Nasal Cycle in Children

1984 ◽  
Vol 110 (2) ◽  
pp. 108-110 ◽  
Author(s):  
P. B. Van Cauwenberge ◽  
L. Deleye
Keyword(s):  
Nasal Cycle

scholarly journals Effect of the External Nasal Dilator Breathe Right and Nasal Cycle Influence

2005 ◽  
Vol 108 (11) ◽  
pp. 1091-1100 ◽  
Author(s):  
Hiroyoshi Yoshinami ◽  
Hideki Takegoshi ◽  
Shigeru Kikuchi ◽  
Toshitaka Iinuma
Keyword(s):  
Nasal Cycle

Ultradian rhythms of autonomic, cardiovascular, and neuroendocrine systems are related in humans

1996 ◽  
Vol 270 (4) ◽  
pp. R873-R887 ◽  
Author(s):  
D. S. Shannahoff-Khalsa ◽  
B. Kennedy ◽  
F. E. Yates ◽  
M. G. Ziegler
Keyword(s):  
Spectral Power ◽  
Correlation Coefficients ◽  
Autonomic Tone ◽  
Ejection Time ◽  
Index Stroke Volume ◽  
Nasal Cycle ◽  
Index Stroke ◽  
Fast Orthogonal Search ◽  
Time Averages ◽  
Ventricular Ejection Time

Autonomic, cardiovascular, and neuroendocrine activities were monitored for 5-6 h in 10 normal adult resting humans (8 males, 2 females). The nasal cycle, a measure of lateralized autonomic tone, was measured at 4 Hz. Impedance cardiography (BoMed NCCOM3) was used to measure cardiac output, thoracic fluid index, heart rate, ejection velocity index, stroke volume, and ventricular ejection time (averages of 12 heart beats). Systolic, diastolic, and mean arterial pressures were measured with an automated cuff at 7.5-min intervals. Separate blood samples were taken every 7.5 min simultaneously from both arms with the use of indwelling venous catheters. Assays for adrenocorticotropic hormone, luteinizing hormone, norepinephrine, epinephrine, and dopamine were performed on samples from each arm. Time-series analysis, using the fast orthogonal search method of Korenberg, was used to detect variance structure. Significant spectral periods were observed in five windows at 220-340, 170-215, 115-145, 70-100, and 40-65 min. The greatest spectral power was observed in the lower frequencies, but periods at 115-145, 70-100, and 40-65 min were common across variables. Significant correlation coefficients for linear regressions of all paired variables in each subject were observed in 38.87% of the comparisons (subject range, 18.05-48-9.70%) with r > 0.30. These results suggest that either a common oscillator (the hypothalamus) or mutually entrained oscillators regulate these systems.

Rhinometric Measurements for Determination of the Nasal Cycle

1953 ◽  
Vol 43 (sup109) ◽  
pp. 159-175 ◽  
Author(s):  
Poul Stoksted
Keyword(s):  
Nasal Cycle

Stabilizing Effect of Yawning on Nasal Cycle

2020 ◽  
pp. 1-3
Keyword(s):  
Left Nostril ◽  
The Third ◽  
Nasal Cycle ◽  
Air Resistance ◽  
Second Mode ◽  
Stabilizing Effect ◽  
The Right ◽  
Fourth Mode

The dominant passability of the left or right nostril in terms of nasal air resistance can be classified into 4 main modes. In the first mode, both nostrils are closed and have equal and low air passability. In the second mode, the passability of the right nostril is higher than the left. In the third mode, the passability of the left nostril is higher than the right. In the fourth mode, both nostrils are open and passability of nostrils is equal and high. The first and fourth modes are unstable (with duration- minutes). The second and third modes are stable (with duration-hours). Author presents a yawning as physiological reflex leading to transition from unstable to stable modes.

P.1.b.006 Nasal cycle difference in schizophrenia: can it reflect the cerebral lateralization abnormality?

2008 ◽  
Vol 18 ◽  
pp. S220
Author(s):  
D. Senol ◽  
E. Ozan ◽  
S. Tanisman ◽  
N. Aydin ◽  
I. Kirpinar
Keyword(s):  
Cerebral Lateralization ◽  
Nasal Cycle

A Comparison of the Nasal Cross-Sectional Areas and Volumes Obtained with Acoustic Rhinometry and Magnetic Resonance Imaging

1997 ◽  
Vol 117 (4) ◽  
pp. 349-354 ◽  
Author(s):  
Jacquelynne P. Corey ◽  
Anil Gungor ◽  
Robert Nelson ◽  
Jeff Fredberg ◽  
Vincent Lai
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Nasal Cavity ◽  
Acoustic Rhinometry ◽  
Resonance Imaging ◽  
Cross Sectional ◽  
Nasal Tip ◽  
Nasal Cycle ◽  
Volume Measurements ◽  
Mri Measurements

Acoustic rhinometry (AR) evaluates the geometry of the nasal cavity with acoustic reflections and provides information about nasal cross-sectional areas (CSA) and nasal volume within a given distance. The accuracy of the information obtained by AR was compared with that of magnetic resonance imaging (MRI) of the nasal cavity. Five healthy subjects were evaluated with AR and the MRI before and after the application of a long-acting nasal decongestant spray, to eliminate possible interference of the nasal cycle with both measurement techniques. The MRI images of 2 mm coronal sections of the nasal cavity were traced by three independent observers and the CSAs were calculated by computer-aided imaging digitization, to be compared with the calculated CSAs obtained with the AR at the corresponding distance from the nasal tip. Digitized data from the MRI images were also used to calculate the nasal volume within the first 6 cm from the nasal tip and compared with the AR volume measurements. The interobserver variation of digitized MRI data predecongestant and postdecongestant was not significant. The correlations of CSA and volume measurements between the AR and MRI were high (0.969) after the application of the decongestant. The correlation between the AR and MRI measurements before the decongestant was low (0.345). This may have been the result of interference of the nasal cycle during the long MRI measurements (1 hour) or other unknown factors. We conclude that AR measurements of nasal CSAs and volumes provide accurate information when compared with the MRI of the decongested nasal airway.

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