PMID- 17988910
OWN - NLM
STAT- MEDLINE
DCOM- 20080306
LR  - 20071217
IS  - 1531-4332 (Electronic)
IS  - 1095-6433 (Linking)
VI  - 149
IP  - 1
DP  - 2008 Jan
TI  - Autonomic mediation in the interdependences between cardiocortical activity time 
      variations and between cardiorespiratory activity time variations in the lizard, 
      Gallotia galloti.
PG  - 11-9
AB  - Multivariate nonlinear analysis methods were applied to variability time series 
      extracted from electrocardiographic, electrocorticographic and respiratory 
      activities of Gallotia galloti lizards, to study interdependences between 
      cardio-cortical activity time variations, and between cardio-respiratory activity 
      time variations. Autonomic nervous system involvement in the mediation of such 
      interdependences was investigated through pharmacological blockade. Cardiac 
      variability was evaluated from the R-R intervals of the electrocardiogram (RRIv). 
      Cortical (CORTv) and respiratory (RESPv) activity time variations were evaluated 
      from power-data signals derived from both electrocorticogram and respiratory 
      signal segments obtained within each R-R interval, respectively. A nonlinear 
      index N to measure interdependence between the signals, and a surrogate data test 
      to measure the significance and nature of the interdependences were used. A 
      nonlinear dependence of RRIv vs. CORTv and of RRIv vs. RESPv was found. Both 
      dependences seem to be unconnected with the functioning of both 
      alpha(1)-adrenoceptor and cholinoceptor systems, but appear to be mediated by 
      beta-adrenoceptor mechanisms. A linear dependence of CORTv vs. RRIv and of RESPv 
      vs. RRIv was also found. Both dependences seem to be unconnected with the 
      operation of alpha(1)-adrenoceptor, beta-adrenoceptor and cholinoceptor systems. 
      It is suggested that both the cardiocortical and cardiorespiratory 
      synchronizations studied seem to be mediated by beta-adrenoceptor mechanisms.
FAU - De Vera, Luis
AU  - De Vera L
AD  - Laboratory of Biophysics, Department of Physiology, Faculty of Medicine, 
      University of La Laguna, 38071-La Laguna, Tenerife, Canary Islands, Spain. 
      lvera@ull.es
FAU - Santana, Alejandro
AU  - Santana A
FAU - Pereda, Ernesto
AU  - Pereda E
FAU - Gonzalez, Julian J
AU  - Gonzalez JJ
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20071005
PL  - United States
TA  - Comp Biochem Physiol A Mol Integr Physiol
JT  - Comparative biochemistry and physiology. Part A, Molecular & integrative 
      physiology
JID - 9806096
SB  - IM
MH  - Animals
MH  - Electrocardiography
MH  - Heart/*physiology
MH  - Lizards/*physiology
MH  - *Respiration
MH  - Time Factors
EDAT- 2007/11/09 09:00
MHDA- 2008/03/07 09:00
CRDT- 2007/11/09 09:00
PHST- 2007/07/24 00:00 [received]
PHST- 2007/09/21 00:00 [revised]
PHST- 2007/09/21 00:00 [accepted]
PHST- 2007/11/09 09:00 [pubmed]
PHST- 2008/03/07 09:00 [medline]
PHST- 2007/11/09 09:00 [entrez]
AID - S1095-6433(07)01607-8 [pii]
AID - 10.1016/j.cbpa.2007.09.012 [doi]
PST - ppublish
SO  - Comp Biochem Physiol A Mol Integr Physiol. 2008 Jan;149(1):11-9. doi: 
      10.1016/j.cbpa.2007.09.012. Epub 2007 Oct 5.