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My current work focuses on understanding the interaction between balance, postural control, and cognitive deficits in neurological populations such as people with Parkinson’s disease and multiple sclerosis. In particular, I am interested in how gait and postural control can be improved by rehabilitation using principles of motor learning. I am also engaged in work to better understand reactive, or protective postural responses after a slip or trip in neurological populations.
Peterson DS, & Horak FB. Effects of Freezing of gait on improvement of protective stepping in people with Parkinson’s disease. Accepted & in Press: Neuroscience
Peterson DS, Dijkstra BW*, & Horak FB. (2016) Postural motor learning in People with Parkinson's disease. Accepted & in Press: Journal of Neurology.
Peterson DS & Horak FB. (2016) Effects of levodopa on improvement in protective stepping in people with Parkinson’s disease. Accepted & in Press: Neurorehabilitation and Neural Repair
Peterson DS, Gera G, Horak FB, & Fling BW. (2016) Supraspinal control of postural responses in people with multiple sclerosis. Accepted & in Press: Gait & Posture
Peterson DS & Horak FB. (2016) Neural Control of Walking in People with Parkinson’s disease Physiology (Bethesda). 2016 Mar;31(2):95-107. doi: 10.1152/physiol.00034.2015.
Peterson DS, Huisinga J, Spain B, & Horak F. (2016) Compensatory Stepping in People with Multiple Sclerosis. Accepted & In Press: Archives of Physical Medicine & Rehabilitation. [Epub ahead of print]. doi: 10.1016/j.apmr.2015.10.103. PMID: 26603657. EDITORS SELECTION, APRIL 2016
Peterson DS, King LA, Cohen RG, & Horak FB. (2016) Cognitive Contributions to Freezing of Gait in Parkinson Disease- Implications for Physical Rehabilitation. Physical Therapy Journal. [Epub ahead of print] PMID: 26381808
Peterson DS & Smulders K. (2015) Cues and attention in Parkinsonian gait: Potential mechanisms and future directions. Front. Neurol., 08 Dec 2015. http://dx.doi.org/10.3389/fneur.2015.00255
Peterson DS, Fling B, Mancini M, Cohen RG, Nutt J, & Horak FB. (2015) Dual Task Interference and Pedunculopontine Nucleus Connectivity in people with Parkinson’s Disease who Experience Freezing. Journal of Neurology, Neurosurgery, and Psychiatry; 86:786-792. doi:10.1136/jnnp-2014-308840.
Dijkstra BW*, Horak F, Kamsma Y, & Peterson DS. (2015) The Effects of Age on Postural Motor Learning in Compensatory Stepping. Frontiers in Aging Neuroscience. Vol 7. ISSN: 1663-4365. DOI. 10.3389/fnagi.2015.00201
King LA, Peterson DS, Mancini M, Carlson-Kuhta P, Fling BW, Nutt J, Carter J, Winters-Stone KM, & Horak FB. (2015) Do cognitive measures and brain circuitry predict outcomes of exercise in Parkinson Disease: a randomized clinical trial. BMC Neurol. 2015 Oct 24;15(1):218. PubMed PMID: 26499867.
Peterson DS, Pickett KA, Perlmutter J, & Earhart GE. (2014) Gait Related Brain Activity in People with Parkinson Disease Who Experience Freezing of Gait. PLoS ONE; Mar;9(3):e90634.
Peterson DS, Pickett KA, Perlmutter J, & Earhart GE. (2013) Brain Activity during Complex Imagined Gait Tasks in Parkinson Disease. Clinical Neurophysiology. [Epub ahead of print] doi: 10.1016/j.clinph.2013.10.008.
Williams AJ, Peterson DS, Ionno M, & Earhart GE. (2013) Upper Extremity Freezing and Dyscoordination in Parkinson Disease: Effects of Amplitude and Cadence Manipulations. Parkinson Disease doi: 10.1155/2013/595378
Williams AJ, Peterson DS, & Earhart GE. (2013) Gait Coordination in Parkinson Disease: Effects of Step Length and Cadence Manipulations. Gait and Posture. Jun;38(2):340-4
Torry MR, Shelburne KB, Myers C, Giphart JE, Pennington W, Krong JP, Peterson DS, Steadman JR, & Woo SLY. (2013) High Knee Valgus in Female Subjects Does Not Yield Higher Anterior and Lateral Tibial Translations During Drop Landings: A Biplane Fluoroscopy Study. Journal of Orthopaedic Research Feb;31(2):257-67
Peterson DS, Plotnik M, Hausdorff J, & Earhart GM. (2012) Evidence for a relationship between bilateral coordination during complex gait tasks and freezing of gait in Parkinson’s disease, Parkinsonism and Related Disorders; 2012 Nov;18(9):1022-6. doi: 10.1016/j.parkreldis.2012.05.019.
Peterson DS, Pickett KA, & Earhart GM. (2012) Effects of Levodopa on Vividness of Motor Imagery in Parkinson Disease. Journal of Parkinson’s Disease; 2(2)127-133; doi: 10.3233/PJD-1012-12077
Pickett KA, Peterson DS, & Earhart GM. (2012) Motor imagery of gait tasks in individuals with Parkinson disease. Journal of Parkinson’s Disease, 2(1):19-22. doi: 10.3233/JPD-2012-11045
Torry MR, Shelburne KB, Peterson DS, Giphart JE, Krong JP, Myers C, Steadman JR, & Woo SLY. (2011) Knee Kinematic Profiles During Drop Landings: A Biplane Fluoroscopy Study, Medicine Science in Sports & Exercise. Mar;43(3):533-41. PMID: 20689456; doi: 10.1249/MSS.0b013e3181f1e491
Myers CA, Torry MR, Peterson DS, Shelburne KB, Giphart JE, Krong J, Woo SLY, & Steadman JR. (2011) Measurements of Tibiofemoral Kinematics During Soft and Stiff Drop Landings Using Biplane Fluoroscopy. American Journal of Sports Medicine Aug;39(8):1714-22. PMID: 21602566
Torry MR, Myers C, Shelburne, KB, Peterson DS, Giphart JE, Pennington WW, Krong JP, Woo SLY, & Steadman, JR. (2011) Relationship of Knee Shear Force and Quadriceps Extensor Moment on Knee Translations in Females Performing Drop Landings: A Biplane Fluoroscopy Study. Clinical Biomechanics (26);1019-1024; doi:10.1016/j.clinbiomech.2011.06.010.
Peterson DS, Martin PE (2010) Effects of Age and Walking Speed on Coactivation and Cost of Walking in Healthy Adults. Gait and Posture. Mar; 31(3):355-9. PMID: 2010666
National Multiple Sclerosis Society (NMSS) Research Grant (2017-2020)
Funding Source: NMSS
Title: Gaze and postural stability in persons with MS at risk for falls: Characterizing deficits and response to treatment
Purpose: The purpose of this RCT is to characterize the impact of task specific gaze and postural stability training on balance, dizziness, and vestibular function in people with MS.
Total Amount: $458,000
Role: Co-PI; with Dibble, L
National Multiple Sclerosis Society (NMSS) Pilot Award (9/2016-9/2018)
Funding Source: NMSS
Title: Compensatory Stepping in People with Multiple Sclerosis
Purpose: Determine the degree to which people with multiple sclerosis can improve protective stepping over a short-term (1-day) practice period.
Amount (total): $39,640
Role: Co-PI; with Foreman, B
Career Development Award (CDA-1); (Award #I01BX007080) (9/2014-10/2016)
Funding Source: U.S. Department of Veterans Affairs, RR&D
Title: “Effect of levodopa on postural motor learning in Parkinson disease”
Purpose: Understand the degree to which people with Parkinson’s disease can improve protective stepping responses after repeated external perturbations (i.e. simulated trips). In particular, we were interested in whether levodopa, a commonly used pharmacological intervention for Parkinson’s disease affected learning in this population.
Total Amount: $160,983
Early Clinical Investigator Award (3/2014 - 2/2015)
Funding Source: Medical Research Foundation of Oregon.
Title: ““Postural motor learning in Parkinson's disease: Effects of levodopa”
Purpose: Characterize the performance and improvement of protective stepping between healthy young, healthy old, individuals with Parkinson’s disease.
Total Amount: $19,971