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Prefrontal control of respiration.
V G Alexandrov1, T G Ivanova, N P Alexandrova
1Department of Human and Animal Anatomy and Physiology, Herzen State Pedagogical University of Russia, St. Petersburg, Russia.
Summary
Different prefrontal cortex regions in rats influence breathing patterns. Electrical stimulation revealed distinct respiratory control roles for the insular and infralimbic cortices, impacting inspiratory flow and tidal volume.
Area of Science:
- Neuroscience
- Respiratory Physiology
Background:
- The prefrontal cortex plays a role in complex behaviors.
- Its specific involvement in respiratory control remains incompletely understood.
Purpose of the Study:
- To investigate the role of distinct prefrontal cortex areas in regulating respiratory patterns.
- To test the hypothesis that the insular and infralimbic cortices are involved in respiratory control.
Main Methods:
- Electrical microstimulation of the insular and infralimbic cortices in anesthetized rats.
- Analysis of changes in respiratory parameters such as inspiratory flow, tidal volume, and respiratory time.
Main Results:
- Specific sites within the anterior insular cortex modulated breathing by decreasing inspiratory flow and tidal volume.
- Stimulation of caudal insular and infralimbic cortices resulted in increased inspiratory flow and decreased tidal volume and respiratory time.
- Distinct respiratory responses were localized to different subregions of the prefrontal cortex.
Conclusions:
- The findings support the hypothesis that different parts of the prefrontal cortex are involved in respiratory control.
- The insular and infralimbic cortices play distinct roles in modulating respiratory patterns in rats.
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