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Altered Default Mode Network Dynamics in Civil Aviation Pilots.

Xi Chen1, Kaijun Xu1, Yong Yang1

  • 1Institute of Aviation Human Factors and Ergonomics, Department of Aviation Psychology, Institute of Flight Technology, Civil Aviation Flight University of China, Guanghan, China.

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Summary

Pilots show stronger connections within the default mode network (DMN), a brain network crucial for cognitive functions. This suggests the DMN plays a key role in the neurophysiology of flying.

Keywords:
default mode networkflight hoursfunctional connectivitypilotresting-state fMRI

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Aviation Psychology

Background:

  • Aviation is vital to global economies, yet air disasters pose significant risks.
  • Understanding the psychophysiology of flying is crucial, with limited research on pilots.
  • The default mode network (DMN) is integral to cognitive functions relevant to aviation.

Purpose of the Study:

  • To investigate the functional properties of the DMN in pilots.
  • To explore how DMN connectivity differs in pilots compared to non-pilots.

Main Methods:

  • Utilized resting-state functional magnetic resonance imaging (fMRI) data.
  • Employed independent component analysis (ICA) and functional connectivity analysis.
  • Compared DMN functional properties between 26 pilots and 24 controls.

Main Results:

  • Pilots demonstrated increased functional integration in the precuneus/posterior cingulate cortex (PCC) and left middle occipital gyrus.
  • Enhanced functional connectivity was observed between the precuneus/PCC and the medial superior frontal gyrus in pilots.
  • These findings indicate altered DMN functional organization in pilots.

Conclusions:

  • Pilots exhibit heightened functional connectivity within the DMN.
  • The DMN is implicated in the neurophysiological mechanisms underlying flight.
  • This research underscores the DMN's significance in pilot cognition and performance.