Raissa K. Mathura

Conserved fiber topography of the anterior limb of the internal capsule in treatment-resistant psychiatric patients

The paper examines the preservation of anterior limb of the internal capsule (ALIC) topography in treatment-resistant psychiatric patients, finding it consistent with healthy and preclinical patterns.

Neural signatures of impaired semantic contextualization in Autism Spectrum Disorder

This study uses large language models to analyze neural responses in autistic individuals, finding reduced contextualization signatures compared to controls.

The neural basis of emotional generalization in empathy

This study investigates how the brain generalizes emotions across individuals, finding that the insula encodes emotions and persons separately, enabling cross-person generalization.

Hippocampus serves as a repository for spoken and heard word meanings during conversations

The paper shows hippocampal neurons encode meanings of spoken and heard words using shared geometric embeddings, enabling abstract cross-personal representations while preserving speaker identity binding.

Human neuronal firing is modulated by the frequency of local field potential oscillations

The paper investigates frequency tuning in human neurons using intracranial recordings and finds 27% of neurons show firing preferences within specific oscillatory frequencies, particularly low-theta.

Linguistic contextualization in the human hippocampus

The paper shows that hippocampal neurons encode word position and context in a way similar to self-attention in large language models.

Plasticity and Language in the Anesthetized Human Hippocampus

This study shows that the human hippocampus can process oddball tones and language stimuli, including semantic and grammatical features, even under general anesthesia.

Independent Continuous Tracking of Multiple Agents in the Human Hippocampus

The paper investigates how hippocampal neurons track multiple agents during pursuit tasks, finding multiplexed neural maps and semi-orthogonal subspaces for distinguishing agents.

Insula uses overlapping codes for emotion in self and others

The paper shows that the insula uses overlapping neural patterns for recognizing self and others' emotions, while other regions use different patterns.

Brain mechanisms underlying the emotion processing bias in treatment-resistant depression

This paper investigates neural mechanisms of emotion processing bias in treatment-resistant depression using sEEG data from patients and controls, finding altered amygdala and prefrontal cortex activity patterns and their modulation by deep brain stimulation.

Prefrontal network engagement by deep brain stimulation in limbic hubs

This study investigates the neurophysiological effects of deep brain stimulation (DBS) on prefrontal networks in limbic hubs, showing differential modulation of gamma oscillations and subject-specific responses.

Default mode network spatio-temporal electrophysiological signature and causal role in creativity

This study investigates the spatio-temporal electrophysiological patterns of the default mode network (DMN) during creativity and mind wandering, revealing distinct dynamics and causal roles in creative thinking.

Spontaneous Neuronal Oscillations in the Human Insula are Hierarchically Organized Traveling Waves

This study investigates the electrophysiological dynamics of the human insula using intracranial EEG, revealing hierarchical organization of theta and beta oscillations as traveling waves.

Intracranial EEG spectral feature analysis and focal brain stimulation reveal affective specialization within dorsal anterior cingulate cortex

The paper uses intracranial EEG to analyze spectral features in the dorsal anterior cingulate cortex, revealing hemispheric specialization for valence and intensity processing and showing causal effects of stimulation on emotional face perception.