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Related Experiment Video

Updated: May 20, 2026

Investigating Migraine-Like Behavior Using Light Aversion in Mice
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Investigating Migraine-Like Behavior Using Light Aversion in Mice

Published on: August 11, 2021

Resilience in migraine brains: decrease of coherence after photic stimulation.

Mayara Mendonça-de-Souza1, Ubirakitan M Monteiro, Amana S Bezerra

  • 1Grupo de Neurodinâmica, Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco Brazil.

Frontiers in Human Neuroscience
|July 28, 2012
PubMed
Summary

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This summary is machine-generated.

Migraine patients exhibit altered brain activity, with higher cortical coherence before sensory stimulation. This unique neural profile may reflect a resilience mechanism during migraine-free periods.

Area of Science:

  • Neuroscience
  • Medical Imaging

Background:

  • Migraine is often accompanied by photophobia and phonophobia, leading patients to seek reduced sensory input.
  • Migraineurs may possess an inherent predisposition in sensory cortical processing, potentially indicated by altered neuronal network coherence.

Purpose of the Study:

  • To quantify cortical partial directed coherence (PDC) in electroencephalographic (EEG) recordings of migraine patients and controls.
  • To investigate differences in brain activity between migraineurs and healthy individuals under basal and photic stimulation conditions.

Main Methods:

  • EEG recordings were obtained from 11 women with migraine with visual aura and 7 healthy women.
  • Recordings were performed in a basal state and during photic stimulation to assess cortical coherence.
Keywords:
EEGhuman patientsmigrainepartial directed coherenceresilience

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Main Results:

  • Migraine patients displayed greater cortical coherence than controls in the basal state, suggesting a predisposition to sensory processing.
  • Photic stimulation led to decreased cortical coherence in migraine patients, whereas controls showed an increase.

Conclusions:

  • Migraineurs exhibit increased cortical coherence before photic stimulation, which decreases upon stimulation, potentially indicating a resilience mechanism.
  • Partial directed coherence (PDC) analysis can generate a "coherence map" for migraine management and treatment monitoring.