Preserved working memory performance along with subcortical modulation during peri-ictal phases in spontaneous...

Area of Science:

• Neuroscience
• Neurology
• Cognitive Science

Background:

• Migraine-related cognitive difficulties are not fully understood.
• The lateral frontoparietal network shows reversible disturbances during migraine attacks.
• Subcortical regions interact with this network during spontaneous attacks.

Purpose of the Study:

• To analyze cognitive performance and brain activation during a working memory task in migraine patients across the migraine cycle.
• To compare migraine patients to healthy participants.

Main Methods:

• Prospective, within-subject study involving 10 episodic migraine patients and 14 healthy controls.
• 3T functional magnetic resonance imaging (fMRI) during a working memory task.
• Assessments across four phases: preictal, ictal, postictal, and interictal.

Main Results:

• Patients and controls demonstrated similar working memory task performance and brain activity in frontal and parietal regions.
• Migraine patients showed significantly decreased hypothalamic activity in the postictal phase compared to controls.
• Hypothalamic activity changes differed significantly between postictal and interictal/preictal phases in migraine patients.

Conclusions:

• Cognition-related brain activation during working memory tasks is comparable in migraine patients and controls across the migraine cycle.
• Migraine patients exhibit reduced subcortical (hypothalamic) neural activity in the postictal phase.
• Further research is necessary due to sample size limitations and to fully understand brain coping mechanisms during migraine.