PMID- 6332227
OWN - NLM
STAT- MEDLINE
DCOM- 19841015
LR  - 20190829
IS  - 0021-521X (Print)
IS  - 0021-521X (Linking)
VI  - 34
IP  - 2
DP  - 1984
TI  - Discharge patterns of the slowly adapting mechanoreceptor afferent units 
      innervating the non-warty skin of the frog.
PG  - 255-67
AB  - Discharge patterns of slowly adapting (SA) mechanoreceptor afferent units 
      innervating the non-warty skin of frogs, were analyzed statistically. Because SA 
      units in the frog did not always produce sustained discharges for a long period, 
      analysis was carried out on ensembles of interspike intervals (ISIs) obtained in 
      two ways: (1) a series of successive ISIs obtained in the quasi-stationary state 
      of maintained discharges and (2) an ensemble of ISIs (X(1),X(2),..., X(50)), 
      obtained on repeated trials of stimulation at about 1,000 msec following the 
      onset of stimulation. In some units these two types of ensembles of ISIs were 
      collected. Statistical analysis of a series of successive ISIs in the 
      quasi-stationary state disclosed two kinds of discharge patterns, irregular and 
      regular, corresponding to those of the SA cutaneous units of mammals and 
      reptiles. We named these two types of units Frog type I and Frog type II (Ft I 
      and Ft II) units, respectively. In addition, the quantitative study of an 
      ensemble of ISIs in the non-stationary state revealed that Ft II units discharged 
      regularly in response to an optimum range of indentation but irregularly to 
      indentation outside this range, although Ft I units produced irregular discharges 
      irrespective of the magnitude of indentation applied.
FAU - Ogawa, H
AU  - Ogawa H
FAU - Yamashita, Y
AU  - Yamashita Y
FAU - Nomura, T
AU  - Nomura T
FAU - Taniguchi, K
AU  - Taniguchi K
LA  - eng
PT  - Journal Article
PL  - Japan
TA  - Jpn J Physiol
JT  - The Japanese journal of physiology
JID - 2985184R
SB  - IM
MH  - *Adaptation, Physiological
MH  - Animals
MH  - Electrophysiology
MH  - Female
MH  - Male
MH  - Mechanoreceptors/*physiology
MH  - Neural Conduction
MH  - Neurons, Afferent/*physiology
MH  - Physical Stimulation
MH  - Rana catesbeiana
MH  - Skin/*innervation
MH  - Time Factors
MH  - Toes
EDAT- 1984/01/01 00:00
MHDA- 1984/01/01 00:01
CRDT- 1984/01/01 00:00
PHST- 1984/01/01 00:00 [pubmed]
PHST- 1984/01/01 00:01 [medline]
PHST- 1984/01/01 00:00 [entrez]
AID - 10.2170/jjphysiol.34.255 [doi]
PST - ppublish
SO  - Jpn J Physiol. 1984;34(2):255-67. doi: 10.2170/jjphysiol.34.255.