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Updated: Dec 31, 2025
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Electrophysiology on Isolated Brainstem-spinal Cord Preparations from Newborn Rodents Allows Neural Respiratory Network Output Recording
Published on: November 19, 2015
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Respiratory rhythm generation and pattern formation: oscillators and network mechanisms
1Department of Neurological Surgery, Baylor College of Medicine, 7200 Cambridge Street, Houston, TX 77030, USA.
Journal of Integrative Neuroscience
|January 9, 2020
Summary
The respiratory rhythm originates from complex neural interactions, with fast inhibitory neurotransmission crucial for normal breathing patterns. GABABergic neuromodulation also influences respiratory control, particularly during development.
Area of Science:
- Neuroscience
- Respiratory Physiology
Background:
- The respiratory rhythm is generated by a network of oscillators in the brainstem.
- The classic model involves the preBötzinger complex (preBötzC) and Bötzinger complex (BötzC).
- Modulatory inputs from various brain structures shape eupneic discharge.
Purpose of the Study:
- To review and discuss the role of spontaneously bursting oscillators and network mechanisms in respiratory rhythmogenesis.
- To explore the contribution of fast inhibitory neurotransmission (GABAAergic and glycinergic) to respiratory pattern formation.
- To investigate the less-explored role of GABAB receptor mediated neuromodulation in respiratory control.
Main Methods:
- Review of empirical and computational studies on respiratory rhythmogenesis.
- Analysis of models based on pacemaker, network, or hybrid mechanisms.
- Examination of the effects of GABAAergic, glycinergic, and GABABergic receptor modulation on respiratory patterns in vivo, in situ, and in vitro.
Main Results:
- Fast inhibitory neurotransmission is essential for generating eupneic respiratory patterns.
- Pacemaker mechanisms can independently generate rhythmicity even with fast inhibition blocked.
- GABABergic signaling powerfully modulates respiratory rhythm and pattern, with developmental changes observed.
Conclusions:
- Both pacemaker and network mechanisms, relying on fast inhibition, contribute to respiratory rhythmogenesis.
- GABABergic signaling plays a significant modulatory role, potentially mediating inhibitory neurotransmission for triphasic eupnea during development.
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