Neural Signal Changes Associated with Cardiac and Respiratory Measures vs Boxcar Analysis in Functional Magnetic Resonance Imaging (fMRI)
Abstract
Functional magnetic resonance imaging (fMRI) was used to measure signal changes in the brain during a respiratory challenge that elevated blood pressure. Subjects were scanned during a baseline period and during a Valsalva maneuver. Results were compared using fixed-effects analysts with the SPM99 package, and examined once using a boxcar model and once by models generated from changes in cardiac and respiratory signals during the breathing challenge. Models based on physiological measures resulted in greater localization of signal changes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 25, 2001
- Accession Number
- ADA410246
Entities
People
- K. E. Macey
- L. A. Henderson
- M. A. Woo
- P. M. Macey
- R. C. Frysinger
Organizations
- University of California, Los Angeles