Inclusion Criteria:

1. Adults aged 18 to 60 years.
2. Diagnosed with patent foramen ovale (PFO) with significant right-to-left shunt.
3. For the case group: Diagnosis of migraine (with or without aura) according to the International Classification of Headache Disorders (ICHD-3).
4. For the control group: No history of migraine.
5. Willing and able to provide written informed consent.
6. Education level of primary school or higher.

Exclusion Criteria:

1. Patients with a history of PFO closure or other migraine-related surgical treatments;
2. Patients with other severe cardiac or neurological diseases, mental disorders, or psychological conditions;
3. Patients with contraindications to closure surgery or MRI scans (e.g., severe infection, coagulation dysfunction, cardiac pacemakers, aneurysm clips, metallic foreign bodies in the eye, non-removable metal dentures, etc.);
4. Patients unable to complete migraine symptom assessments or imaging examinations due to other reasons.