Catherine A. Schevon

Investigating the dynamic relationship between anxiety and spatial memory using autonomous ecological momentary assessment

This study develops and validates an EMA protocol to assess anxiety and spatial memory dynamics in epilepsy patients, finding no direct link between anxiety and memory accuracy but identifying task familiarity and temporal trends.

Electrophysiologically Targeted Biopsies Reveal the Transcriptional Landscape of Focal Epilepsy

This study uses electrophysiologically guided biopsies and single-nucleus RNA sequencing to identify transcriptional differences between seizure focus and ictal penumbra in focal epilepsy.

Large Language Models Reveal the Neural Tracking of Linguistic Context in Attended and Unattended Multi-Talker Speech

This study uses large language models to analyze how attention affects neural tracking of linguistic context in multi-talker speech environments.

Speaker Identity is Robustly Encoded in Spatial Patterns of Intracranial EEG for Attention Decoding

This paper shows that speaker identity is encoded in spatial patterns of intracranial EEG during attention, enabling a new method for auditory attention decoding.

Suppressing cortical glutamatergic neurons produces paradoxical interictal discharges and seizures

The paper shows that suppressing cortical glutamatergic neurons can paradoxically cause seizures and interictal discharges in vivo.

Eye movements organize excitability state, information coding and network connectivity in the human hippocampus

The paper investigates how eye movements influence neural activity, information coding, and network connectivity in the human hippocampus during natural visual processing.

Cell-type specific responses to single-pulse electrical stimulation of the human brain

This study examines how human neurons respond to single-pulse electrical stimulation, finding that most neurons show firing rate suppression, with differences based on cell type and stimulation distance.

Glioma-Induced Alterations in Excitatory Neurons are Reversed by mTOR Inhibition

This study investigates how mTOR inhibition reverses glioma-induced changes in excitatory neurons, showing effects on mRNA, dendritic spines, and neuronal activity.

Temporal integration in human auditory cortex is predominantly yoked to absolute time, not structure duration

The paper investigates how human auditory cortex integrates sound structures over time versus structure duration, finding that integration is primarily time-yoked.

Brain-controlled augmented hearing for spatially moving conversations in multi-talker environments

This paper develops a brain-controlled assistive hearing system for multi-talker environments with moving conversations, improving speech intelligibility and tracking.

Spectral-switching analysis reveals real-time neuronal network representations of concurrent spontaneous naturalistic behaviors in human brain

The paper uses intracranial-EEG and video data to show that brain regions switch between spectral states in sync, reflecting naturalistic behaviors and forming functional networks.

The Spatial Reach of Neuronal Coherence and Spike-field Coupling across the Human Neocortex

The paper measures the spatial reach of neuronal coherence and spike-field coupling in human neocortex during cognitive tasks, finding a consistent 2-3 cm effective range for local communication.

Human interictal epileptiform discharges are bidirectional traveling waves echoing ictal discharges

The paper shows that interictal epileptiform discharges (IEDs) are bidirectional traveling waves that follow the same path and direction as ictal discharges, suggesting they originate outside the seizure focus.

Distinct signatures of loss of consciousness during Focal Impaired Awareness versus Focal to Bilateral Tonic-Clonic seizures

The paper compares loss of consciousness mechanisms in focal impaired awareness and focal to bilateral tonic-clonic seizures using intracranial EEG data from patients.

Pre-trial predictors of conflict response efficacy in human dorsolateral prefrontal cortex

The paper shows that pre-trial firing rate patterns in human dlPFC predict conflict resolution in cognitive tasks, with distinct but related patterns for different conflict types.

Neuronal firing and waveform alterations through ictal recruitment in humans

The paper develops a novel spike sorting method to analyze neuronal activity during human seizures, finding that recruited neurons show altered action potential waveforms compared to non-recruited tissue.

Multiscale integration organizes hierarchical computation in human auditory cortex

The paper develops a method to estimate neural integration periods in human auditory cortex and shows integration periods increase with cortical hierarchy, correlating with selectivity for acoustic features and sound categories.

Functionally distinct high and low theta oscillations in the human hippocampus

The paper investigates human hippocampal theta oscillations, finding distinct high (8-Hz) and low (3-Hz) frequencies associated with spatial navigation and non-spatial processes respectively.

Glioma-induced alterations in neuronal activity and neurovascular coupling during disease progression

This study tracks glioma progression in mice, showing decreased neuronal synchrony, disrupted neurovascular coupling, and seizure-related hypoxia in infiltrated cortex.

Human dorsal anterior cingulate neurons signal conflict by amplifying task-relevant information

The paper shows that conflict in the dorsal anterior cingulate cortex (dACC) amplifies task-relevant information across neurons, rather than relying on specific conflict-encoding neurons or coactivation of action plans.

Single-neuron representations of spatial targets in humans

This study examines how neurons in the human medial-temporal lobe represent spatial targets during navigation, finding that firing rates change based on target position and heading direction.

Risk of Seizures Induced by Intracranial Research Stimulation: Analysis of 770 Stimulation Sessions

The paper analyzes 770 intracranial stimulation sessions to assess the risk of stimulation-induced seizures, finding 3-6% of sessions likely or possibly caused seizures with no adverse outcomes.

A theoretical model for focal seizure initiation, propagation, termination, and progression

The paper develops a neural network model to simulate focal seizure dynamics, including initiation, propagation, termination, and progression, and identifies mechanisms underlying seizure patterns and synaptic plasticity.

Neurons remap to represent memories in the human entorhinal cortex

The paper identifies trace cells in the human entorhinal cortex that remap their spatial fields to represent memory cues during cued recall.

Role of inhibitory control in modulating spread of focal ictal activity

The paper investigates how inhibitory control affects the spread of focal ictal activity in a rodent model, showing that localized inhibition defects can lead to both classical and epileptic network propagation.