Document Detail

Microfluctuations of steady-state accommodation and the cardiopulmonary system.
MedLine Citation:
PMID:  8594816     Owner:  NLM     Status:  MEDLINE    
The relationship between variations in steady-state accommodation (microfluctuations) and rhythmic cycles in cardiopulmonary system was investigated. As previously reported, vascular pulse frequency was consistently correlated with the high frequency component of steady-state accommodation microfluctuations. In a new finding, respiration rate and an associated cycle in the instantaneous pulse rate also showed a correlation with a low frequency component of the accommodation power spectra. This apparent coherence between respiration frequency and an accommodation low frequency component was maintained during rapid breathing and was evident at the expected frequency during regulated breathing patterns. This association may reflect the direct influence of the autonomic nervous system upon the ciliary muscle or may be caused by the modulation of intraocular pulse by the autonomic nervous system.
M Collins; B Davis; J Wood
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Vision research     Volume:  35     ISSN:  0042-6989     ISO Abbreviation:  Vision Res.     Publication Date:  1995 Sep 
Date Detail:
Created Date:  1996-04-11     Completed Date:  1996-04-11     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  2491-502     Citation Subset:  IM    
Centre for Eye Research, School of Optometry, Queensland University of Technology, Brisbane, Australia.
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MeSH Terms
Accommodation, Ocular / physiology*
Blinking / physiology
Carotid Artery, External
Eye Movements / physiology
Fixation, Ocular / physiology
Pulse / physiology*
Respiration / physiology*
Time Factors

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