, Kulig K, Fisher B. Ankle manual therapy for individuals with post-acute ankle sprains: description of a randomized, placebo-controlled clinical trial. BMC Complement Altern Med. 2010 Oct 19; 10:59. PMID: 20958995; PMCID: PMC2967502.
      27. Powers CM, Fisher B. Mechanisms underlying ACL injury-prevention training: the brain-behavior relationship. J Athl Train. 2010 Sep-Oct; 45(5):513-5. PMID: 20831400; PMCID: PMC2938326.
      28. Kantak SS, Sullivan KJ, Fisher B, Knowlton BJ, Winstein CJ. Neural substrates of motor memory consolidation depend on practice structure. Nat Neurosci. 2010 Aug; 13(8):923-5. PMID: 20622872.
        View in: PubMed
      29. Lin CH, Winstein CJ, Fisher B, Wu AD. Neural correlates of the contextual interference effect in motor learning: a transcranial magnetic stimulation investigation. J Mot Behav. 2010 Jul-Aug; 42(4):223-32. PMID: 20570818.
        View in: PubMed
      30. Petzinger GM, Fisher B, Van Leeuwen JE, Vukovic M, Akopian G, Meshul CK, Holschneider DP, Nacca A, Walsh JP, Jakowec MW. Enhancing neuroplasticity in the basal ganglia: the role of exercise in Parkinson's disease. Mov Disord. 2010; 25 Suppl 1:S141-5. PMID: 20187247; PMCID: PMC4111643.
      31. Fisher B, Davenport TE, Kulig K, Wu AD. Identification of potential neuromotor mechanisms of manual therapy in patients with musculoskeletal disablement: rationale and description of a clinical trial. BMC Neurol. 2009 May 21; 9:20. PMID: 19460169; PMCID: PMC2694757.
      32. Tretriluxana J, Gordon J, Fisher B, Winstein CJ. Hemisphere specific impairments in reach-to-grasp control after stroke: effects of object size. Neurorehabil Neural Repair. 2009 Sep; 23(7):679-91. PMID: 19411406.
        View in: PubMed
      33. Lin CH, Fisher B, Wu AD, Ko YA, Lee LY, Winstein CJ. Neural correlate of the contextual interference effect in motor learning: a kinematic analysis. J Mot Behav. 2009 May; 41(3):232-42. PMID: 19366656; PMCID: PMC2687810.
      34. Song J, Fisher B, Petzinger G, Wu A, Gordon J, Salem GJ. The relationships between the unified Parkinson's disease rating scale and lower extremity functional performance in persons with early-stage Parkinson's disease. Neurorehabil Neural Repair. 2009 Sep; 23(7):657-61. PMID: 19336530.
        View in: PubMed
      35. Lin CH, Fisher B, Winstein CJ, Wu AD, Gordon J. Contextual interference effect: elaborative processing or forgetting-reconstruction? A post hoc analysis of transcranial magnetic stimulation-induced effects on motor learning. J Mot Behav. 2008 Nov; 40(6):578-86. PMID: 18980910.
        View in: PubMed
      36. Fisher B, Wu AD, Salem GJ, Song J, Lin CH, Yip J, Cen S, Gordon J, Jakowec M, Petzinger G. The effect of exercise training in improving motor performance and corticomotor excitability in people with early Parkinson's disease. Arch Phys Med Rehabil. 2008 Jul; 89(7):1221-9. PMID: 18534554; PMCID: PMC2989816.
      37. Wu AD, Petzinger GM, Lin CH, Kung M, Fisher B. Asymmetric corticomotor excitability correlations in early Parkinson's disease. Mov Disord. 2007 Aug 15; 22(11):1587-93. PMID: 17523196.
        View in: PubMed
      38. Petzinger GM, Walsh JP, Akopian G, Hogg E, Abernathy A, Arevalo P, Turnquist P, Vuckovic M, Fisher B, Togasaki DM, Jakowec MW. Effects of treadmill exercise on dopaminergic transmission in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-lesioned mouse model of basal ganglia injury. J Neurosci. 2007 May 16; 27(20):5291-300. PMID: 17507552.
        View in: PubMed
      39. Fisher B, Boyd L, Winstein CJ. Contralateral cerebellar damage impairs imperative planning but not updating of aimed arm movements in humans. Exp Brain Res. 2006 Oct; 174(3):453-66. PMID: 16741716.
        View in: PubMed
      40. Petzinger GM, Fisher B, Hogg E, Abernathy A, Arevalo P, Nixon K, Jakowec MW. Behavioral motor recovery in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-lesioned squirrel monkey (Saimiri sciureus): changes in striatal dopamine and expression of tyrosine hydroxylase and dopamine transporter proteins. J Neurosci Res. 2006 Feb 01; 83(2):332-47. PMID: 16385585.
        View in: PubMed
      41. Fisher B, Petzinger GM, Nixon K, Hogg E, Bremmer S, Meshul CK, Jakowec MW. Exercise-induced behavioral recovery and neuroplasticity in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-lesioned mouse basal ganglia. J Neurosci Res. 2004 Aug 01; 77(3):378-90. PMID: 15248294.
        View in: PubMed