PMID- 6644614
OWN - NLM
STAT- MEDLINE
DCOM- 19840107
LR  - 20190511
IS  - 0022-3751 (Print)
IS  - 1469-7793 (Electronic)
IS  - 0022-3751 (Linking)
VI  - 343
DP  - 1983 Oct
TI  - The time course of synaptic potentials evoked in cat spinal motoneurones at 
      identified group Ia synapses.
PG  - 117-33
AB  - Excitatory post-synaptic potentials (e.p.s.p.s) were evoked in motoneurones by 
      impulses in single group Ia axons. After recording the e.p.s.p., the motoneurone 
      and the group Ia axon were injected with horseradish peroxidase. The 
      morphological details of the connexion formed by each group Ia axon with a 
      motoneurone were subsequently reconstructed. Four Ia axon-motoneurone pairs were 
      obtained. The electrotonic distance from the soma to each synaptic bouton in the 
      connexion was calculated. The electrotonic lengths of those dendrites on which 
      synaptic connexions were found were also calculated. The shape indices of each 
      recorded e.p.s.p. and the standard cable model of the motoneurone were used to 
      calculate the electrotonic distance from the soma to the point on the equivalent 
      dendritic cable at which the e.p.s.p. originated. This distance was compared with 
      the distance obtained from the reconstruction of the synaptic connexion at which 
      the e.p.s.p. was generated. For two of the four connexions, the locations 
      calculated by both methods agreed to within 0.1 lambda. Similar agreement could 
      only be obtained for the other two connexions if synaptic transmission did not 
      occur at some of the boutons in the termination. Evidence that some boutons were 
      not involved in transmission is presented in the following paper (Redman & 
      Walmsley, 1983).
FAU - Redman, S
AU  - Redman S
FAU - Walmsley, B
AU  - Walmsley B
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Physiol
JT  - The Journal of physiology
JID - 0266262
SB  - IM
MH  - Animals
MH  - Axons/physiology
MH  - Cats
MH  - Dendrites/physiology
MH  - *Evoked Potentials
MH  - Motor Neurons/cytology/*physiology
MH  - Spinal Nerves/physiology
MH  - Synapses/*physiology
MH  - Time Factors
PMC - PMC1193911
EDAT- 1983/10/01 00:00
MHDA- 1983/10/01 00:01
PMCR- 1983/10/01
CRDT- 1983/10/01 00:00
PHST- 1983/10/01 00:00 [pubmed]
PHST- 1983/10/01 00:01 [medline]
PHST- 1983/10/01 00:00 [entrez]
PHST- 1983/10/01 00:00 [pmc-release]
AID - 10.1113/jphysiol.1983.sp014884 [doi]
PST - ppublish
SO  - J Physiol. 1983 Oct;343:117-33. doi: 10.1113/jphysiol.1983.sp014884.