PMID- 1280195
OWN - NLM
STAT- MEDLINE
DCOM- 19921230
LR  - 20190721
IS  - 0013-4694 (Print)
IS  - 0013-4694 (Linking)
VI  - 84
IP  - 6
DP  - 1992 Nov-Dec
TI  - The influence of interfering input from the peroneal nerve on tibial-nerve 
      somatosensory evoked potential.
PG  - 492-8
AB  - Using a conditioning-test paradigm, we studied the recovery function of tibial 
      nerve somatosensory evoked potentials (SEPs) conditioned by preceding peroneal 
      nerve stimulation. The inter-stimulus intervals (ISIs) ranged from 0 to 400 msec, 
      where 0 msec indicated simultaneous arrival of tibial and peroneal nerve volleys 
      at the L1 spine. The recovery curve was W-shaped, showing two peaks of SEP 
      suppression, maximum at 6 msec ISI (1st phase) and 50-75 ISI msec (2nd phase). In 
      the 1st phase suppression, we found distinct differences in wave forms between 
      0-2 msec ISI and 4-6 msec ISI. At 0-2 msec ISI, P40-N50-P60 amplitude decreased 
      and latencies shortened, while P31 and N35 were unchanged. At 4-6 msec ISI, all 
      peaks, possibly excluding P31, were markedly depressed. We attribute the former 
      change to an "occlusive effect" and the latter to an "inhibitory effect," each 
      mediated via a central synaptic network between the two nerves. The attenuation 
      of the 2nd but not the 1st phase suppression by peroneal nerve block distal to 
      the stimulating electrodes provided evidence that the 2nd phase suppression 
      resulted primarily from interfering afferent signals generated by peroneal nerve 
      peripheral receptors, activated by foot movement.
FAU - Yamada, T
AU  - Yamada T
AD  - Department of Neurology, University of Iowa, College of Medicine, Iowa City 
      52242.
FAU - Saito, T
AU  - Saito T
FAU - Matsue, Y
AU  - Matsue Y
FAU - Honda, Y
AU  - Honda Y
FAU - Fuchigami, T
AU  - Fuchigami T
FAU - Fujii, M
AU  - Fujii M
FAU - Ross, M
AU  - Ross M
LA  - eng
PT  - Journal Article
PL  - Ireland
TA  - Electroencephalogr Clin Neurophysiol
JT  - Electroencephalography and clinical neurophysiology
JID - 0375035
SB  - IM
MH  - Adult
MH  - Evoked Potentials, Somatosensory/*physiology
MH  - Humans
MH  - Male
MH  - Peroneal Nerve/*physiology
MH  - Tibial Nerve/*physiology
EDAT- 1992/11/01 00:00
MHDA- 1992/11/01 00:01
CRDT- 1992/11/01 00:00
PHST- 1992/11/01 00:00 [pubmed]
PHST- 1992/11/01 00:01 [medline]
PHST- 1992/11/01 00:00 [entrez]
AID - 10.1016/0168-5597(92)90038-d [doi]
PST - ppublish
SO  - Electroencephalogr Clin Neurophysiol. 1992 Nov-Dec;84(6):492-8. doi: 
      10.1016/0168-5597(92)90038-d.