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Updated: Jul 4, 2026

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

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Published on: February 6, 2019

Controlling chaos for spatiotemporal intermittency.

Noriko Oikawa1, Yoshiki Hidaka, Shoichi Kai

  • 1Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University, Fukuoka, Japan. oikawa@athena.ap.kyushu-u.ac.jp

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|June 4, 2008
PubMed
Summary
This summary is machine-generated.

Researchers controlled spatiotemporal intermittency in liquid crystals by modulating voltage. This method transitions turbulent states to ordered defect lattices (DL) via resonance, offering new insights into pattern formation.

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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication

Published on: February 6, 2019

Area of Science:

  • Nonlinear dynamics
  • Soft matter physics
  • Liquid crystal electrohydrodynamics

Background:

  • Spatiotemporal intermittency is characterized by the coexistence of ordered structures and turbulent states.
  • Electroconvective systems in nematic liquid crystals exhibit complex spatiotemporal behaviors.
  • Understanding and controlling these transitions is crucial for fundamental physics and potential applications.

Purpose of the Study:

  • To investigate the control of spatiotemporal intermittency in a nematic liquid crystal electroconvective system.
  • To demonstrate the transition from a turbulent state to an ordered defect lattice (DL).
  • To elucidate the mechanism underlying this controlled transition.

Main Methods:

  • Applying a few percent amplitude modulation to the applied AC voltage.
  • Analyzing the system's response to modulated AC voltage.
  • Investigating the frequency dependence of the control, particularly resonance effects.

Main Results:

  • Amplitude modulation of AC voltage effectively controls spatiotemporal intermittency.
  • The optimal control frequency matches the intrinsic oscillation frequency of the defect lattice.
  • The transition to a DL occurs via domain penetration, not nucleation, driven by spatial entrainment.

Conclusions:

  • Amplitude modulation provides a method to transition from turbulence to ordered DL states in liquid crystals.
  • Resonance between DL oscillation and modulation frequency is key to achieving spatial entrainment and control.
  • This work offers insights into controlling complex spatiotemporal patterns in dissipative systems.