Linked Life Data

447027

Source:http://linkedlifedata.com/resource/pubmed/id/447027

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1979-9-1
pubmed:abstractText
"Spontaneous" tertiary esophageal contractions occur in a high proportion of healthy subjects. This study was carried out to investigate whether such contractions can be elicited by acoustical stimuli, to determine the threshold intensity at which contractions occur, and to find out how many of a sequence of equiintense tones at such a threshold intensity evoke contractile responses. Esophageal pressures were recorded 5, 10, and 15 cm above the lower esophageal sphincter, and swallowing was recorded by an electromyogram of the mylo-hyoid muscles. The results are summarized as follows: (a) All of 22 subjects exposed to 1000 Hz tones of intensities between 70 and 125 dBA responded with teritary contractions; their mean threshold intensity was 86.8 dBA +/- 3.0 SEM. Intensities that were 5 to 20 dBA higher were necessary to evoke contractions also in response to a second tone of a given intensity. (b) In 36 to 40 subjects exposed to 40 1000 Hz, 90 dBA tones tertiary contractions occurred in response to 47.2% of stimuli presented. (c) On repetitive stimulation, there was a significant decrease in number and amplitude of esophageal responses with an increasing number of stimuli. It is concluded that the esophagus takes part in the response system of the healthy organism to environmental stimuli.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0016-5085
pubmed:author
pubmed:issnType
Print
pubmed:volume
77
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
49-54
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1979
pubmed:articleTitle
Tertiary esophageal contractions evoked by acoustical stimuli.
pubmed:publicationType
Journal Article