Research Interests
The physiology underlying fatigue in multiple sclerosis, and how to alleviate this. In particular using neuroplastic brain stimulation to alter neural network dysfunction.
DRCMR
The physiology underlying fatigue in multiple sclerosis, and how to alleviate this. In particular using neuroplastic brain stimulation to alter neural network dysfunction.

Neurological Department, Nordsjællands Hospital Hillerød
2023 – Present | PhD student at DRCMR |
2021 – 2023 | Research Assistant, DRCMR |
2021 – 2022 | 1st year specialty training in neurology, Neurological Department, Nordsjællands Hospital Hillerød |
2020 – 2021 | Resident, Neurological Department, Nordsjællands Hospital Hillerød & GP, Helsingør |
2020 – 2020 | Resident, Psychiatric Center Ballerup |
2020 | MSc in Medicine, University of Copenhagen |
2017 | BSc in Medicine, University of Copenhagen |
Nygaard S, Madsen MAJ, Wiggermann V, Cabras C, Christiansen L, Svatkova A, Lundell H, Højsgaard Chow H, Romme Christensen J, Blinkenberg M, Sellebjerg F and Siebner H (2026), 'Repetitive transcranial magnetic stimulation to alleviate fatigue in multiple sclerosis—study protocol for a randomized sham-controlled double-blinded clinical trial', Frontiers in Neurology, 17, doi:10.3389/fneur.2026.1759679
Krohne LG, Nygaard S, Ottenheijm ME, Liu ML, Thielscher A, Siebner HR and Madsen KH (2025), 'Paired-pulse TMS of premotor cortex produces non-linear suppressive effects on neural activity in the targeted network - a TMS-fMRI study', NeuroImage, 322, doi:10.1016/j.neuroimage.2025.121533