Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials.

Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials. Research Abstract Details 

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Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials. Abstract Text:

Paul W Davenport,Pei-Ying Sarah Chan,Weirong Zhang,Yang-Ling Chou,

The relationship between detection threshold of inspiratory resistive loads and the peaks of the respiratory-related evoked potential (RREP) is unknown. It was hypothesized that the short-latency and long-latency peaks of the RREP would only be elicited by inspiratory loads that exceeded the detection threshold. The detection threshold for inspiratory resistive loads was measured in healthy subjects with inspiratory-interruption or onset load presentations. In a separate protocol, the RREPs were recorded with resistive loads that spanned the detection threshold. The loads were presented in stimulus attend and ignore sessions. Onset and interruption load presentations had the same resistive load detection threshold. The P(1), N(f), and N(1) peaks of the RREP were observed with loads that exceeded the detection threshold in both attend and ignore conditions. The P(300) was present with loads that exceeded the detection threshold only in the attend condition. No RREP components were elicited with subthreshold loads. The P(1), N(f), and P(300) amplitudes varied with resistive load magnitude. The results support the hypothesis that there is a resistive load threshold for eliciting the RREPs. The amplitude of the RREP peaks vary as a function of load magnitude. The cognitive P(300) RREP peak is present only for detectable loads and when the subject attends to the stimulus. The absence of the RREP with loads below the detection threshold and the presence of the RREP elicited by suprathreshold loads are consistent with the gating of these neural measures of respiratory mechanosensory information processing.

Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials. Publishing Authors By Initials

PW Davenport,PY Chan,W Zhang,YL Chou,

For similar psychological phenomena and processes: mental processes: perception: sensory thresholds research abstracts see: psychological phenomena and processes: mental processes: perception: sensory thresholds research

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Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: Journal of applied physiology (Bethesda, Md. : 198

VOLUME: 102

Page Numbers: 276-85

Journal Abbreviation: J. Appl. Physiol.

ISSN: 8750-7587

DAY: 28

MONTH: 09

YEAR: 2006

Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials. Information

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LANGUAGE: eng

NlmUniqueID: 8502536

Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials. Keywords Mesh Terms:

KEYWORDS: Sensory Thresholds

MESH TERMS: physiology

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Grant and Affiliation Information for Detection threshold for inspiratory resistive loads and respiratory-related evoked potentials.

AFFILIATION: Department of Physiological Sciences, Box 100144, HSC, University of Florida, Gainesville, FL 32610, USA. davenportp@mail.vetmed.ufl.edu

Country: United States

AGENCY: United States NHLBI

GRANT: HL-48792

ACRONYM: HL

MEDLINETA: J Appl Physiol

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