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Related Concept Videos

Neural Control of Respiration01:18

Neural Control of Respiration

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The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
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Alterations in Respiration II01:30

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There are numerous types of normal and abnormal respiration. Based on ventilatory movements, breathing patterns are classified as regular, deep, or shallow. Examples include Biot's breathing, Cheyne-Stokes respiration, Kussmaul's breathing, hyperventilation, and hypoventilation. Each pattern is clinically significant and aids in evaluating patients.
In Biot's breathing, the respiratory rate and depth are irregular, alternating between periods of deep gasping and apnea. Common causes...
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Physiological Control of Respiration01:23

Physiological Control of Respiration

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Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
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Regulation of Heart Rates01:31

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The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
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Physiology of Respiration II: Neurogenic Control of Respiration01:22

Physiology of Respiration II: Neurogenic Control of Respiration

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The neurogenic control of respiration coordinates various neural networks and pathways to regulate breathing rate and depth, meeting the body's oxygen and carbon dioxide exchange requirements. This system adapts to physiological and environmental conditions, ensuring optimal breathing patterns.
Central Control
The brainstem is the primary site of central control, hosting respiratory centers:
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Mechanism of Breathing II: Expiration01:23

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The Physiology of Expiration: A Seamless Respiratory Process
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Mechanism of Expiration:
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Related Experiment Video

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Breathing modulates gamma synchronization across species.

Joaquín González1,2, Matias Cavelli3,4, Alejandra Mondino3

  • 1Departamento de Fisiología, Facultad de Medicina, Universidad de La República, 11800, Montevideo, Uruguay. joaqgonzar@gmail.com.

Pflugers Archiv : European Journal of Physiology
|October 3, 2022
PubMed
Summary

Breathing rhythms synchronize brain activity, enhancing communication between brain regions during wakefulness. This study reveals how respiration phase modulates neural oscillations, particularly gamma rhythms, across different mammals.

Keywords:
Brain rhythmsCross-frequency couplingEEGGamma oscillationsRespirationSleep–wake cycle

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Area of Science:

  • Neuroscience
  • Systems Neuroscience
  • Computational Neuroscience

Background:

  • Nasal respiration influences brain dynamics by entraining neural oscillations to breathing rate.
  • The functional roles of respiration-entrained oscillations, particularly in long-range communication, remain poorly understood.
  • A common hypothesis suggests these rhythms facilitate neural synchronization and communication.

Purpose of the Study:

  • To investigate the functional roles of respiration-entrained oscillations in mammalian brain communication.
  • To test the hypothesis that respiration-entrained rhythms aid long-range communication and provide windows for synchronization.
  • To analyze how respiration modulates neural activity and synchronization across different sleep-wake states.

Main Methods:

  • Analysis of electrocorticographic (ECoG) recordings from mice, rats, and cats.
  • Examination of neural oscillations and their modulation by respiration phase during various sleep-wake states.
  • Quantification of olfactory bulb-frontal cortex synchronization in the gamma frequency range.

Main Results:

  • Respiration phase modulates cortical gamma oscillation amplitude across mice, rats, and cats, with species-specific frequency bands.
  • Respiration modulates olfactory bulb-frontal cortex synchronization in the gamma range, creating transient windows of increased synchrony.
  • Modulation of long-range gamma synchrony is prominent during quiet and active wake states but diminishes during sleep.

Conclusions:

  • Respiration-entrained brain rhythms play a crucial role in orchestrating neural communication in awake mammals.
  • The findings support the hypothesis that respiration facilitates long-range communication through modulated neural synchrony.
  • Respiration acts as a fundamental mechanism for coordinating brain activity and communication during wakefulness.