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- Publisher Website: 10.1113/jphysiol.1995.sp020751
- Scopus: eid_2-s2.0-0029066489
- PMID: 7666374
- WOS: WOS:A1995RC21800022
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Article: Power spectral analysis of respiratory responses to pharyngeal stimulation in cats: Comparisons with eupnoea and gasping
Title | Power spectral analysis of respiratory responses to pharyngeal stimulation in cats: Comparisons with eupnoea and gasping |
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Authors | |
Issue Date | 1995 |
Publisher | Wiley-Blackwell Publishing Ltd.. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0022-3751 |
Citation | Journal Of Physiology, 1995, v. 485 n. 2, p. 551-559 How to Cite? |
Abstract | Based on similarities between properties of gasping and the aspiration reflex, we hypothesized that this reflex activates the central pattern generator for gasping. To evaluate this hypothesis, we have analysed high-frequency oscillations in phrenic and hypoglossal neural activities. These oscillations, analysed by power and coherence spectra, are considered as signatures of the central pattern generators for automatic ventilatory activity. In decerebrate, vagotomized, paralysed and ventilated cats, the aspiration reflex was elicited in eupnoea and gasping by mechanical stimulation of the pharynx and electrical stimulation of the glossopharyngeal nerve. Compared with eupnoeic values, the peaks in the power spectra occurred at higher frequencies in spontaneous gasping. Peaks in the coherence spectra showed identical changes. Power and coherence spectra of inspiratory neural activities during the aspiration reflex differed markedly from those of eupnoea, but were similar to those in gasping. We conclude that mechanical stimulation of the pharynx or electrical stimulation of the glossopharyngeal nerve activates a reflex by which the central pattern generator for eupnoea is depressed, and that for gasping is activated. Our results also support the concept that separate brainstem mechanisms generate ventilatory activity in eupnoea and gasping. |
Persistent Identifier | http://hdl.handle.net/10722/171621 |
ISSN | 2023 Impact Factor: 4.7 2023 SCImago Journal Rankings: 1.708 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Tomori, Z | en_US |
dc.contributor.author | Fung, ML | en_US |
dc.contributor.author | Donic, V | en_US |
dc.contributor.author | Donicova, V | en_US |
dc.contributor.author | St John, WM | en_US |
dc.date.accessioned | 2012-10-30T06:16:01Z | - |
dc.date.available | 2012-10-30T06:16:01Z | - |
dc.date.issued | 1995 | en_US |
dc.identifier.citation | Journal Of Physiology, 1995, v. 485 n. 2, p. 551-559 | en_US |
dc.identifier.issn | 0022-3751 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/171621 | - |
dc.description.abstract | Based on similarities between properties of gasping and the aspiration reflex, we hypothesized that this reflex activates the central pattern generator for gasping. To evaluate this hypothesis, we have analysed high-frequency oscillations in phrenic and hypoglossal neural activities. These oscillations, analysed by power and coherence spectra, are considered as signatures of the central pattern generators for automatic ventilatory activity. In decerebrate, vagotomized, paralysed and ventilated cats, the aspiration reflex was elicited in eupnoea and gasping by mechanical stimulation of the pharynx and electrical stimulation of the glossopharyngeal nerve. Compared with eupnoeic values, the peaks in the power spectra occurred at higher frequencies in spontaneous gasping. Peaks in the coherence spectra showed identical changes. Power and coherence spectra of inspiratory neural activities during the aspiration reflex differed markedly from those of eupnoea, but were similar to those in gasping. We conclude that mechanical stimulation of the pharynx or electrical stimulation of the glossopharyngeal nerve activates a reflex by which the central pattern generator for eupnoea is depressed, and that for gasping is activated. Our results also support the concept that separate brainstem mechanisms generate ventilatory activity in eupnoea and gasping. | en_US |
dc.language | eng | en_US |
dc.publisher | Wiley-Blackwell Publishing Ltd.. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=0022-3751 | en_US |
dc.relation.ispartof | Journal of Physiology | en_US |
dc.subject.mesh | Animals | en_US |
dc.subject.mesh | Cats | en_US |
dc.subject.mesh | Decerebrate State - Physiopathology | en_US |
dc.subject.mesh | Electric Stimulation | en_US |
dc.subject.mesh | Female | en_US |
dc.subject.mesh | Hypoglossal Nerve - Physiology | en_US |
dc.subject.mesh | Male | en_US |
dc.subject.mesh | Pharynx - Physiology | en_US |
dc.subject.mesh | Phrenic Nerve - Physiology | en_US |
dc.subject.mesh | Physical Stimulation | en_US |
dc.subject.mesh | Reflex - Physiology | en_US |
dc.subject.mesh | Respiratory Mechanics - Physiology | en_US |
dc.subject.mesh | Vagotomy | en_US |
dc.title | Power spectral analysis of respiratory responses to pharyngeal stimulation in cats: Comparisons with eupnoea and gasping | en_US |
dc.type | Article | en_US |
dc.identifier.email | Fung, ML:fungml@hkucc.hku.hk | en_US |
dc.identifier.authority | Fung, ML=rp00433 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1113/jphysiol.1995.sp020751 | - |
dc.identifier.pmid | 7666374 | - |
dc.identifier.scopus | eid_2-s2.0-0029066489 | en_US |
dc.identifier.volume | 485 | en_US |
dc.identifier.issue | 2 | en_US |
dc.identifier.spage | 551 | en_US |
dc.identifier.epage | 559 | en_US |
dc.identifier.isi | WOS:A1995RC21800022 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Tomori, Z=7005413045 | en_US |
dc.identifier.scopusauthorid | Fung, ML=7101955092 | en_US |
dc.identifier.scopusauthorid | Donic, V=6603853690 | en_US |
dc.identifier.scopusauthorid | Donicova, V=6507521760 | en_US |
dc.identifier.scopusauthorid | St John, WM=36831054200 | en_US |
dc.identifier.issnl | 0022-3751 | - |