0000000000154093
AUTHOR
J. Koehler
showing 4 related works from this author
Correlation of cognition and FDG-PET findings in early multiple sclerosis
2007
Introduction: Patients with multiple sclerosis (MS), disease history of 11.5 years, an expanded disability status scale (EDSS) up to 6.0 and an involvement of verbal and/or spatial and long-term memory showed a bilateral reduction of glucose metabolism in the cingulate gyrus, thalamus, associative occipital cortex and cerebellum. To our knowledge no similar studies in early stages of MS are reported. Therefore we stressed the question of possible correlation of quality of life, objective cognitive impairment and FDG-PET findings in newly diagnosed definite MS according to McDonald criteria. Methods: In 11 patients (f=4, m=7, mean age: 35 years (CI 25–42), IQ 112 (CI 97–118)) with newly diag…
EDSS correlated analysis of median nerve somatosensory evoked potentials in multiple sclerosis
2001
Median nerve somatosensory evoked potentials (SEP) were recorded in 30 patients with multiple sclerosis. The examined patients had an expanded disability status scale (EDSS) between 0 and 6. The primary cortical potential N20, the subcortical potentials P14, N13b, N13a and the peripheral potential P9 were recorded simultaneously. In 5 patients normal SEP were observed (group 1), and in 6 patients there were consecutive disturbances of the somatosensory pathway (group 3). In 19 patients subcortical potentials were abnormal or absent while the following potentials were normal or identified which pattern corresponds to amplification within CNS structures (group 2). The EDSS of groups 1 and 2 w…
Latency and amplitude variability in serial median nerve SEP recordings
1999
Abstract Objectives : Intra-individual variability of SEP parameters was investigated by serial SEP recordings. Methods : Median nerve SEP of 53 normal subjects (mean age 25.5±2.7 years) were evaluated. Recordings were repeated 1 week, 2 weeks, and 6 months after the initial recording. Results : Mean values of latencies from right median nerve stimulation were slightly longer (+0.1 ms) as compared to the left. The intra-individual (within stimulation side) variance did not depend on the time interval between recordings. The total within-stimulation-side variance of latencies was 0.056 ms 2 for N20 (C 3/4 ′ vs. F z ), 0.070 ms 2 for N13 (C 7 vs. F z ), 0.048 ms 2 for N10 (Erb's point vs. F z…
Construction, assembly and tests of the ATLAS electromagnetic barrel calorimeter
2006
The construction and assembly of the two half barrels of the ATLAS central electromagnetic calorimeter and their insertion into the barrel cryostat are described. The results of the qualification tests of the calorimeter before installation in the LHC ATLAS pit are given.