Joana Cabral

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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How stimulation waveform shape affects collective oscillations in the brain networks

Vivek Sharma, Paul H. E. Tiesinga, Joana Cabral

Abstract Brain oscillations emerge from nonlinear interactions across anatomically connected neural populations, alternating between transiently coordinated and desynchronised states. Transcranial alternating current stimulation (tACS) can modulate these dynamics, but most work has focused on frequency and amplitude, leaving waveform shape comparatively unexplored. …

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Encuentro de Biología Teórica

Joana Cabral

La neurociencia moderna enfrenta el desafío de comprender cómo emergen los procesos cognitivos complejos desde la actividad coordinada de miles de millones de neuronas. Tradicionalmente, el cerebro se ha conceptualizado como una red de unidades discretas interconectadas. Sin embargo, evidencia experimental reciente …

Dynamic Exploration of Resting-State Brain Attractors Altered in Major Depressive Disorder

Leonor Abreu, Joana Cabral

Major depressive disorder (MDD) represents a heterogeneous condition lacking reliable neurobiological biomarkers and a mechanistic understanding. Time-resolved characterization of brain dynamics reveals that mental health is associated with a characteristic dynamical regime, exhibiting spontaneous switching between a repertoire of ghost attractor states …

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Dynamical Exploration of Resting-State Attractors Altered in Major Depressive Disorder

Leonor Abreu, Joana Cabral

Major depressive disorder (MDD) represents a heterogeneous condition lacking reliable neurobiological biomarkers and mechanistic understanding. Time-resolved characterisation of brain dynamics reveals that mental health is associated with a characteristic dynamical regime, exhibiting spontaneous switching between a repertoire of ghost attractor states forming …

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Increased striatal coupling one week after ischemic stroke revealed by ultrafast functional MRI

Rita Alves, Joana Cabral, Tânia G. Carvalho, Noam Shemesh

Abstract Background Network reorganization following ischemic stroke is thought to play a role in recovery. Although cortico-cortical reorganization is widely established, changes in interhemispheric striatal connections following ischemia remain poorly understood, even when stroke occurs in motor areas. Given the importance of …

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Diet and Clinical Outcomes in a Heart Failure Population

Philip G. Joseph, Mahshid Dehghan, Justin Adrian Ezekowitz, Victoria Miller et autres

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Brain modes of resonance estimated by a biophysical multi-compartment finite elements model

Inês Gonçalves, Dulce A. Oliveira, Catarina Rocha, Joana Cabral et autres

Neuroimaging studies reveal correlated brain activity across distant regions, suggesting underlying mechanisms that constrain brain function beyond the complex interactions between neurons. Despite these findings, the origins of these patterns and their alterations in neurological disorders remain unclear. Current literature suggests that …

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Creativity in Music: The Brain Dynamics of Jazz Improvisation

Patricia Alves Da Mota, Henrique Miguel Fernandes, Ana Teresa Lourenço Queiroga, Eloise A. Stark et autres

Jazz improvisation is a controlled yet ecologically valid framework for investigating spontaneous creative behavior. We examined spatiotemporal brain dynamics when skilled musicians applied different strategies to improvise on a jazz standard. We performed rest and task-based functional magnetic resonance imaging on 16 …

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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 …

Physical exercise and brain network dynamics: reduction of frontoparietal-striatal connectivity following 1 hour of aerobic cycling

Jetro J. Tuulari, Wajiha Bano, Tiina Saanijoki, Joana Cabral et autres

ABSTRACT Physical exercise is beneficial for metabolic health and cognitive performance. In addition, exercise can be highly pleasurable and and serves as an effective stress reliever. Extant studies have highlighted frontal, parietal, and subcortical brain changes following acute bouts of exercise. However, …

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Spectral patterns of MEG oscillatory coupling emerge from meta-stable dynamics with small coupling delays

Felix Siebenhühner, Francesca Castaldo, Joana Cabral, Jaakko Matias Palva et autres

Abstract Functional connectivity (FC) is a fundamental mechanism of neural communication, connecting distinct oscillating populations. Oscillatory networks exhibit heterogeneity across frequencies and coupling modes whose origins are not well understood, but have been suggested to involve a complex interplay of critical-like dynamics …

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