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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener">http://doi.org/</a>
Pages
E324-E325
Volume
61
ISSN
1540-7063
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Title
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Heterogeneity of variance partitioning between kinematics and electromyography (EMG) of swallowing following nerve lesion in pigs
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Integrative And Comparative Biology
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2021
2021-03
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Gould FDH; Lammers AR; Mayerl CM; German RZ
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener"></a>
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journalArticle
2021
Department of Anatomy & Neurobiology
German RZ
Gould FDH
Integrative and comparative biology
journalArticle
July 2021 List
Lammers AR
Mayerl CM
NEOMED College of Medicine
NEOMED Postdoc Publications
-
Text
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener">http://doi.org/</a>
Pages
E5-E5
Volume
61
ISSN
1540-7063
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Title
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How do different feeding delivery parameters affect swallowing behavior in infant pigs?
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Integrative And Comparative Biology
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2021
2021-03
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Adjerid K; Mayerl CJ; Gould FDH; Edmonds CE; Steer KE; Bond LE; German RZ
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener"></a>
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journalArticle
2021
Adjerid K
Bond LE
Department of Anatomy & Neurobiology
Edmonds CE
German RZ
Gould FDH
Integrative and comparative biology
journalArticle
July 2021 List
Mayerl CJ
NEOMED College of Medicine
NEOMED College of Medicine Postdoc
NEOMED Postdoc Publications
Steer KE
-
Text
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener">http://doi.org/</a>
Pages
E221-E222
Volume
61
ISSN
1540-7063
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Capsaicin improves swallow safety during infant feeding
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Integrative And Comparative Biology
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2021
2021-03
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Edmonds CE; German RZ; Gould FDH; Steer KE; Adjerid K; Bond LE; Mayerl CJ
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener"></a>
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journalArticle
2021
Adjerid K
Bond LE
Department of Anatomy & Neurobiology
Edmonds CE
German RZ
Gould FDH
Integrative and comparative biology
journalArticle
July 2021 List
Mayerl CJ
NEOMED College of Medicine
NEOMED Postdoc Publications
Steer KE
-
Text
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener">http://doi.org/</a>
Pages
E587-E588
Volume
61
ISSN
1540-7063
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Hyoid movements are correlated with contractile patterns of the hyoid musculature during infant feeding
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Integrative And Comparative Biology
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2021
2021-03
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Mayerl CJ; Steer KE; Chava AM; Bond LE; Edmonds CE; Gould FDH; Stricklen BM; Hieronymous TL; Vinyard CJ; German RZ
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener"></a>
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journalArticle
2021
Bond LE
Chava AM
Department of Anatomy & Neurobiology
Edmonds CE
German RZ
Gould FDH
Hieronymous TL
Integrative and comparative biology
journalArticle
July 2021 List
Mayerl CJ
NEOMED College of Medicine
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Steer KE
Stricklen BM
Vinyard CJ
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Text
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener">http://doi.org/</a>
Pages
E1268-E1268
Volume
61
ISSN
1540-7063
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Title
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The impact of automated milk delivery on infant feeding performance
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Integrative And Comparative Biology
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2021
2021-03
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Steer KE; Edmonds CE; Gould FDH; Adjerid K; Bond LE; German RZ; Mayerl CJ
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<a href="http://doi.org/" target="_blank" rel="noreferrer noopener"></a>
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journalArticle
2021
Adjerid K
Bond LE
Department of Anatomy & Neurobiology
Edmonds CE
German RZ
Gould FDH
Integrative and comparative biology
journalArticle
July 2021 List
Mayerl CJ
NEOMED College of Medicine
NEOMED College of Medicine Postdoc
NEOMED Postdoc Publications
Steer KE
-
Text
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<a href="http://doi.org/10.1111/jtxs.12599" target="_blank" rel="noreferrer noopener">http://doi.org/10.1111/jtxs.12599</a>
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1745-4603 0022-4901
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Title
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Increased viscosity of milk during infant feeding improves swallow safety through modifying sucking in an animal model.
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Journal Of Texture Studies
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2021
2021-03-30
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physiology; dysphagia; infant; animal model; suckling; viscosity
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Mayerl CJ; Edmonds CE; Gould FDH; German RZ
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Infants experiencing frequent aspiration, the entry of milk into the airway, are often prescribed thickened fluids to improve swallow safety. However, research on the outcomes of thickened milk on infant feeding have been limited to documenting rates of aspiration and the rheologic properties of milk following thickening. As a result, we have little insight into the physiologic and behavioral mechanisms driving differences in performance during feeding on high viscosity milk. Understanding the physiologic and behavioral mechanisms driving variation in performance at different viscosities is especially critical, because the structures involved in feeding respond differently to sensory stimulation. We used infant pigs, a validated animal model for infant feeding, to test how the tongue, soft palate, and hyoid respond to changes in viscosity during sucking and swallowing, in addition to measuring swallow safety and bolus size. We found that the tongue exhibited substantive changes in its movements associated with thickened fluids during sucking and swallowing, but that pharyngeal transit time as well as hyoid and soft palate movements during swallowing were unaffected. This work demonstrates the integrated nature of infant feeding and that behaviors associated with sucking are more sensitive to sensorimotor feedback associated with changes in milk viscosity than those associated with the pharyngeal swallow, likely due to its reflexive nature.
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<a href="http://doi.org/10.1111/jtxs.12599" target="_blank" rel="noreferrer noopener">10.1111/jtxs.12599</a>
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journalArticle
2021
Animal model
April 2021 List
Department of Anatomy & Neurobiology
Dysphagia
Edmonds CE
German RZ
Gould FDH
Infant
Journal of Texture Studies
journalArticle
Mayerl CJ
NEOMED College of Medicine
NEOMED Postdoc Publications
Physiology
suckling
Viscosity
-
Text
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<a href="http://doi.org/10.1098/rspb.2021.0052" target="_blank" rel="noreferrer noopener">http://doi.org/10.1098/rspb.2021.0052</a>
Pages
20210052
Issue
1946
Volume
288
ISSN
1471-2954 0962-8452
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Title
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The contractile patterns, anatomy and physiology of the hyoid musculature change longitudinally through infancy.
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Proceedings of the Royal Society B. Biological Sciences
Date
A point or period of time associated with an event in the lifecycle of the resource
2021
2021-03-10
Subject
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ontogeny; mammal; feeding; swallowing; ANATOMY; EMG; DEGLUTITION; PHYSIOLOGY; HYOID bone; INFANTS; MAMMAL anatomy; MOTOR unit
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Mayerl CJ; Steer KE; Chava AM; Bond LE; Edmonds CE; Gould FDH; Stricklen BM; Hieronymous TL; German RZ
Description
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All mammalian infants suckle, a fundamentally different process than drinking in adults. Infant mammal oropharyngeal anatomy is also anteroposteriorly compressed and becomes more elongate postnatally. While suckling and drinking require different patterns of muscle use and kinematics, little insight exists into how the neuromotor and anatomical systems change through the time that infants suckle. We measured the orientation, activity and contractile patterns of five muscles active during infant feeding from early infancy until weaning using a pig model. Muscles not aligned with the long axis of the body became less mediolaterally orientated with age. However, the timing of activation and the contractile patterns of those muscles exhibited little change, although variation was larger in younger infants than older infants. At both ages, there were differences in contractile patterns within muscles active during both sucking and swallowing, as well as variation among muscles during swallowing. The changes in anatomy, coupled with less variation closer to weaning and little change in muscle firing and shortening patterns suggest that the neuromotor system may be optimized to transition to solid foods. The lesser consequences of aspiration during feeding on an all-liquid diet may not necessitate the evolution of variation in neuromotor function through infancy.
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<a href="http://doi.org/10.1098/rspb.2021.0052" target="_blank" rel="noreferrer noopener">10.1098/rspb.2021.0052</a>
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journalArticle
2021
anatomy
April 2021 List
Bond LE
Chava AM
Deglutition
Department of Anatomy & Neurobiology
Edmonds CE
emg
Feeding
German RZ
Gould FDH
Hieronymous TL
HYOID bone
Infants
journalArticle
mammal
MAMMAL anatomy
Mayerl CJ
MOTOR unit
NEOMED College of Medicine
NEOMED Postdoc Publications
ontogeny
Physiology
Proceedings of the Royal Society B. Biological Sciences
Steer KE
Stricklen BM
swallowing
-
Text
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URL Address
<a href="http://doi.org/10.1093/iob/obaa028" target="_blank" rel="noreferrer noopener">http://doi.org/10.1093/iob/obaa028</a>
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Issue
1
Volume
2
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Title
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Preterm Birth Impacts the Timing and Excursion of Oropharyngeal Structures during Infant Feeding
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Integrative Organismal Biology
Date
A point or period of time associated with an event in the lifecycle of the resource
2020
1905-07
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Edmonds CE; Catchpole EA; Gould FDH; Bond LE; Stricklen BM; German RZ; Mayerl CJ
Description
An account of the resource
Swallowing in mammals requires the precise coordination of multiple oropharyngeal structures, including the palatopharyngeal arch. During a typical swallow, the activity of the palatopharyngeus muscle produces pharyngeal shortening to assist in producing pressure required to swallow and may initiate epiglottal flipping to protect the airway. Most research on the role of the palatopharyngeal arch in swallowing has used pharyngeal manometry, which measures the relative pressures in the oropharynx, but does not quantify the movements of the structures involved in swallowing. In this study, we assessed palatopharyngeal arch and soft palate function by comparing their movements in a healthy population to a pathophysiological population longitudinally through infancy (term versus preterm pigs). In doing so, we test the impact of birth status, postnatal maturation, and their interaction on swallowing. We tracked the three-dimensional (3D) movements of radiopaque beads implanted into relevant anatomical structures and recorded feeding via biplanar high-speed videofluoroscopy. We then calculated the total 3D excursion of the arch and soft palate, the orientation of arch movement, and the timing of maximal arch constriction during each swallow. Soft palate excursion was greater in term infants at both 7 and 17 days postnatal, whereas arch excursion was largely unaffected by birth status. Maximal arch constriction occurred much earlier in preterm pigs relative to term pigs, a result that was consistent across age. There was no effect of postnatal age on arch or soft palate excursion. Preterm and term infants differed in their orientation of arch movement, which most likely reflects both differences in anatomy and differences in feeding posture. Our results suggest that the timing and coordination of oropharyngeal movements may be more important to feeding performance than the movements of isolated structures, and that differences in the neural control of swallowing and its maturation in preterm and term infants may explain preterm swallowing deficits.
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<a href="http://doi.org/10.1093/iob/obaa028" target="_blank" rel="noreferrer noopener">10.1093/iob/obaa028</a>
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The file format, physical medium, or dimensions of the resource
journalArticle
2020
Bond LE
Catchpole EA
Department of Anatomy & Neurobiology
Edmonds CE
German RZ
Gould FDH
Integrative Organismal Biology
journalArticle
March 2021 List
Mayerl CJ
NEOMED College of Medicine
NEOMED Postdoc Publications
NEOMED Student Publications
Stricklen BM
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1371/journal.pone.0246954" target="_blank" rel="noreferrer noopener">http://doi.org/10.1371/journal.pone.0246954</a>
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Pages
e0246954
Issue
2
Volume
16
ISSN
1932-6203
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Title
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Does birth weight affect neonatal body weight, growth, and physiology in an animal model?
Publisher
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PLOS One
Date
A point or period of time associated with an event in the lifecycle of the resource
2021
1905-07
Subject
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PREMATURE infants; BIRTH weight; BODY weight; DEGLUTITION; PHYSIOLOGY; UMBILICAL cord clamping; WEIGHT gain; WEIGHT in infancy
Creator
An entity primarily responsible for making the resource
Adjerid K; Mayerl CJ; Gould FDH; Edmonds CE; Stricklen BM; Bond LE; German RZ
Description
An account of the resource
Infant birth weight affects neuromotor and biomechanical swallowing performance in infant pig models. Preterm infants are generally born low birth weight and suffer from delayed development and neuromotor deficits. These deficits include critical life skills such as swallowing and breathing. It is unclear whether these neuromotor and biomechanical deficits are a result of low birth weight or preterm birth. In this study we ask: are preterm infants simply low birth weight infants or do preterm infants differ from term infants in weight gain and swallowing behaviors independent of birth weight? We use a validated infant pig model to show that preterm and term infants gain weight differently and that birth weight is not a strong predictor of functional deficits in preterm infant swallowing. We found that preterm infants gained weight at a faster rate than term infants and with nearly three times the variation. Additionally, we found that the number of sucks per swallow, swallow duration, and the delay of the swallows relative to the suck cycles were not impacted by birth weight. These results suggest that any correlation of developmental or swallowing deficits with reduced birth weight are likely linked to underlying physiological immaturity of the preterm infant.
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<a href="http://doi.org/10.1371/journal.pone.0246954" target="_blank" rel="noreferrer noopener">10.1371/journal.pone.0246954</a>
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The file format, physical medium, or dimensions of the resource
journalArticle
2021
Adjerid K
BIRTH weight
Body Weight
Bond LE
Deglutition
Department of Anatomy & Neurobiology
Edmonds CE
German RZ
Gould FDH
journalArticle
March 2021 List
Mayerl CJ
NEOMED College of Medicine
NEOMED Postdoc Publications
Physiology
PloS one
PREMATURE infants
Stricklen BM
UMBILICAL cord clamping
Weight Gain
WEIGHT in infancy
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1152/japplphysiol.00668.2020" target="_blank" rel="noreferrer noopener">http://doi.org/10.1152/japplphysiol.00668.2020</a>
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ISSN
1522-1601 0161-7567
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October 2020 List
NEOMED College
NEOMED College of Medicine
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Department of Anatomy & Neurobiology
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Sucking vs swallowing coordination, integration and performance in preterm and term infants.
Publisher
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Journal of Applied Physiology
Date
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2020
2020-10-15
Subject
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feeding; physiology; infant; preterm; Sensorimotor integration
Creator
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Mayerl CJ;Edmonds CE;Catchpole EA;Myrla AM;Gould FDH;Bond LE;Stricklen BM;German RZ
Description
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Mammalian infants must be able to integrate the acquisition, transport, and swallowing of food in order to effectively feed. Understanding how these processes are coordinated is critical, as they have differences in neural control and sensitivity to perturbation. Despite this, most studies of infant feeding focus on isolated processes, resulting in a limited understanding of the role of sensorimotor integration in the different processes involved in infant feeding. This is especially problematic in the context of preterm infants, as they are considered to have a pathophysiological brain development and often experience feeding difficulties. Here, we use an animal model to study how the different properties of food acquisition, transport, and swallowing differ between term and preterm infants longitudinally through infancy in order to understand which processes are sensitive to variation in the bolus being swallowed. We found that term infants are better able to acquire milk than preterm infants, and that properties of acquisition are strongly correlated with the size of the bolus being swallowed. In contrast, behaviors occurring during the pharyngeal swallow, such as hyoid and soft palate movements, show little to no correlation with bolus size. These results highlight the pathophysiological nature of the preterm brain and also demonstrate that behaviors occurring during oral transport are much more likely to respond to sensory intervention than those occurring during the 'pharyngeal phase'.
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<a href="http://doi.org/10.1152/japplphysiol.00668.2020" target="_blank" rel="noreferrer noopener">10.1152/japplphysiol.00668.2020</a>
Format
The file format, physical medium, or dimensions of the resource
journalArticle
2020
Bond LE
Catchpole EA
Department of Anatomy & Neurobiology
Edmonds CE
Feeding
German RZ
Gould FDH
Infant
Journal of Applied Physiology
journalArticle
Mayerl CJ
Myrla AM
NEOMED College of Medicine
NEOMED College of Medicine Postdoc
NEOMED Postdoc Publications
NEOMED Student Publications
October 2020 List
Physiology
preterm
sensorimotor integration
Stricklen BM
-
Text
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URL Address
<a href="http://doi.org/10.1096/fasebj.2020.34.s1.02235" target="_blank" rel="noreferrer noopener">http://doi.org/10.1096/fasebj.2020.34.s1.02235</a>
Issue
S1
Volume
34
ISSN
0892-6638
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<a href="http://neomed.idm.oclc.org/login?url=http://doi.org/10.1096/fasebj.2020.34.s1.02235" target="_blank" rel="noreferrer noopener">NEOMED Full-text Holding (if available) - Proxy DOI: 10.1096/fasebj.2020.34.s1.02235</a>
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Update Year & Number
September 2020 List
NEOMED College
NEOMED College of Medicine
NEOMED Department
NEOMED Postdoc Publications
Department of Anatomy & Neurobiology
NEOMED Student Publications
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Muscle function during feeding through infancy
Publisher
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Faseb Journal
Date
A point or period of time associated with an event in the lifecycle of the resource
2020
2020-04
Creator
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Mayerl CJ;Tobin H;Chava A;Edmonds C;Gould FDH;Stricklen B;Bond L;German RZ
Description
An account of the resource
Infant mammalian feeding is a complex process that requires the integration of different behaviors and over twenty‐five muscles controlled by multiple cranial nerves. Despite extensive characterization of muscle activity during a feeding sequence, from suckling to swallowing, specific biomechanics of muscle function are unknown. The function of a muscle is determined by both when the muscle is active and the line of action of the muscle, as well as the change in length during activity. In mammals, there is potential for the line of action of the muscles involved in swallowing to change through ontogeny, as infants have a compressed oropharyngeal anatomy relative to adults. Additionally, while we understand when muscles are active during infant feeding, little has been done to understand whether those activity patterns correspond to concentric, eccentric, or isometric contractions. Here, we used contrast‐based microCT scanning coupled with electromyography (EMG) and fluoromicrometry to test the possibility that muscle function changes through infancy using our validated infant pig model. We collected anatomical data from pigs at infancy and just prior to weaning (21 days old), and isolated muscles of interest in Avizo. We collected EMG and fluoromicrometry data from five muscles involved in feeding (Geniohyoid, Digastric, Stylohyoid, Thyrohyoid, and Omohyoid) at the same ages. We found substantive changes in muscle anatomy through infancy and found extensive variation in muscle firing patterns and function within muscles. Some muscles (eg thyrohyoid) exhibited concentric contractions, whereas other muscles were eccentric (eg omohyoid). Still others exhibited multiple functions, and were eccentric during sucking EMG bursts, but isometric during swallowing EMG bursts (eg geniohyoid). Additionally, we found regional heterogeneity in muscle firing patterns in some muscles (eg stylohyoid), whereby electrodes placed in the middle of the muscle showed activity during swallows, but electrodes placed closer to the hyoid (more ventrally) recorded activity during sucking and swallowing. These results highlight the complexity of infant mammal feeding and demonstrate that muscle activity does not necessarily indicate muscle function. Instead, many muscles that are traditionally thought to function to pull the hyoid along their line of action may actually be functioning to stabilize the hyoid during swallowing. This suggests that control and coordination of the oropharyngeal structures is likely to be more important for successful feeding function than strength or the velocity of moving those structures.
Identifier
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<a href="http://doi.org/10.1096/fasebj.2020.34.s1.02235" target="_blank" rel="noreferrer noopener">10.1096/fasebj.2020.34.s1.02235</a>
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Format
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journalArticle
2020
Bond L
Chava A
Department of Anatomy & Neurobiology
Edmonds C
Faseb Journal
German RZ
Gould FDH
journalArticle
Mayerl CJ
NEOMED College of Medicine
NEOMED College of Medicine Postdoc
NEOMED College of Medicine Student
NEOMED Postdoc Publications
NEOMED Student Publications
September 2020 List
Stricklen B
Tobin H
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1152/jn.00409.2020" target="_blank" rel="noreferrer noopener">http://doi.org/10.1152/jn.00409.2020</a>
ISSN
1522-1598
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<a href="http://neomed.idm.oclc.org/login?url=http://doi.org/10.1152/jn.00409.2020" target="_blank" rel="noreferrer noopener">NEOMED Full-text Holding (if available) - Proxy DOI: 10.1152/jn.00409.2020</a>
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
Update Year & Number
September 2020 List
NEOMED College
NEOMED College of Medicine
NEOMED Department
Department of Anatomy & Neurobiology
NEOMED Postdoc Publications
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Muscle activity and kinematics show different responses to recurrent laryngeal nerve lesion in mammal swallowing.
Publisher
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Journal Of Neurophysiology
Date
A point or period of time associated with an event in the lifecycle of the resource
2020
2020-09-23
Subject
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Swallowing; aspiration; variation; neuromuscular function
Creator
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Gould FDH;Lammers Andrew R;Mayerl CJ;Ohlemacher J;German RZ
Description
An account of the resource
Understanding the interactions between neural and musculoskeletal systems is key to identifying mechanisms of functional failure. Mammalian swallowing is a complex, poorly understood motor process. Lesion of the recurrent laryngeal nerve, a sensory and motor nerve of the upper airway, results in airway protection failure (liquid entry into the airway) during swallowing through an unknown mechanism. We examined how muscle and kinematic changes after recurrent laryngeal nerve lesion relate to airway protection in eight infant pigs. We tested two hypotheses: 1) Kinematics and muscle function will both change in response to lesion in swallows with and without airway protection failure 2) Differences in both kinematics and muscle function will predict whether airway protection failure occurs in lesion and intact pigs. We recorded swallowing with high speed videofluoroscopy and simultaneous electromyography of oropharyngeal muscles pre- and post-recurrent laryngeal nerve lesion. Lesion changed the relationship between airway protection and timing of tongue and hyoid movements. Changes in onset and duration of hyolaryngeal muscles post-lesion were less associated with airway protection outcomes. The tongue and hyoid kinematics all predicted airway protection outcomes differently pre and post-lesion. Onset and duration of activity of activity in only one infrahyoid and one suprahyoid muscle showed a change in predictive relationship pre- and post-lesion. Kinematics of the tongue and hyoid more directly reflect changes in airway protection s pre and post lesion than muscle activation patterns. Identifying mechanisms of airway protection failure requires specific functional hypotheses that link neural motor outputs to muscle activation to specific movements.
Identifier
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<a href="http://doi.org/10.1152/jn.00409.2020" target="_blank" rel="noreferrer noopener">10.1152/jn.00409.2020</a>
Rights
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Format
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journalArticle
2020
Aspiration
Department of Anatomy & Neurobiology
German RZ
Gould FDH
Journal of neurophysiology
journalArticle
Lammers Andrew R
Mayerl CJ
NEOMED College of Medicine
NEOMED Postdoc Publications
neuromuscular function
Ohlemacher J
September 2020 List
swallowing
Variation