All Stories

  1. The Impact of the COVID-19 Pandemic on Psychological Distress, Physical Activity, and Symptom Severity in Parkinson’s Disease

    Article • Journal of Parkinson’s Disease, October 2020, IOS Press

    Rick Helmich

  2. The Impact of the COVID-19 Pandemic on Parkinson’s Disease

    Article • Journal of Parkinson’s Disease, April 2020, IOS Press

    Rick Helmich

  3. The patchy tremor landscape

    Article • Current Opinion in Neurology, August 2018, Wolters Kluwer Health

    Rick Helmich

  4. Altered reward-related neural responses in non-manifesting carriers of the Parkinson disease related LRRK2 mutation

    Article • Brain Imaging and Behavior, July 2018, Springer Science + Business Media

    Rick Helmich

  5. The nature of postural tremor in Parkinson disease

    Article • Neurology, February 2018, Wolters Kluwer Health

    Rick Helmich

  6. The etiology of essential tremor: Genes versus environment

    Article • Parkinsonism & Related Disorders, January 2018, Elsevier

    Rick Helmich

  7. The cerebral basis of Parkinsonian tremor: A network perspective

    Article • Movement Disorders, November 2017, Wiley

    Rick Helmich

  8. Entangled cerebral networks in Parkinson’s disease

    Article • Brain, October 2017, Oxford University Press (OUP)

    Rick Helmich

  9. Pathophysiology and Management of Parkinsonian Tremor

    Article • Seminars in Neurology, May 2017, Thieme Publishing Group

    Rick Helmich

  10. Impaired dual tasking in Parkinson’s disease is associated with reduced focusing of cortico-striatal activity

    Article • Brain, March 2017, Oxford University Press (OUP)

    Rick Helmich

  11. The patient's perspective: The effect of levodopa on Parkinson symptoms

    Article • Parkinsonism & Related Disorders, February 2017, Elsevier

    Rick Helmich

  12. Cognitive Stress Reduces the Effect of Levodopa on Parkinson's Resting Tremor

    Article • CNS Neuroscience & Therapeutics, January 2017, Wiley

    Rick Helmich

  13. Dopamine controls Parkinson’s tremor by inhibiting the cerebellar thalamus

    Article • Brain, January 2017, Oxford University Press (OUP)

    Rick Helmich

  14. Knowledge gaps and research recommendations for essential tremor

    Article • Parkinsonism & Related Disorders, December 2016, Elsevier

    Rick Helmich

  15. Parkinson’s disease as a system-level disorder

    Article • npj Parkinson s Disease, December 2016, Springer Science + Business Media

    Rick Helmich

  16. Unmasking levodopa resistance in Parkinson's disease

    Article • Movement Disorders, July 2016, Wiley

    Rick Helmich

  17. A cognitive fMRI study in non-manifesting LRRK2 and GBA carriers

    Article • Brain Structure and Function, July 2016, Springer Science + Business Media

    Rick Helmich

  18. The Cerebral Network of Parkinson's Tremor: An Effective Connectivity fMRI Study

    Article • Journal of Neuroscience, May 2016, Society for Neuroscience

    Rick Helmich

  19. Consensus Paper: Towards a Systems-Level View of Cerebellar Function: the Interplay Between Cerebellum, Basal Ganglia, and Cortex

    Article • The Cerebellum, February 2016, Springer Science + Business Media

    Dr Giovanni Pezzulo, Rick Helmich

  20. Intact working memory in non-manifestingLRRK2carriers - an fMRI study

    Article • European Journal of Neuroscience, December 2015, Wiley

    Rick Helmich

  21. The Clinical Evaluation of Parkinson’s Tremor

    Article • Journal of Parkinson’s Disease, September 2015, IOS Press

    Rick Helmich

  22. Normalization of sensorimotor integration by repetitive transcranial magnetic stimulation in cervical dystonia

    Article • Journal of Neurology, May 2015, Springer Science + Business Media

    Rick Helmich

  23. Reorganization of corticostriatal circuits in healthy G2019S LRRK2 carriers

    Article • Neurology, December 2014, Wolters Kluwer Health

    Rick Helmich

  24. Greater striatal responses to medication in Parkinson׳s disease are associated with better task-switching but worse reward performance

    Article • Neuropsychologia, September 2014, Elsevier

    Rick Helmich

  25. A voxel-based morphometry and diffusion tensor imaging analysis of asymptomatic Parkinson's disease-related G2019S LRRK2 mutation carriers

    Article • Movement Disorders, January 2014, Wiley

    Rick Helmich

  26. Neural correlates of executive functions in healthy G2019S LRRK2 mutation carriers

    Article • Cortex, October 2013, Elsevier

    Rick Helmich

  27. The Pathophysiology of Essential Tremor and Parkinson’s Tremor

    Article • Current Neurology and Neuroscience Reports, July 2013, Springer Science + Business Media

    Rick Helmich

  28. The distributed somatotopy of tremor: A window into the motor system

    Article • Experimental Neurology, March 2013, Elsevier

    Rick Helmich

  29. Cerebral pathological and compensatory mechanisms in the premotor phase of leucine-rich repeat kinase 2 parkinsonism

    Article • Brain, December 2012, Oxford University Press (OUP)

    Rick Helmich

  30. Reduced parietal connectivity with a premotor writing area in writer's cramp

    Article • Movement Disorders, August 2012, Wiley

    Rick Helmich

  31. Compensatory Activity in the Extrastriate Body Area of Parkinson's Disease Patients

    Article • Journal of Neuroscience, July 2012, Society for Neuroscience

    Rick Helmich

  32. Cerebral causes and consequences of parkinsonian resting tremor: a tale of two circuits?

    Article • Brain, March 2012, Oxford University Press (OUP)

    Rick Helmich

  33. Aberrant reward processing in Parkinson's disease is associated with dopamine cell loss

    Article • NeuroImage, February 2012, Elsevier

    Rick Helmich

  34. Writer's cramp: Increased dorsal premotor activity during intended writing

    Article • Human Brain Mapping, November 2011, Wiley

    Rick Helmich

  35. Motor imagery evokes increased somatosensory activity in parkinson's disease patients with tremor

    Article • Human Brain Mapping, June 2011, Wiley

    Rick Helmich

  36. Pallidal dysfunction drives a cerebellothalamic circuit into Parkinson tremor

    Article • Annals of Neurology, February 2011, Wiley

    Rick Helmich

  37. Gait-related cerebral alterations in patients with Parkinson’s disease with freezing of gait

    Article • Brain, December 2010, Oxford University Press (OUP)

    Rick Helmich

  38. The dynamic regulation of cortical excitability is altered in episodic ataxia type 2

    Article • Brain, November 2010, Oxford University Press (OUP)

    Rick Helmich

  39. Side of symptom onset affects motor dysfunction in Parkinson's disease

    Article • Neuroscience, November 2010, Elsevier

    Rick Helmich

  40. Striatal Dopamine Mediates the Interface between Motivational and Cognitive Control in Humans: Evidence from Genetic Imaging

    Article • Neuropsychopharmacology, May 2010, Springer Science + Business Media

    Rick Helmich

  41. Spatial Remapping of Cortico-striatal Connectivity in Parkinson's Disease

    Article • Cerebral Cortex, August 2009, Oxford University Press (OUP)

    Rick Helmich

  42. Increased Dependence of Action Selection on Recent Motor History in Parkinson's Disease

    Article • Journal of Neuroscience, May 2009, Society for Neuroscience

    Rick Helmich

  43. Cerebral correlates of motor imagery of normal and precision gait

    Article • NeuroImage, July 2008, Elsevier

    Rick Helmich

  44. Ischemic neuropathy and rhabdomyolysis as presenting symptoms of postpartum cardiomyopathy

    Article • Journal of Thrombosis and Thrombolysis, June 2008, Springer Science + Business Media

    Rick Helmich

  45. Abnormal plasticity of the sensorimotor cortex to slow repetitive transcranial magnetic stimulation in patients with writer's cramp

    Article • Movement Disorders, January 2007, Wiley

    Rick Helmich

  46. Cerebral compensation during motor imagery in Parkinson's disease

    Article • Neuropsychologia, January 2007, Elsevier

    Rick Helmich

  47. Posture influences motor imagery: An fMRI study

    Article • NeuroImage, November 2006, Elsevier

    Rick Helmich

  48. Repetitive transcranial magnetic stimulation to improve mood and motor function in Parkinson's disease

    Article • Journal of the Neurological Sciences, October 2006, Elsevier

    Rick Helmich

  49. Hemispheric asymmetry and somatotopy of afferent inhibition in healthy humans

    Article • Experimental Brain Research, July 2005, Springer Science + Business Media

    Rick Helmich