Rafael Polanía
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View article: Coupling Between Neural Oscillations and White Matter Integrity Reveals Cognitive Computational Profiles Following COVID-19
Coupling Between Neural Oscillations and White Matter Integrity Reveals Cognitive Computational Profiles Following COVID-19 Open
Persistent cognitive symptoms following SARS-CoV-2 infection have been widely reported, yet their underlying neural mechanisms remain poorly understood. Here, we applied an integrative framework—combining EEG, diffusion MRI, and computatio…
View article: Intracranial Biomarkers for Anterior Thalamic Deep Brain Stimulation in Epilepsy: a long-term observational study
Intracranial Biomarkers for Anterior Thalamic Deep Brain Stimulation in Epilepsy: a long-term observational study Open
Deep brain stimulation (DBS) of the anterior nucleus of the thalamus (ANT) is an established treatment for patients with drug-refractory epilepsy (DRE), yet long-term therapeutic outcomes are highly variable and challenging to predict. Thi…
View article: Bridging Computational and Clinical Strategies to Improve Presurgical Identification of Epileptogenic Networks
Bridging Computational and Clinical Strategies to Improve Presurgical Identification of Epileptogenic Networks Open
About one third of epilepsy patients are drug-resistant. Resective surgery remains a key treatment option but depends critically on accurate identification of the seizure onset zone (SOZ), which is still guided mainly by subjective visual …
View article: Electroencephalography-driven brain-network models for personalized interpretation and prediction of neural oscillations
Electroencephalography-driven brain-network models for personalized interpretation and prediction of neural oscillations Open
This work bridges theoretical neuroscience and clinical practice, offering a novel framework for understanding and predicting brain network dynamics. The resulting approach paves the way for data-driven insights into brain network mechanis…
View article: Efficient numerosity estimation under limited time
Efficient numerosity estimation under limited time Open
The ability to rapidly estimate non-symbolic numerical quantities is a well-conserved sense across species with clear evolutionary advantages. However, despite its importance, this sense is surprisingly imprecise and biased, and a formal e…
View article: Neurometabolic signaling and control of policy complexity
Neurometabolic signaling and control of policy complexity Open
Cognition and adaptive behavior emerge from neural information processing. This must operate within finite metabolic constraints, since neural information processing is metabolically expensive. While neural implementations of action select…
View article: Thalamic connectivity-based Biomarkers for Neuromodulation in Patients with Refractory Epilepsies
Thalamic connectivity-based Biomarkers for Neuromodulation in Patients with Refractory Epilepsies Open
Thalamic electrical stimulation is being used as a treatment for drug-resistant epilepsy, yet current strategies benefit only about half the patients. Advancing patient outcomes necessitates tailored target selection for stimulation includ…
View article: Neurobehavioral meaning of pupil size
Neurobehavioral meaning of pupil size Open
Pupil size is a widely used metric of brain state. It is one of the few signals originating from the brain that can be readily monitored with low-cost devices in basic science, clinical, and home settings. It is, therefore, important to in…
View article: Patients Recovering from COVID-19 who Presented Anosmia During their Acute Episode have Behavioral, Functional, and Structural Brain Alterations
Patients Recovering from COVID-19 who Presented Anosmia During their Acute Episode have Behavioral, Functional, and Structural Brain Alterations Open
Patients recovering from COVID-19 commonly exhibit cognitive and brain alterations, yet the specific neuropathological mechanisms and risk factors that underlie these alterations remain elusive. Given the significant global incidence of CO…
View article: Lateral Prefrontal Theta Oscillations Causally Drive a Computational Mechanism Underlying Conflict Expectation and Adaptation
Lateral Prefrontal Theta Oscillations Causally Drive a Computational Mechanism Underlying Conflict Expectation and Adaptation Open
Adapting our behavior to environmental demands relies on our capacity to perceive and manage potential conflicts within our surroundings. While evidence implicates the involvement of the lateral prefrontal cortex and theta oscillations in …
View article: Functional-based parcellation of the mouse prefrontal cortex for network perturbation analysis
Functional-based parcellation of the mouse prefrontal cortex for network perturbation analysis Open
The prefrontal cortex (PFC) is a region of the brain involved in higher-order cognitive processes such as attention, emotional regulation, and social behavior, making it a hotspot for an ongoing clinical and fundamental research. Important…
View article: Causal evidence for a domain-specific role of left superior frontal sulcus in human perceptual decision making
Causal evidence for a domain-specific role of left superior frontal sulcus in human perceptual decision making Open
Humans and animals can flexibly choose their actions based on different information, ranging from objective states of the environment (e.g., apples are bigger than cherries) to subjective preferences (e.g., cherries are tastier than apples…
View article: Causal evidence for a domain-specific role of left superior frontal sulcus in human perceptual decision making
Causal evidence for a domain-specific role of left superior frontal sulcus in human perceptual decision making Open
Humans and animals can flexibly choose their actions based on different information, ranging from objective states of the environment (e.g., apples are bigger than cherries) to subjective preferences (e.g., cherries are tastier than apples…
View article: The parietal cortex has a causal role in ambiguity computations in humans
The parietal cortex has a causal role in ambiguity computations in humans Open
Humans often face the challenge of making decisions between ambiguous options. The level of ambiguity in decision-making has been linked to activity in the parietal cortex, but its exact computational role remains elusive. To test the hypo…
View article: Multipair phase-modulated temporal interference electrical stimulation combined with fMRI.
Multipair phase-modulated temporal interference electrical stimulation combined with fMRI. Open
Temporal Interference stimulation (TIS) is a promising non-invasive brain stimulation technique exploiting frequency-shifted kHz fields to modulate oscillatory neural activity without invasive procedures. While human studies suggest TIS ef…
View article: Personalized identification, prediction, and stimulation of neural oscillations via data-driven models of epileptic network dynamics
Personalized identification, prediction, and stimulation of neural oscillations via data-driven models of epileptic network dynamics Open
Neural oscillations are considered to be brain-specific signatures of information processing and communication in the brain. They also reflect pathological brain activity in neurological disorders, thus offering a basis for diagnoses and f…
View article: A causal role for the parietal cortex in ambiguity computations in humans
A causal role for the parietal cortex in ambiguity computations in humans Open
Humans often face the challenge of making decisions between ambiguous options. The level of ambiguity in decision-making has been linked to activity in the parietal cortex, but its exact computational role remains elusive. To test the hypo…
View article: Self-modulation of the sense of agency via neurofeedback enhances sensory-guided behavioral control
Self-modulation of the sense of agency via neurofeedback enhances sensory-guided behavioral control Open
The sense of agency is a fundamental aspect of human self-consciousness, whose neural correlates encompass widespread brain networks. Research has explored the neuromodulatory properties of the sense of agency with noninvasive brain stimul…
View article: A neuropsychological basis for temptation-resistant voluntary exercise
A neuropsychological basis for temptation-resistant voluntary exercise Open
SUMMARY Despite well-known health benefits of physical activity, many people under-exercise, and what drives prioritization of exercise over other alternatives is unclear. We implement a novel paradigm allowing to study how freely behaving…
View article: Efficient numerosity estimation under limited time
Efficient numerosity estimation under limited time Open
The ability to rapidly estimate non-symbolic numerical quantities is a well-conserved sense across species with clear evolutionary advantages. Despite its importance, the rapid representation and estimation of numerosity is surprisingly im…
View article: Functional network dynamics between the anterior thalamus and the cortex in deep brain stimulation for epilepsy
Functional network dynamics between the anterior thalamus and the cortex in deep brain stimulation for epilepsy Open
Owing to its unique connectivity profile with cortical brain regions, and its suggested role in the subcortical propagation of seizures, the anterior nucleus of the thalamus (ANT) has been proposed as a key deep brain stimulation (DBS) tar…
View article: Modulation of Visual Contrast Sensitivity with tRNS across the Visual System, Evidence from Stimulation and Simulation
Modulation of Visual Contrast Sensitivity with tRNS across the Visual System, Evidence from Stimulation and Simulation Open
Transcranial random noise stimulation (tRNS) has been shown to significantly improve visual perception. Previous studies demonstrated that tRNS delivered over cortical areas acutely enhances visual contrast detection of weak stimuli. Howev…