Biomaterial Database

Temporal differences in the detection of resistive and elastic loads to breathing. 1978

F W Zechman, and P W Davenport

Two series of experiments were conducted on 8 healthy subjects to test for temporal differences in the detection of added resistive and elastic loads. In one series of experiments, 5 resistive loads were presented for single inspirations for a total of 10 presentations each. Subjects pressed a signal marker as soon as possible if they detected the load. In the second series, 5 elastic loads were tested using the same protocol The detection time (Tdet) for threshold resistive loads (deltaR50) occurred in mid-inspiration near Vmax whereas the Tdet for threshold D loads (delta E50) occurred near the end of inspiration. The differences in the detection times were significant (P less than 0.001). With suprathreshold loads, detection times progressively decreased reaching a minimum value with total occlusion. These results demonstrate unique temporal differences in the patterns of sensory information generated by added resistive and elastic loads and suggest that the intensity of the information is flow dependent for resistive loads and volume dependent for elastic loads.

UI	MeSH Term	Description	Entries
D008170	Lung Compliance	The capability of the LUNGS to distend under pressure as measured by pulmonary volume change per unit pressure change. While not a complete description of the pressure-volume properties of the lung, it is nevertheless useful in practice as a measure of the comparative stiffness of the lung. (From Best & Taylor's Physiological Basis of Medical Practice, 12th ed, p562)	Compliance, Lung,Compliances, Lung,Lung Compliances
D008176	Lung Volume Measurements	Measurement of the amount of air that the lungs may contain at various points in the respiratory cycle.	Lung Capacities,Lung Volumes,Capacity, Lung,Lung Capacity,Lung Volume,Lung Volume Measurement,Measurement, Lung Volume,Volume, Lung
D008297	Male		Males
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000403	Airway Resistance	Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving pressure to the rate of air flow.	Airway Resistances,Resistance, Airway,Resistances, Airway
D012684	Sensory Thresholds	The minimum amount of stimulus energy necessary to elicit a sensory response.	Sensory Threshold,Threshold, Sensory,Thresholds, Sensory
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor