| Behavioral changes in fetal sheep caused by vibroacoustic stimulation: the effects of cochlear ablation. | |
| | |
MedLine Citation:
|
PMID: 2035577 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We measured the effects of 2 minutes of vibroacoustic stimulation on the activity of unanesthetized fetal sheep in utero. We were unable to detect any changes in activity after stimulation with a model 5C electrolarynx. With more powerful stimulation using a mechanical oscillator, fetal electrocortical activity desynchronized. Fetal breathing and eye movements changed with electrocortical activity and there was an increase in nuchal muscle activity. Stimulation caused a small decrease in fetal heart rate. Responses to stimulation were not seen in four of the five fetuses with bilateral cochlear ablation. These results indicate that in fetal sheep the auditory apparatus is necessary for the detection of vibroacoustic stimuli. The difference in responsiveness of the sheep and human fetus appears to be because of a difference in central processing after detection of the stimulus. |
| | |
Authors:
|
M J Parkes; P J Moore; D R Moore; N M Fisk; M A Hanson |
Related Documents
:
|
1625587 - An evaluation of the importance of formal, maternal fetal movement counting as a measur... 3901767 - Computer-assisted assessment of the fetal biophysical profile. 3309287 - Fetal biophysical testing. the effects of prolonged maternal fasting and the oral gluco... 8116727 - Clinical experience with the hewlett-packard m-1350a fetal monitor: correlation of dopp... 18324327 - Autoimmune inflammatory myopathy in pregnancy. 12116247 - Predicting the risk of cystic fibrosis with abnormal ultrasound signs of fetal bowel: r... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: American journal of obstetrics and gynecology Volume: 164 ISSN: 0002-9378 ISO Abbreviation: Am. J. Obstet. Gynecol. Publication Date: 1991 May |
Date Detail:
|
Created Date: 1991-06-21 Completed Date: 1991-06-21 Revised Date: 2010-08-25 |
Medline Journal Info:
|
Nlm Unique ID: 0370476 Medline TA: Am J Obstet Gynecol Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 1336-43 Citation Subset: AIM; IM |
Affiliation:
|
Department of Physiology and Biochemistry, University of Reading, England. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Acoustic Stimulation* Animals Behavior, Animal* Cochlea / physiology* Electrophysiology Eye Movements Fetus* Heart Rate Motor Activity Respiration Sheep |
| Grant Support | |
ID/Acronym/Agency:
|
//Wellcome Trust |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Endothelin and neuropeptide Y are vasoconstrictors in human uterine blood vessels.
Next Document: Magnesium sulfate-induced relaxation of uterine arteries from pregnant and nonpregnant patients.