PMID- 11682814
OWN - NLM
STAT- MEDLINE
DCOM- 20020205
LR  - 20191105
IS  - 0009-9155 (Print)
IS  - 0009-9155 (Linking)
VI  - 32
IP  - 4
DP  - 2001 Oct
TI  - The interaction of somatosensory evoked potentials between mixed-sensory nerves 
      and sensory-sensory nerves.
PG  - 197-204
AB  - The interactions between two different nerves occur by occlusion or inhibition 
      when two nerves share the synaptic connections. In our previous study, we have 
      demonstrated that posterior tibial nerve and peroneal nerve sensory inputs 
      interact with each other, i.e., preceding stimulus to one nerve suppresses the 
      somatosensory evoked potential (SEP) of the other nerve when two stimuli are 
      delivered in close sequence. The course of suppression follows two phases; the 
      first one occurring at short interstimulus intervals (ISIs) of the two nerves 
      less than 10 msec, and the second one being at around 30 msec ISI after partial 
      recovery following the first suppression phase. In that study, we have postulated 
      that the second phase suppression was equivalent for the movement induced 
      "gating" mechanism. In this study, the interactions of mixed nerve (posterior 
      tibial) and sensory nerve (sural), and also sensory (sural) and sensory 
      (saphenous) nerves were examined. We found that the mixed nerve (posterior 
      tibial) exerted similar dual phases of suppression (as was seen in posterior 
      tibial--peroneal nerve study) on to the sural nerve SEP, but the reverse was not 
      true. Also the sensory and sensory nerve interactions were not mutually equal; 
      the sural nerve stimulation caused two phases suppression but the reverse 
      condition did not show significant suppression. The above findings suggest (1) 
      interference input from the sensory nerve to the mixed nerve is much weaker than 
      the reverse condition, and (2) sensory and sensory nerves interactions occur but 
      two nerves' interference inputs are not necessarily equal and one could dominant 
      the other.
FAU - Hasegawa, A
AU  - Hasegawa A
AD  - Division of Clinical Electrophysiology, Department of Neurology, University of 
      Iowa College of Medicine, Iowa City, IA 52242, USA.
FAU - Yamada, T
AU  - Yamada T
FAU - Saito, T
AU  - Saito T
FAU - Fuchigami, T
AU  - Fuchigami T
FAU - Onishi, H
AU  - Onishi H
FAU - Fujii, M
AU  - Fujii M
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Clin Electroencephalogr
JT  - Clinical EEG (electroencephalography)
JID - 0236454
SB  - IM
MH  - Adult
MH  - Electroencephalography
MH  - *Evoked Potentials, Somatosensory
MH  - Female
MH  - Humans
MH  - Male
MH  - Neurons, Afferent/physiology
MH  - Sural Nerve/*physiology
MH  - Tibial Nerve/*physiology
EDAT- 2001/10/31 10:00
MHDA- 2002/02/06 10:01
CRDT- 2001/10/31 10:00
PHST- 2001/10/31 10:00 [pubmed]
PHST- 2002/02/06 10:01 [medline]
PHST- 2001/10/31 10:00 [entrez]
AID - 10.1177/155005940103200407 [doi]
PST - ppublish
SO  - Clin Electroencephalogr. 2001 Oct;32(4):197-204. doi: 10.1177/155005940103200407.