title: Recovery functions of early cortical median nerve SSEP components: normative data.
abstract: The recovery functions of parietal P14-N20, N20-P27 and frontal P22-N30 amplitudes were assessed in 17 healthy controls aged 20-50 years by means of the paired stimulus technique. One unpaired and 4 paired stimuli with interstimulus intervals (ISIs) of 25, 50, 75 and 100 msec were cyclically presented in a single run. Responses to the unpaired stimulus were subtracted off-line from paired stimulus responses. The highest suppression was reached at shorter ISIs for components with shorter latencies. The mean suppression of P22-N30 was influenced by the subject's age, being greater in younger subjects. Normative data are reported.
authors.affiliation: Fondazione, Istituto Neurologico C. Mondino, Pavia, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Romani
authors.forename: R
authors.initials: R
authors.lastname: Bergamaschi
authors.forename: M
authors.initials: M
authors.lastname: Versino
authors.forename: R
authors.initials: R
authors.lastname: Callieco
authors.forename: G
authors.initials: G
authors.lastname: Calabrese
authors.forename: V
authors.initials: V
authors.lastname: Cosi
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D004569:Electroencephalography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008475:Median Nerve / Q000502:physiology*; D008875:Middle Aged; D012016:Reference Values