PMID- 6279826
OWN - NLM
STAT- MEDLINE
DCOM- 19820621
LR  - 20190511
IS  - 0022-3751 (Print)
IS  - 1469-7793 (Electronic)
IS  - 0022-3751 (Linking)
VI  - 321
DP  - 1981 Dec
TI  - The components of synaptic potentials evoked in cat spinal motoneurones by 
      impulses in single group Ia afferents.
PG  - 65-96
AB  - 1. Excitatory post-synaptic potentials (e.p.s.p.s) were evoked in cat spinal 
      motoneurones by impulses in single group Ia afferent fibres. The probability 
      density of the fluctuations in peak amplitude of each e.p.s.p. was calculated 
      from the recorded peak amplitude and the probability density of the recording 
      noise. 2. Most e.p.s.p.s fluctuated between different components (i.e. individual 
      e.p.s.p.s of a particular discrete amplitude) with peak amplitudes which were 
      integer multiples of the increment between successive components. The average 
      peak amplitude of this incremental e.p.s.p. was about 90 microV for e.p.s.p.s 
      generated at or near the soma. 3. In general, the probability density of the peak 
      amplitude could not be described using Poisson or binomial distributions. 4. For 
      many e.p.s.p.s the complete time course of each component could be calculated. 
      There was no variability in the amplitude of these components nor in their 
      latency of onset. For some e.p.s.p.s there were differences in the latency and 
      time course of the components. 5. The increments between successive components of 
      e.p.s.p. generated proximally were no larger (at the soma) than the corresponding 
      increments for e.p.s.p.s generated at more distal dendritic sites. 6. These 
      results and those from subsequent papers (Jack, Redman & Wong, 1981; Hirst, 
      Redman & Wong, 1981) reinforce earlier suggestions that each bouton behaves in an 
      all-or-nothing manner with respect to post-synaptic effect, and the probability 
      of failure varies at different boutons arising from the same afferent.
FAU - Jack, J J
AU  - Jack JJ
FAU - Redman, S J
AU  - Redman SJ
FAU - Wong, K
AU  - Wong K
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  - Cats
MH  - Evoked Potentials
MH  - Kinetics
MH  - Motor Neurons/*physiology
MH  - Neurons, Afferent/*physiology
MH  - Probability
MH  - Spinal Cord/*physiology
MH  - Synapses/*physiology
MH  - Synaptic Transmission
MH  - Time Factors
PMC - PMC1249614
EDAT- 1981/12/01 00:00
MHDA- 1981/12/01 00:01
PMCR- 1981/12/01
CRDT- 1981/12/01 00:00
PHST- 1981/12/01 00:00 [pubmed]
PHST- 1981/12/01 00:01 [medline]
PHST- 1981/12/01 00:00 [entrez]
PHST- 1981/12/01 00:00 [pmc-release]
AID - 10.1113/jphysiol.1981.sp013972 [doi]
PST - ppublish
SO  - J Physiol. 1981 Dec;321:65-96. doi: 10.1113/jphysiol.1981.sp013972.