Document Detail

The presence of coherence in sympathetic and phrenic activities in a developing mammal.
MedLine Citation:
PMID:  8787165     Owner:  NLM     Status:  MEDLINE    
To determine whether are development changes in the baroreceptor and central respiratory modulation of sympathetic activity, we used ordinary and partial coherence spectral analyses on cervical and splanchnic sympathetic activity in swine 1-36 days old. Removal of baroreceptor influences from cervical sympathetic and splanchnic spectra using partialization shows that 3-6 Hz peaks are due to baroreceptors since coherence decreased in > 19 days old while remaining unchanged in < 2 weeks old piglets. The 8-12 Hz band (present in normal coherence after 21 days) was revealed in piglets < 14 days old after removal of respiratory modulation by partialization; similarly increased coherence was also observed in the 16-18 Hz band through 3 weeks. Thus, use of partial power and coherency is a useful tool for unmasking the complex relationship found in developing SYMP outflows. These results suggest that there is a period of reorganization within the SYMP rhythm generating circuits, which may be essential for normal development.
P M Gootman; B W Hundley; A L Sica
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Acta neurobiologiae experimentalis     Volume:  56     ISSN:  0065-1400     ISO Abbreviation:  Acta Neurobiol Exp (Wars)     Publication Date:  1996  
Date Detail:
Created Date:  1996-09-23     Completed Date:  1996-09-23     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  1246675     Medline TA:  Acta Neurobiol Exp (Wars)     Country:  POLAND    
Other Details:
Languages:  eng     Pagination:  137-45     Citation Subset:  IM    
Department of Physiology, State University of New York-Health Science Center at Brooklyn 11203-2098, USA.
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MeSH Terms
Animals, Newborn
Phrenic Nerve / physiology*
Sympathetic Nervous System / physiology*
Grant Support

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