Search

Your search keyword '"Rosner, Jan"' showing total 109 results
Start Over Author "Rosner, Jan"
109 results on '"Rosner, Jan"'

101. Normative data for the segmental acquisition of contact heat evoked potentials in cervical dermatomes

Author

Jutzeler, Catherine R, Rosner, Jan, Rinert, Janosch, Kramer, John L K, Curt, Armin, Jutzeler, Catherine R, Rosner, Jan, Rinert, Janosch, Kramer, John L K, and Curt, Armin

Abstract

Contact heat evoked potentials (CHEPs) represent a neurophysiological approach to assess conduction in the spinothalamic tract. The aim of this study was to establish normative values of CHEPs acquired from cervical dermatomes (C4, C6, C8) and examine the potential confounds of age, sex, and height. 101 (49 male) healthy subjects of three different age groups (18-40, 41-60, and 61-80 years) were recruited. Normal (NB, 35-52 °C) followed by increased (IB, 42-52 °C) baseline stimulation protocols were employed to record CHEPs. Multi-variate linear models were used to investigate the effect of age, sex, and height on the CHEPs parameters (i.e., N2 latency, N2P2 amplitude, rating of perceived intensity). Compared to NB, IB stimulation reduced latency jitter within subjects, yielding larger N2P2 amplitudes, and decreased inter-subject N2 latency variability. Age was associated with reduced N2P2 amplitude and prolonged N2 latency. After controlling for height, male subjects had significantly longer N2 latencies than females during IB stimulation. The study provides normative CHEPs data in a large cohort of healthy subjects from segmentally examined cervical dermatomes. Age and sex were identified as important factors contributing to N2 latency and N2P2 amplitude. The normative data will improve the diagnosis of spinal cord pathologies.

Published
2016

104. Clinical/Scientific Notes.

Author

Killeen, Tim, Rosner, Jan, Jutzeler, Catherine R., Hupp, Markus, Heilbronner, Raoul, and Curt, Armin

Published
2016

106. Les tendances de développement du droit international de travail

Author

Rosner, Jan and Szkoła Główna Planowania i Statystyki w Warszawie, Katedra Polityki Społecznej i Ekonomiki Pracy

Abstract

Zadanie pt. „Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki” nr 885/P-DUN/2014 dofinansowane zostało ze środków MNiSW w ramach działalności upowszechniającej naukę.

Published
1981

108. Directional recordings of somatosensory evoked potentials from the sensory thalamus in chronic poststroke pain patients.

Author

Nowacki A, Zhang D, Wermelinger J, Abel Alvarez Abut P, Rosner J, Pollo C, and Seidel K

Subjects
Humans, Evoked Potentials, Somatosensory physiology, Electrodes, Median Nerve, Thalamus physiology, Pain
Abstract

Objective: The aim of this feasibility study was to investigate the properties of median nerve somatosensory evoked potential (SEPs) recorded from segmented Deep Brain Stimulation (DBS) leads in the sensory thalamus (VP) and how they relate to clinical and anatomical findings., Methods: We analyzed four patients with central post-stroke pain and DBS electrodes placed in the VP. Median nerve SEPs were recorded with referential and bipolar montages. Electrode positions were correlated with thalamus anatomy and tractography-based medial lemniscus. Early postoperative clinical paresthesia mapping was performed by an independent pain nurse. Finally, we performed frequency and time-frequency analyses of the signals., Results: We observed differences of SEP amplitudes recorded along different directions in the VP. SEP amplitudes did not clearly correlate to both atlas-based anatomical position and fiber-tracking results of the medial lemniscus. However, the contacts of highest SEP amplitude correlated with the contacts of lowest effect-threshold to induce paraesthesia., Conclusions: SEP recordings from directional DBS leads offer additional information about the neurophysiological (re)organization of the sensory thalamus., Significance: Directional recordings of thalamic SEPs bear the potential to assist clinical decision-making in DBS for pain., Competing Interests: Conflict of interest None of the authors have potential conflicts of interest to be disclosed., (Copyright © 2023 International Federation of Clinical Neurophysiology. Published by Elsevier B.V. All rights reserved.)

Published
2023
Full Text
View/download PDF

109. Pinprick Evoked Potentials-Reliable Acquisition in Healthy Human Volunteers.

Author

Rosner J, Scheuren PS, Stalder SA, Curt A, and Hubli M

Subjects
Adult, Aged, Electroencephalography methods, Feasibility Studies, Female, Foot innervation, Hand innervation, Healthy Volunteers, Humans, Hyperalgesia diagnosis, Hyperalgesia physiopathology, Male, Middle Aged, Reproducibility of Results, Young Adult, Evoked Potentials, Somatosensory physiology, Physical Stimulation methods
Abstract

Objective: Pinprick evoked potentials (PEPs) represent a novel tool to assess the functional integrity of mechano-nociceptive pathways with a potential toward objectifying sensory deficits and gain seen in neurological disorders. The aim of the present study was to evaluate the feasibility and reliability of PEPs with respect to age, stimulation site, and skin type., Methods: Electroencephalographic responses evoked by two pinprick stimulation intensities (128 mN and 256 mN) applied at three sites (hand dorsum, palmar digit II, and foot dorsum) were recorded in 30 healthy individuals. Test-retest reliability was performed for the vertex negative-positive complex amplitudes, N-latencies, and pain ratings evoked by the 256mN stimulation intensity., Results: Feasibility of PEP acquisition was demonstrated across age groups, with higher proportions of evoked potentials (>85%) for the 256mN stimulation intensity. Reliability analyses, that is, Bland-Altman and intraclass correlation coefficients, revealed poor to excellent reliability upon retest depending on the stimulation sites., Conclusions: This study highlights the reliability of PEP acquisition from cervical and lumbar segments across clinically representative age groups. Future methodological improvements might further strengthen PEP reliability in order to complement clinical neurophysiology of sensory nerve fibers by a more specific assessment of mechano-nociceptive pathways. Beyond looking at sensory deficits, PEPs may also become applicable to revealing signs of central sensitization, complementing the clinical assessment of mechanical hyperalgesia., (© 2019 American Academy of Pain Medicine. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results