Amparo Ruiz‐Tagle

Salience Network Dynamics Across Spontaneous Attacks, Interictal Rest and Interictal Pain Imagery in Menstrually Related Migraine

Inês Esteves, Alexandre Perdigão, Ana R. Fouto, Amparo Ruiz‐Tagle et autres

The persistent sensitivity to sensory and painful stimuli of people with migraine has been associated with disruption of the salience network (SN). Although migraine is characterized by severe head pain attacks, brain changes have been observed in people with migraine in between …

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Integrated anatomical and functional connectivity mapping in episodic migraine: a spectral graph theory approach

Gonçalo Grácio, Ana Matoso, Inês Esteves, Ana R. Fouto et autres

Migraine disproportionately affects women, yet how migraine physiology reshapes large-scale brain communication remains unclear. We combined diffusion-weighted imaging (DWI) and resting-state fMRI in female participants (14 patients with episodic migraine without aura; 15 matched healthy controls) to test how direct and indirect …

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Using ECG-derived respiration for explaining BOLD-fMRI fluctuations during rest and respiratory modulations

Inês Esteves, Ana R. Fouto, Amparo Ruiz‐Tagle, Gina Caetano et autres

Recording physiological signals during fMRI is valuable for multiple purposes but often requires additional setup, increasing complexity and participant discomfort. This is particularly challenging in simultaneous EEG-fMRI studies, which typically already include electrocardiogram (ECG) recordings. Here, we aim to leverage the known …

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Distinct salience network dynamics between the imagery and the experience of migraine attacks

Inês Esteves, Alexandre Perdigão, Ana R. Fouto, Amparo Ruiz‐Tagle et autres

Motivation: Spontaneous migraine attacks are challenging to study and most research is performed during the interictal phase. Goal(s): A pain imagery task may be able to elicit the migraine experience, even during the symptom-free phase, particularly impacting the salience network, which is …

Using ECG-derived respiration for explaining BOLD-fMRI fluctuations during rest and respiratory modulations

Inês Esteves, Ana R. Fouto, Amparo Ruiz‐Tagle, Gina Caetano et autres

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Disrupted salience network dynamics during the imagery of migraine attacks

Inês Esteves, Alexandre Perdigão, Ana R. Fouto, Amparo Ruiz‐Tagle et autres

Abstract Moderate to severe head pain is a hallmark of recurring migraine attacks. However, it is challenging to study patients during spontaneous attacks and most research on the brain mechanisms of pain in migraine patients has been limited to the processing of …

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White matter alterations in episodic migraine without aura patients assessed with diffusion MRI: effect of free water correction

Irene Guadilla, Ana R. Fouto, Amparo Ruiz‐Tagle, Inês Esteves et autres

OBJECTIVE: To assess the effect of modeling free water (FW) on the identification of white matter (WM) microstructure alterations using diffusion Magnetic Resonance Imaging (dMRI) in episodic migraine without aura patients compared with healthy controls. BACKGROUND: Diffusion tensor imaging (DTI) studies examining …

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Uncovering longitudinal changes in the brain functional connectome along the migraine cycle: a multilevel clinical connectome fingerprinting framework

Inês Esteves, Ana R. Fouto, Amparo Ruiz‐Tagle, Gina Caetano et autres

BACKGROUND: Changes in large-scale brain networks have been reported in migraine patients, but it remains unclear how these manifest in the various phases of the migraine cycle. Case-control fMRI studies spanning the entire migraine cycle are lacking, precluding a complete assessment of …

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Cerebrovascular reactivity mapping using breath-hold BOLD-fMRI: Comparison of signal models combined with voxelwise lag optimization

Catarina Domingos, Inês Esteves, Ana R. Fouto, Amparo Ruiz‐Tagle et autres

Abstract Cerebrovascular reactivity (CVR) can be mapped noninvasively using blood oxygenation level dependent (BOLD) fMRI during a breath-hold (BH) task. Previous studies showed that the BH BOLD response is best modeled as the convolution of the partial pressure of end-tidal CO2 (PetCO2) …

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Alterations of White Matter Microstructure in Migraine Patients Vary in the Peri-ictal Phases

Ana R. Fouto, Rita G. Nunes, Irene Guadilla, Amparo Ruiz‐Tagle et autres

Alterations in white matter (WM) microstructure are commonly found in migraine patients. Here, we employ a longitudinal study of episodic migraine without aura using diffusion magnetic resonance imaging (dMRI) to investigate whether such WM microstructure alterations vary through the different phases of …

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The involvement of the cerebellum in structural connectome changes in episodic migraine without aura

Ana Matoso, Ana R. Fouto, Inês Esteves, Amparo Ruiz‐Tagle et autres

Motivation: While the pathophysiology of migraine remains incompletely understood, several studies reported connectivity disruptions across large-scale brain networks. Goal(s): To study changes in the structural connectome of migraine patients including cortical and subcortical regions as well as the cerebellum, often disregarded. Approach: …

Multilevel clinical connectome fingerprinting: uncovering functional connectivity changes across the migraine cycle

Inês Esteves, Ana R. Fouto, Amparo Ruiz‐Tagle, Gina Caetano et autres

Motivation: Case-control fMRI studies spanning the entire migraine cycle are lacking, precluding a complete assessment of brain functional connectivity in migraine. Such studies are essential for understanding the inherent changes in the brain of migraine patients as well as transient changes along …