Further observations on the "primary" somesthetic response in man. Preliminary results
Abbruzzese, M.; Favale, E.; Ivaldi, M.; Leandri, M.; Ratto, S.
Bollettino della Societa Italiana di Biologia Sperimentale 55(11): 1084-1088
1979
ISSN/ISBN: 0037-8771 PMID: 549586 Document Number: 142780
In six normal subjects cerebral somatosensory potentials evoked by median nerve stimulation at the wrist have been recorded in order to assess whether N20 and P25 components can be related to a single generator dipole. It was found that, at variance with the current literature, such components are due to separate generator dipoles, possibly related to the activity of different cortical structures. Moreover an additional component, chronologically occurring between N20 and P25, was consistently observed.