Dr. Harrison Walker’s UAB Scholar Profile

Dr. Harrison Walker’s Google Scholar Profile

1. Bentley JN, Irwin ZT, Black S, Roach M, Vaden RJ, Gonzalez CL, Khan AU, El-Sayed GA, Knight RT, Guthrie BL, Walker HC. Subcortical intermittent theta-burst stimulation (iTBS) increases theta-power in dorsolateral prefrontal cortex (DLPFC). Front Neurosci. 2020. In Press.

2. Niccolai L, Aita SL, Walker HC, Martin RC, Clay OJ, Crowe M, Triebel KL. An examination of the neurocognitive profile and base rate of performance impairment in primary dystonia. J Clin Neurosci. 2020 Jan 10. pii: S0967-5868(19)32157-5. doi: 10.1016/j.jocn.2019.12.050. [Epub ahead of print] PMID: 31932183.

3. Awad MZ, Irwin ZT, Vaden RJ, Guthrie BL, Walker HC. Short latency cortical evoked potentials elicited by subthalamic nucleus deep brain stimulation: Commentary and results from paired pulse studies. Clin Neurophysiol. 2019 Dec 2. pii: S1388-2457(19)31311-2. doi: 10.1016/j.clinph.2019.11.015. [Epub ahead of print] PMID: 31879060.

4. Atchley TJ, Laskay NMB, Sherrod BA, Rahman AKMF, Walker HC, Guthrie BL. Reoperation for device infection and erosion following deep brain stimulation implantable pulse generator placement. J Neurosurg. 2019 Jun 7:1-8. doi: 10.3171/2019.3.JNS183023. [Epub ahead of print]. PubMed PMID: 31174189.

5. Elsayed GA, Menendez JY, Tabibian BE, Chagoya G, Omar NB, Zeiger E, Walters BC, Walker H, Guthrie BL. Patient satisfaction in surgery for Parkinson’s disease: A systematic review of the literature. Cureus. 2019 Mar 25;11(3):e4316. doi: 10.7759/cureus.4316. PMID: 31183296; PMCID: PMC6538104.

6. Romeo A, Dubuc DM, Gonzalez CL, Patel ND, Cutter G, Delk H, Guthrie BL, Walker HC. Cortical activation elicited by subthalamic deep brain stimulation predicts postoperative motor side effects. Neuromodulation. 2019 Jun;22(4):456-464. doi: 10.1111/ner.12901. Epub 2019 Mar 7. PubMed PMID: 30844131.

7. Walker HC, Faulk J, Rahman AF, Gonzalez CL, Roush P, Nakhmani A, Crowell JL, Guthrie BL. Awake testing during deep brain stimulation surgery predicts postoperative stimulation side effect thresholds. Brain Sci. 2019 Feb 18;9(2). PubMed PMID: 30781641.

8. Iacono MI, Atefi SR, Mainardi L, Walker HC, Angelone LM, Bonmassar G. A study on the feasibility of the deep brain stimulation (DBS) electrode localization based on scalp electric potential recordings. Front Physiol. 2019 Jan 4; PubMed PMID: 30662407; PubMed Central PMCID: PMC6328462.

9. Mitchell KT, Larson P, Starr PA, Okun MS, Wharen RE Jr, Uitti RJ, Guthrie BL, Peichel D, Pahwa R, Walker HC, Foote K, Marshall FJ, Jankovic J, Simpson R, Phibbs F, Neimat JS, Stewart RM, Dashtipour K, Ostrem JL. Benefits and risks of unilateral and bilateral ventral intermediate nucleus deep brain stimulation for axial essential tremor symptoms. Parkinsonism Relat Disord. 2018 SEP 6. Pii: S1353-8020(18)30389-4. doi: 10.1016/j.parkreldis.2018.09.004. [Epub ahead of print] PubMed PMID: 30220556.

10. Szaflarski JP, Griffis J, Vannest J, Allendorfer JB, Nenert R, Amara AW, Sung V, Walker HC, Martin AN, Mark VW, Zhou X. A feasibility study of combined intermittent theta burst stimulation and modified constraint-induced aphasia therapy in chronic post-stroke aphasia. Restor Neurol Neurosci. 2018 Jun 6. doi: 10.3233/RNN-180812. [Epub ahead of print]

11. Ramirez-Zamora A, Giordano JJ, Gunduz A, Brown P, Sanchez JC, Foote KD, Almeida L, Starr PA, Bronte-Stewart HM, Hu W, McIntyre C, Goodman W, Kumsa D, Grill WM, Walker HC, Johnson MD, Vitek JL, Greene D, Rizzuto DS, Song D, Berger TW, Hampson RE, Deadwyler SA, Hochberg LR, Schiff ND, Stypulkowski P, Worrell G, Tiruvadi V, Mayberg HS, Jimenez-Shahed J, Nanda P, Sheth SA, Gross RE, Lempka SF, Li L, Deeb W, Okun MS. Evolving applications, technological challenges and future opportunities in neuromodulation: Proceedings of the Fifth Annual Deep Brain Stimulation Think Tank. Front Neurosci. 2018 Jan 24;11:734. doi: 10.3389/fnins.2017.00734. eCollection 2017. PubMed PMID: 29416498; PubMed Central PMCID: PMC5787550.

12. Martinez-Ramirez D, Jimenez-Shahed J, Leckman JF, Porta M, Servello D, Meng FG, Kuhn J, Huys D, Baldermann JC, Foltynie T, Hariz MI, Joyce EM, Zrinzo L, Kefalopoulou Z, Silburn P, Coyne T, Mogilner AY, Pourfar MH, Khandhar SM, Auyeung M, Ostrem JL, Visser-Vandewalle V, Welter ML, Mallet L, Karachi C, Houeto JL, Klassen BT, Ackermans L, Kaido T, Temel Y, Gross RE, Walker HC, Lozano AM, Walter BL, Mari Z, Anderson WS, Changizi BK, Moro E, Zauber SE, Schrock LE, Zhang JG, Hu W, Rizer K, Monari EH, Foote KD, Malaty IA, Deeb W, Gunduz A, Okun MS. Efficacy and safety of deep brain stimulation in Tourette syndrome: The international Tourette syndrome deep brain stimulation public database and registry. JAMA Neurol. 2018 Jan 16. doi: 10.1001/jamaneurol.2017.4317. [Epub ahead of print] PubMed PMID: 29340590.

13. Middlebrooks EH, Holanda VM, Tuna IS, Deshpande HD, Bredel M, Almeida L, Walker HC, Guthrie BL, Foote KD, Okun MS. A method for pre-operative single-subject thalamic segmentation based on probabilistic tractography for essential tremor deep brain stimulation. Neuroradiology. 2018 Mar;60(3):303-309. doi: 10.1007/s00234-017-1972-2. Epub 2018 Jan 6. PubMed PMID: 29307012.

14. Shenai MB, Patel DM, Romeo A, Whisenhunt JD, Walker HC, Guthrie S, Guthrie BL. The relationship of electrophysiologic subthalamic nucleus length as a predictor of outcomes in deep brain stimulation for Parkinson disease. Stereotact Funct Neurosurg. 2017;95(5):341-347. doi: 10.1159/000478023. Epub 2017 Oct 6. PubMed PMID: 28982098.

15. Amara AW, Walker HC, Joop A, Cutter G, DeWolfe JL, Harding SM, Standaert DG. Effects of subthalamic nucleus deep brain stimulation on objective sleep outcomes in Parkinson’s disease. Mov Disord Clin Pract. 2017 Mar-Apr;4(2):183-190. doi: 10.1002/mdc3.12375. Epub 2016 Jun 6. PubMed PMID: 28924578; PubMed Central PMCID: PMC5600204.

16. Wharen RE Jr, Okun MS, Guthrie BL, Uitti RJ, Larson P, Foote K, Walker H, Marshall FJ, Schwalb J, Ford B, Jankovic J, Simpson R, Dashtipour K, Phibbs F, Neimat JS, Stewart RM, Peichel D, Pahwa R, Ostrem JL; SJM DBS ET Study Group. Thalamic DBS with a constant-current device in essential tremor: A controlled clinical trial. Parkinsonism Relat Disord. 2017 Jul;40:18-26. doi: 10.1016/j.parkreldis.2017.03.017. Epub 2017 Mar 30. PubMed PMID: 28400200.

17. Birchall EL, Walker HC, Cutter G, Guthrie S, Joop A, Memon RA, Watts RL, Standaert DG, Amara AW. The effect of unilateral subthalamic nucleus deep brain stimulation on depression in Parkinson’s disease. Brain Stimul. 2017 May – Jun;10(3):651-656. doi: 10.1016/j.brs.2016.12.014. Epub 2016 Dec 27. PubMed PMID: 28065487; PubMed Central PMCID: PMC5410399.

18. Deeb W, Giordano JJ, Rossi PJ, Mogilner AY, Gunduz A, Judy JW, Klassen BT, Butson CR, Van Horne C, Deny D, Dougherty DD, Rowell D, Gerhardt GA, Smith GS, Ponce FA, Walker HC, Bronte-Stewart HM, Mayberg HS, Chizeck HJ, Langevin JP, Volkmann J, Ostrem JL, Shute JB, Jimenez-Shahed J, Foote KD, Wagle Shukla A, Rossi MA, Oh M, Pourfar M, Rosenberg PB, Silburn PA, de Hemptine C, Starr PA, Denison T, Akbar U, Grill WM, Okun MS. Proceedings of the Fourth Annual Deep Brain Stimulation Think Tank: A review of emerging issues and technologies. Front Integr Neurosci. 2016 Nov 22;10:38. eCollection 2016. PubMed PMID: 27920671; PubMed Central PMCID: PMC5119052.

19. Almeida L, Rawal PV, Ditty B, Smelser BL, Huang H, Okun MS, Guthrie BL, Walker HC. Deep brain stimulation battery longevity: Comparison of monopolar versus bipolar stimulation modes. Mov Disord Clin Pract. 2016 Jul-Aug;3(4):359-366. Epub 2016 Jan 9. PubMed PMID: 27617270; PubMed Central PMCID: PMC5015697.

20. Deeb W, Rossi PJ, Porta M, Visser-Vandewalle V, Servello D, Silburn P, Coyne T, Leckman JF, Foltynie T, Hariz M, Joyce EM, Zrinzo L, Kefalopoulou Z, Welter ML, Karachi C, Mallet L, Houeto JL, Shahed-Jimenez J, Meng FG, Klassen BT, Mogilner AY, Pourfar MH, Kuhn J, Ackermans L, Kaido T, Temel Y, Gross RE, Walker HC, Lozano AM, Khandhar SM, Walter BL, Walter E, Mari Z, Changizi BK, Moro E, Baldermann JC, Huys D, Zauber SE, Schrock LE, Zhang JG, Hu W, Foote KD, Rizer K, Mink JW, Woods DW, Gunduz A, Okun MS. The International Deep brain stimulation registry and database for Gilles de la Tourette syndrome: How does it work? Front Neurosci. 2016 Apr 25;10:170. doi: 10.3389/fnins.2016.00170. eCollection 2016. PubMed PMID: 27199634; PubMed Central PMCID: PMC4842757.

21. Ziman N, Coleman RR, Starr PA, Volz M, Marks WJ Jr, Walker HC, Guthrie SL, Ostrem JL. Pregnancy in a series of dystonia patients treated with deep brain stimulation: Outcomes and management recommendations. Stereotact Funct Neurosurg. 2016;94(1):60-5. doi: 10.1159/000444266. Epub 2016 Mar 16. PubMed PMID: 26977859.

22. Brosius SN, Gonzalez CL, Shuresh J, Walker HC. Reversible improvement in severe freezing of gait from Parkinson’s disease with unilateral interleaved subthalamic brain stimulation. Parkinsonism Relat Disord. 2015 Dec;21(12):1469-70. doi: 10.1016/j.parkreldis.2015.09.047. Epub 2015 Oct 8. PubMed PMID: 26482492.

23. Patel DM, Walker HC, Brooks R, Omar N, Ditty B, Guthrie BL. Adverse events associated with deep brain stimulation for movement disorders: analysis of 510 consecutive cases. Neurosurgery. 2015 Mar;11 Suppl 2:190-9. doi: 10.1227/NEU.0000000000000659. PubMed PMID: 25599204.

24. Shenai MB, Romeo A, Walker HC, Guthrie S, Watts RL, Guthrie BL. Spatial topographies of unilateral subthalamic nucleus deep brain stimulation efficacy for ipsilateral, contralateral, midline, and total Parkinson disease motor symptoms. Neurosurgery. 2015 Mar;11 Suppl 2:80-8; discussion 88. doi: 10.1227/NEU.0000000000000613. PubMed PMID: 25599197.

25. Rinker JR 2nd, Salter AR, Walker H, Amara A, Meador W, Cutter GR. Prevalence and characteristics of tremor in the NARCOMS multiple sclerosis registry: a cross-sectional survey. BMJ Open. 2015 Jan 8;5(1):e006714. doi: 10.1136/bmjopen-2014-006714. PubMed PMID: 25573524; PubMed Central PMID: PMC4289717.

26. Gunduz A, Morita H, Rossi PJ, Allen WL, Alterman RL, Bronte-Stewart H, Butson CR, Charles D, Deckers S, de Hemptinne C, DeLong M, Dougherty D, Ellrich J, Foote KD, Giordano J, Goodman W, Greenberg BD, Greene D, Gross R, Judy JW, Karst E, Kent A, Kopell B, Lang A, Lozano A, Lungu C, Lyons KE, Machado A, Martens H, McIntyre C, Min HK, Neimat J, Ostrem J, Pannu S, Ponce F, Pouratian N, Reymers D, Schrock L, Sheth S, Shih L, Stanslaski S, Steinke GK, Stypulkowski P, Tröster AI, Verhagen L, Walker H, Okun MS. Proceedings of the Second Annual Deep Brain Stimulation Think Tank: What’s in the Pipeline. Int J Neurosci. 2015;125(7):475-85. doi: 10.3109/00207454.2014.999268. Epub 2015 May 25. Review. PubMed PMID: 25526555; PubMed Central PMCID: PMC4743588.

27. Schrock LE, Mink JW, Woods DW, Porta M, Servello D, Visser-Vandewalle V, Silburn PA, Foltynie T, Walker HC, Shahed-Jimenez J, Savica R, Klassen BT, Machado AG, Foote KD, Zhang JG, Hu W, Ackermans L, Temel Y, Mari Z, Changizi BK, Lozano A, Auyeung M, Kaido T, Agid Y, Welter ML, Khandhar SM, Mogilner AY, Pourfar MH, Walter BL, Juncos JL, Gross RE, Kuhn J, Leckman JF, Neimat JA, Okun MS; Tourette Syndrome Association International Deep Brain Stimulation (DBS) Database and Registry Study Group. Tourette syndrome deep brain stimulation: a review and updated recommendations. Mov Disord. 2015 Apr;30(4):448-71. doi: 10.1002/mds.26094. Epub 2014 Dec 5. Review. PubMed PMID: 25476818.

28. Rawal PV, Almeida L, Smelser LB, Huang H, Guthrie BL, Walker HC. Shorter pulse generator longevity and more frequent stimulator adjustments with pallidal DBS for dystonia versus other movement disorders. Brain Stimul. 2014 May-Jun;7(3):345-9. doi: 10.1016/j.brs.2014.01.008. Epub 2014 Jan 18. PubMed PMID: 24548586; PubMed Central PMCID: PMC4011995.

29. Sung VW, Watts RL, Schrandt CJ, Guthrie S, Wang D, Amara AW, Guthrie BL, Walker HC. The relationship between clinical phenotype and early staged bilateral deep brain stimulation in Parkinson disease. J Neurosurg. 2013 Dec;119(6):1530-6. doi: 10.3171/2013.8.JNS122025. Epub 2013 Sep 27. PubMed PMID: 24074493; PubMed Central PMCID: PMC3992872.

30. Okun MS, Foote KD, Wu SS, Ward HE, Bowers D, Rodriguez RL, Malaty IA, Goodman WK, Gilbert DM, Walker HC, Mink JW, Merritt S, Morishita T, Sanchez JC. A trial of scheduled deep brain stimulation for Tourette syndrome: moving away from continuous deep brain stimulation paradigms. JAMA Neurol. 2013 Jan;70(1):85-94. doi: 10.1001/jamaneurol.2013.580. PubMed PMID: 23044532.

31. Walker HC, Huang H, Gonzalez CL, Bryant JE, Killen J, Knowlton RC, Montgomery EB Jr, Cutter GC, Yildirim A, Guthrie BL, Watts RL. Short latency activation of cortex by clinically effective thalamic brain stimulation for tremor. Mov Disord. 2012 Sep 15;27(11):1404-12. doi: 10.1002/mds.25137. Epub 2012 Aug 27. PubMed PMID: 22926754; PubMed Central PMCID: PMC3691999.

32. Walker HC, Huang H, Gonzalez CL, Bryant JE, Killen J, Cutter GR, Knowlton RC, Montgomery EB, Guthrie BL, Watts RL. Short latency activation of cortex during clinically effective subthalamic deep brain stimulation for Parkinson’s disease. Mov Disord. 2012 Jun;27(7):864-73. doi: 10.1002/mds.25025. Epub 2012 May 30. PubMed PMID: 22648508; PubMed Central PMCID: PMC3636546.

33. Amara AW, Bashir K, Palmer CA, Walker HC. Challenges in diagnosis of isolated central nervous system vasculitis. Brain Behav. 2011 Sep;1(1):57-61. doi: 10.1002/brb3.12. PubMed PMID: 22398982; PubMed Central PMCID: PMC3217675.

34. Lee EM, Kurundkar A, Cutter GR, Huang H, Guthrie BL, Watts RL, Walker HC. Comparison of weight changes following unilateral and staged bilateral STN DBS for advanced PD. Brain Behav. 2011 Sep;1(1):12-8. doi: 10.1002/brb3.9. PubMed PMID: 22398977; PubMed Central PMCID: PMC3217670.

35. Amara AW, Standaert DG, Guthrie S, Cutter G, Watts RL, Walker HC. Unilateral subthalamic nucleus deep brain stimulation improves sleep quality in Parkinson’s disease. Parkinsonism Relat Disord. 2012 Jan;18(1):63-8. doi: 10.1016/j.parkreldis.2011.09.001. Epub 2011 Sep 15. PubMed PMID: 21924664; PubMed Central PMCID: PMC3249526.

36. Montgomery EB Jr, Huang H, Walker HC, Guthrie BL, Watts RL. High-frequency deep brain stimulation of the putamen improves bradykinesia in Parkinson’s disease. Mov Disord. 2011 Oct;26(12):2232-8. doi: 10.1002/mds.23842. Epub 2011 Jun 28. PubMed PMID: 21714010; PubMed Central PMCID: PMC4151533.

37. Amara AW, Watts RL, Walker HC. The effects of deep brain stimulation on sleep in Parkinson’s disease. Ther Adv Neurol Disord. 2011 Jan;4(1):15-24. doi: 10.1177/1756285610392446. PubMed PMID: 21339905; PubMed Central PMCID: PMC3036959.

38. Walker HC, Watts RL, Schrandt CJ, Huang H, Guthrie SL, Guthrie BL, Montgomery EB Jr. Activation of subthalamic neurons by contralateral subthalamic deep brain stimulation in Parkinson disease. J Neurophysiol. 2011 Mar;105(3):1112-21. doi: 10.1152/jn.00266.2010. Epub 2010 Dec 22. PubMed PMID: 21177996; PubMed Central PMCID: PMC3074414.

39. Ford MP, Malone LA, Walker HC, Nyikos I, Yelisetty R, Bickel CS. Step activity in persons with Parkinson’s disease. J Phys Act Health. 2010 Nov;7(6):724-9. PubMed PMID: 21088302.

40. Walker HC, Phillips DE, Boswell DB, Guthrie BL, Guthrie SL, Nicholas AP, Montgomery EB, Watts RL. Relief of acquired stuttering associated with Parkinson’s disease by unilateral left subthalamic brain stimulation. J Speech Lang Hear Res. 2009 Dec;52(6):1652-7. doi: 10.1044/1092-4388(2009/08-0089). PubMed PMID: 19951930.

41. Shenai MB, Walker H, Guthrie S, Watts R, Guthrie BL. Construction of relational topographies from the quantitative measurements of functional deep brain stimulation using a ‘roving window’ interpolation algorithm. Stereotact Funct Neurosurg. 2010;88(1):16-23. doi: 10.1159/000260075. Epub 2009 Nov 20. PubMed PMID: 19940545.

42. Walker HC, Watts RL, Guthrie S, Wang D, Guthrie BL. Bilateral effects of unilateral subthalamic deep brain stimulation on Parkinson’s disease at 1 year. Neurosurgery. 2009 Aug;65(2):302-9; discussion 309-10. doi: 10.1227/01.NEU.0000349764.34211.74. PubMed PMID: 19625909.

43. Walker HC, Lyerly M, Cutter G, Hagood J, Stover NP, Guthrie SL, Guthrie BL, Watts RL. Weight changes associated with unilateral STN DBS and advanced PD. Parkinsonism Relat Disord. 2009 Nov;15(9):709-11. doi: 10.1016/j.parkreldis.2009.01.009. Epub 2009 Mar 9. PubMed PMID: 19272829.

44. Stover NP, Walker HC, Watts RL. Corticobasal degeneration. Handb Clin Neurol. 2007;84:351-72. doi: 10.1016/S0072-9752(07)84048-6. PubMed PMID: 18808957.

45. Walker HC, Lawrence JJ, McBain CJ. Activation of kinetically distinct synaptic conductances on inhibitory interneurons by electrotonically overlapping afferents. Neuron. 2002 Jul 3;35(1):161-71. PubMed PMID: 12123616.