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Beth Ellen Fisher, MS, PhD

Title(s)Professor Of Clinical
AddressCHP 155
Health Sciences Campus
Los Angeles CA 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. to make corrections and additions.
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    1. Potential Indirect Mechanisms of Cognitive Enhancement After Long-Term Resistance Training in Older Adults. Phys Ther. 2020 Jun 23; 100(6):907-916. Macaulay TR, Fisher BE, Schroeder ET. PMID: 31944253.
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    2. Effects of high-frequency repetitive transcranial magnetic stimulation on reach-to-grasp performance in individuals with Parkinson's disease: a preliminary study. Exp Brain Res. 2020 Jun 04. Thanakamchokchai J, Tretriluxana J, Pakaprot N, Pisarnpong A, Fisher BE. PMID: 32500298.
      View in: PubMed   Mentions:    Fields:    
    3. Beyond Limits: Unmasking Potential Through Movement Discovery. Phys Ther. 2020 Apr 27. Fisher BE. PMID: 32339243.
      View in: PubMed   Mentions:    Fields:    
    4. Expectancy and affective response to challenging balance practice conditions in individuals with Parkinson's disease. Eur J Neurosci. 2020 Mar 16. Chung YC, Lewthwaite R, Winstein CJ, Monterosso JR, Fisher BE. PMID: 32176392.
      View in: PubMed   Mentions:    Fields:    
    5. Corticomotor Excitability of Gluteus Maximus Is Associated with Hip Biomechanics During a Single-Leg Drop-Jump. J Mot Behav. 2020 Feb 24; 1-7. Shih Y, Fisher BE, Smith JA, Powers CM. PMID: 32090700.
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    6. Context-Dependent Behavior in Parkinson's Disease With Freezing of Gait. Neurorehabil Neural Repair. 2019 12; 33(12):1040-1049. Lee YY, Tai CH, Fisher BE. PMID: 31690228.
      View in: PubMed   Mentions:    Fields:    
    7. Relationship between Interhemispheric Inhibition and Dexterous Hand Performance in Musicians and Non-musicians. Sci Rep. 2019 08 09; 9(1):11574. Kuo YL, Kutch JJ, Fisher BE. PMID: 31399612.
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    8. Eight Weeks of Aerobic Interval Training Improves Psychomotor Function in Patients with Parkinson's Disease-Randomized Controlled Trial. Int J Environ Res Public Health. 2019 03 11; 16(5). Marusiak J, Fisher BE, Jaskólska A, Slotwinski K, Budrewicz S, Koszewicz M, Kisiel-Sajewicz K, Kaminski B, Jaskólski A. PMID: 30861998.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    9. Anticipatory postural adjustments and spatial organization of motor cortex: evidence of adaptive compensations in healthy older adults. J Neurophysiol. 2018 12 01; 120(6):2796-2805. Smith JA, Fisher BE. PMID: 30281380.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    10. In Standing, Corticospinal Excitability Is Proportional to COP Velocity Whereas M1 Excitability Is Participant-Specific. Front Hum Neurosci. 2018; 12:303. Nandi T, Lamoth CJC, van Keeken HG, Bakker LBM, Kok I, Salem GJ, Fisher BE, Hortobágyi T. PMID: 30104968.
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    11. Distributed representation of pelvic floor muscles in human motor cortex. Sci Rep. 2018 05 08; 8(1):7213. Yani MS, Wondolowski JH, Eckel SP, Kulig K, Fisher BE, Gordon JE, Kutch JJ. PMID: 29740105.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    12. A comparison of seven different DTI-derived estimates of corticospinal tract structural characteristics in chronic stroke survivors. J Neurosci Methods. 2018 07 01; 304:66-75. Kim B, Fisher BE, Schweighofer N, Leahy RM, Haldar JP, Choi S, Kay DB, Gordon J, Winstein CJ. PMID: 29684462.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    13. The Effect of Practice Schedule on Context-Dependent Learning. J Mot Behav. 2019; 51(2):121-128. Lee YY, Fisher BE. PMID: 29498594.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    14. Increasing mediolateral standing sway is associated with increasing corticospinal excitability, and decreasing M1 inhibition and facilitation. Gait Posture. 2018 02; 60:135-140. Nandi T, Fisher BE, Hortobágyi T, Salem GJ. PMID: 29202358.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    15. Measuring ipsilateral silent period: Effects of muscle contraction levels and quantification methods. Brain Res. 2017 Nov 01; 1674:77-83. Kuo YL, Dubuc T, Boufadel DF, Fisher BE. PMID: 28823955.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    16. The motor cortical representation of a muscle is not homogeneous in brain connectivity. Exp Brain Res. 2017 09; 235(9):2767-2776. Smith JA, Albishi A, Babikian S, Asavasopon S, Fisher BE, Kutch JJ. PMID: 28631147.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    17. Use of low-frequency repetitive transcranial magnetic stimulation to reduce context-dependent learning in people with Parkinson's disease. Eur J Phys Rehabil Med. 2018 Aug; 54(4):560-567. Lee YY, Fisher BE. PMID: 28530089.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    18. Constraining movement reveals motor capability in chronic stroke: an initial study. Clin Rehabil. 2017 Aug; 31(8):1126-1133. Martinez CA, Mintz E, Ecsedy AE, Fisher BE. PMID: 27587329.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    19. 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. Fisher BE, Piraino A, Lee YY, Smith JA, Johnson S, Davenport TE, Kulig K. PMID: 27266885.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    20. 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. 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. PMID: 27145936.
      View in: PubMed   Mentions: 143     Fields:    Translation:Humans
    21. Evidence of altered corticomotor excitability following targeted activation of gluteus maximus training in healthy individuals. Neuroreport. 2016 Apr 13; 27(6):415-21. Fisher BE, Southam AC, Kuo YL, Lee YY, Powers CM. PMID: 26981714.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    22. Role of the dorsolateral prefrontal cortex in context-dependent motor performance. Eur J Neurosci. 2016 Apr; 43(7):954-60. Lee YY, Winstein CJ, Fisher BE. PMID: 26797866.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    23. Physical Therapy Residency and Fellowship Education: Reflections on the Past, Present, and Future. Phys Ther. 2016 07; 96(7):949-60. Furze JA, Tichenor CJ, Fisher BE, Jensen GM, Rapport MJ. PMID: 26678444.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    24. 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. Tretriluxana J, Kantak S, Tretriluxana S, Wu AD, Fisher BE. PMID: 26664827.
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    25. Brain Connectivity Associated with Muscle Synergies in Humans. J Neurosci. 2015 Nov 04; 35(44):14708-16. Rana M, Yani MS, Asavasopon S, Fisher BE, Kutch JJ. PMID: 26538643.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    26. Context-Dependent Learning in People With Parkinson's Disease. J Mot Behav. 2016 May-Jun; 48(3):240-8. Lee YY, Winstein CJ, Gordon J, Petzinger GM, Zelinski EM, Fisher BE. PMID: 26375786.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    27. Force Variability during Dexterous Manipulation in Individuals with Mild to Moderate Parkinson's Disease. Front Aging Neurosci. 2015; 7:151. Ko NH, Laine CM, Fisher BE, Valero-Cuevas FJ. PMID: 26321947.
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    28. Pressure-controlled treadmill training in chronic stroke: a case study with AlterG. J Neurol Phys Ther. 2015 Apr; 39(2):127-33. Lathan C, Myler A, Bagwell J, Powers CM, Fisher BE. PMID: 25742371.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    29. The Effects of Exercise on Dopamine Neurotransmission in Parkinson's Disease: Targeting Neuroplasticity to Modulate Basal Ganglia Circuitry. Brain Plast. 2015; 1(1):29-39. Petzinger GM, Holschneider DP, Fisher BE, McEwen S, Kintz N, Halliday M, Toy W, Walsh JW, Beeler J, Jakowec MW. PMID: 26512345.
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    30. Cortical activation associated with muscle synergies of the human male pelvic floor. J Neurosci. 2014 Oct 08; 34(41):13811-8. Asavasopon S, Rana M, Kirages DJ, Yani MS, Fisher BE, Hwang DH, Lohman EB, Berk LS, Kutch JJ. PMID: 25297107.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    31. 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. Fisher BE, Morton SM, Lang CE. PMID: 24806437.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    32. Treadmill exercise elevates striatal dopamine D2 receptor binding potential in patients with early Parkinson's disease. Neuroreport. 2013 Jul 10; 24(10):509-14. Fisher BE, Li Q, Nacca A, Salem GJ, Song J, Yip J, Hui JS, Jakowec MW, Petzinger GM. PMID: 23636255.
      View in: PubMed   Mentions: 39     Fields:    Translation:Humans
    33. Exercise-enhanced neuroplasticity targeting motor and cognitive circuitry in Parkinson's disease. Lancet Neurol. 2013 Jul; 12(7):716-26. Petzinger GM, Fisher BE, McEwen S, Beeler JA, Walsh JP, Jakowec MW. PMID: 23769598.
      View in: PubMed   Mentions: 93     Fields:    Translation:HumansAnimalsCells
    34. Aerobic exercise to improve executive function in Parkinson disease: a case series. J Neurol Phys Ther. 2013 Jun; 37(2):58-64. Tabak R, Aquije G, Fisher BE. PMID: 23632453.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    35. 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. Goh HT, Lee YY, Fisher BE. PMID: 23489946.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    36. Method for assessing brain changes associated with gluteus maximus activation. J Orthop Sports Phys Ther. 2013 Apr; 43(4):214-21. Fisher BE, Lee YY, Pitsch EA, Moore B, Southam A, Faw TD, Powers CM. PMID: 23485621.
      View in: PubMed   Mentions: 4     Fields:    Translation:HumansCTClinical Trials
    37. 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. Tretriluxana J, Kantak S, Tretriluxana S, Wu AD, Fisher BE. PMID: 23244391.
      View in: PubMed   Mentions: 12     Fields:    Translation:Humans
    38. Altered Dynamic Postural Control during Step Turning in Persons with Early-Stage Parkinson's Disease. Parkinsons Dis. 2012; 2012:386962. Song J, Sigward S, Fisher B, Salem GJ. PMID: 22518349.
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    39. Intervention that challenges the nervous system confronts the challenge of real-world clinical practice. J Neurol Phys Ther. 2011 Sep; 35(3):148-9. Fisher B. PMID: 21934377.
      View in: PubMed   Mentions:    Fields:    Translation:Humans
    40. The role of exercise in facilitating basal ganglia function in Parkinson's disease. Neurodegener Dis Manag. 2011 Apr 01; 1(2):157-170. Petzinger GM, Fisher BE, Akopian G, Holschneider DP, Wood R, Walsh JP, Lund B, Meshul C, Vuckovic M, Jakowec MW. PMID: 23805167.
      View in: PubMed   Mentions: 3     Fields:    
    41. 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. Kantak SS, Sullivan KJ, Fisher BE, Knowlton BJ, Winstein CJ. PMID: 22150021.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    42. 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. Vuckovic MG, Li Q, Fisher B, Nacca A, Leahy RM, Walsh JP, Mukherjee J, Williams C, Jakowec MW, Petzinger GM. PMID: 20960487.
      View in: PubMed   Mentions: 39     Fields:    Translation:AnimalsCells
    43. 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. Sungkarat S, Fisher BE, Kovindha A. PMID: 21148267.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    44. 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. Davenport TE, Kulig K, Fisher BE. PMID: 20958995.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    45. Mechanisms underlying ACL injury-prevention training: the brain-behavior relationship. J Athl Train. 2010 Sep-Oct; 45(5):513-5. Powers CM, Fisher B. PMID: 20831400.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    46. Neural substrates of motor memory consolidation depend on practice structure. Nat Neurosci. 2010 Aug; 13(8):923-5. Kantak SS, Sullivan KJ, Fisher BE, Knowlton BJ, Winstein CJ. PMID: 20622872.
      View in: PubMed   Mentions: 37     Fields:    Translation:Humans
    47. 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. Lin CH, Winstein CJ, Fisher BE, Wu AD. PMID: 20570818.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    48. Enhancing neuroplasticity in the basal ganglia: the role of exercise in Parkinson's disease. Mov Disord. 2010; 25 Suppl 1:S141-5. Petzinger GM, Fisher BE, Van Leeuwen JE, Vukovic M, Akopian G, Meshul CK, Holschneider DP, Nacca A, Walsh JP, Jakowec MW. PMID: 20187247.
      View in: PubMed   Mentions: 46     Fields:    Translation:Humans
    49. 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. Fisher BE, Davenport TE, Kulig K, Wu AD. PMID: 19460169.
      View in: PubMed   Mentions: 1     Fields:    Translation:HumansCTClinical Trials
    50. Neural correlate of the contextual interference effect in motor learning: a kinematic analysis. J Mot Behav. 2009 May; 41(3):232-42. Lin CH, Fisher BE, Wu AD, Ko YA, Lee LY, Winstein CJ. PMID: 19366656.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    51. Hemisphere specific impairments in reach-to-grasp control after stroke: effects of object size. Neurorehabil Neural Repair. 2009 Sep; 23(7):679-91. Tretriluxana J, Gordon J, Fisher BE, Winstein CJ. PMID: 19411406.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    52. 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. Song J, Fisher BE, Petzinger G, Wu A, Gordon J, Salem GJ. PMID: 19336530.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    53. 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. Lin CH, Fisher BE, Winstein CJ, Wu AD, Gordon J. PMID: 18980910.
      View in: PubMed   Mentions: 16     Fields:    Translation:Humans
    54. 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. Fisher BE, Wu AD, Salem GJ, Song J, Lin CH, Yip J, Cen S, Gordon J, Jakowec M, Petzinger G. PMID: 18534554.
      View in: PubMed   Mentions: 84     Fields:    Translation:Humans
    55. Asymmetric corticomotor excitability correlations in early Parkinson's disease. Mov Disord. 2007 Aug 15; 22(11):1587-93. Wu AD, Petzinger GM, Lin CH, Kung M, Fisher B. PMID: 17523196.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    56. 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. Petzinger GM, Walsh JP, Akopian G, Hogg E, Abernathy A, Arevalo P, Turnquist P, Vuckovic M, Fisher BE, Togasaki DM, Jakowec MW. PMID: 17507552.
      View in: PubMed   Mentions: 93     Fields:    Translation:AnimalsCells
    57. Contralateral cerebellar damage impairs imperative planning but not updating of aimed arm movements in humans. Exp Brain Res. 2006 Oct; 174(3):453-66. Fisher BE, Boyd L, Winstein CJ. PMID: 16741716.
      View in: PubMed   Mentions: 6     Fields:    Translation:Humans
    58. 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. Petzinger GM, Fisher B, Hogg E, Abernathy A, Arevalo P, Nixon K, Jakowec MW. PMID: 16385585.
      View in: PubMed   Mentions: 8     Fields:    Translation:Animals
    59. 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. Fisher BE, Petzinger GM, Nixon K, Hogg E, Bremmer S, Meshul CK, Jakowec MW. PMID: 15248294.
      View in: PubMed   Mentions: 82     Fields:    Translation:Animals
    60. Activity-dependent factors affecting poststroke functional outcomes. Top Stroke Rehabil. 2001; 8(3):31-44. Fisher BE, Sullivan KJ. PMID: 14523736.
      View in: PubMed   Mentions: 14     Fields:    
    61. Deficits in compensatory trajectory adjustments after unilateral sensorimotor stroke. Exp Brain Res. 2000 Jun; 132(3):328-44. Fisher BE, Winstein CJ, Velicki MR. PMID: 10883381.
      View in: PubMed   Mentions: 10     Fields:    Translation:Humans
    62. Influence of central set on anticipatory and triggered grip-force adjustments. Exp Brain Res. 2000 Feb; 130(3):298-308. Winstein CJ, Horak FB, Fisher BE. PMID: 10706429.
      View in: PubMed   Mentions: 4     Fields:    Translation:Humans
    63. The locus of age-related movement slowing: sensory processing in continuous goal-directed aiming. J Gerontol B Psychol Sci Soc Sci. 1996 Mar; 51(2):P94-102. Pohl PS, Winstein CJ, Fisher BE. PMID: 8785692.
      View in: PubMed   Mentions: 19     Fields:    Translation:Humans
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