Nicole R. Provenza

A population code for semantics in human hippocampus

The paper investigates how semantic information is encoded in human hippocampal activity during speech processing, finding that distributed neural patterns capture semantic relationships similar to language models.

Electrophysiological dissociation of human posterior cingulate cortex contributions to value- and memory-based decision-making

This study identifies a functional dissociation in human posterior cingulate cortex, showing dorsal PCC integrates value and memory-based decisions while ventral PCC does not.

Electrophysiological features of signals recorded from white matter

The paper analyzes electrophysiological signals from white matter and finds they have distinct spectral features and higher complexity compared to gray matter.

Estimation of neuronal tuning for word meaning from passively recorded naturalistic speech

The paper develops a pipeline to estimate neuronal tuning for word meaning from naturalistic speech and validates it using patient data and ground-truth controls.

A number simplex in the human medial temporal lobe

The paper identifies simplex-shaped neural manifolds for number representation in the human medial temporal lobe and finds similarities with large language models.

Shared neural geometries for bilingual semantic representations in human hippocampal neurons

The paper investigates how bilinguals represent semantic concepts in two languages, finding shared neural geometries that support translation despite language-specific neuron responses.

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.

Polysemanticity in human hippocampal neurons

This study shows that human hippocampal neurons use polysemantic coding, where neurons represent multiple unrelated semantic features through high-dimensional superposition, enabling efficient contextualization of meaning.

Distinct tasks engage a shared neural subspace in human hippocampus and anterior cingulate cortex

The paper investigates how neural circuits in the human hippocampus and anterior cingulate cortex support multiple tasks, finding shared neural subspaces across distinct behaviors.

A geometric foundation for word meaning in the brain

The paper shows that semantic features in word meaning are encoded in the brain through geometric structures similar to those in language models.

A semantotopic map in human hippocampus

The paper maps semantic organization in the human hippocampus, finding semantotopic patterns and multiscale semantic similarity along the mediolateral axis.

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.

Complementary roles for hippocampus, anterior cingulate cortex, and orbitofrontal cortex in composing continuous choice

The paper examines brain activity during a continuous prey-pursuit task, identifying distinct roles for hippocampus, ACC, and OFC in decision-making processes.

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.

PELP: accounting for missing data in neural time series by Periodic Estimation of Lost Packets

PELP estimates missing data in neural time series from implanted devices by determining the period of stimulation and accounting for data loss during active stimulation.

Estimation of Periodic Signals with Applications to Deep Brain Stimulation

This paper introduces a periodic artifact removal algorithm for DBS signals with missing data and high-frequency stimulation, enabling real-time biomarker discovery in closed-loop DBS systems.

Uncovering biomarkers during therapeutic neuromodulation with PARRM: Period-based Artifact Reconstruction and Removal Method

This paper introduces PARRM, a method to remove stimulation artifacts from neural recordings, improving biomarker detection in neuromodulation.