1. Copyright © American Speech-Language-Hearing Association
From: Breathing Patterns During Spontaneous Speech
J Speech Hear Res. 1995;38(1): doi: /jshr
Legend:
Relative rib cage (vertical axis) and abdominal contributions (horizontal axis) to the volume signal during speech expirations. Each plot depicts a single speech expiration from the subjects’ monologues. (A) The circle schematics Indicate the categories used (Hixon et al., 1988) in describing the slopes of the expiratory tracings. If an expiration is initiated at the center of the circle, the resultant tracing will fall Into one of the numbered segments. The tracing in Category 2 Illustrates the predominance of abdominal expiratory movement over rib cage; Category 3 depicts predominantly rib cage expiratory movement relative to abdominal; Category 4 shows predominantly rib cage expiratory movement with abdominal Inspiratory movement. No examples of Category 1 from Hixon et al. (1988; rib cage paradoxing) were observed in the study. The example in (B) shows a sequential pattern of rib cage and abdominal predominance to the expiratory tracing. Although the longest portion of this tracing falls Into Category 2 (predominantly abdominal expiratory movement), it was Initiated with predominantly rib cage movement.
Date of download: 12/29/2017
Copyright © American Speech-Language-Hearing Association