Chris Lewis

This paper introduces a hybrid micro-ECoG array for multi-scale brain activity recording and functional mapping across species.

This study uses wide-field calcium imaging to analyze neocortical activity across different layers in mice, revealing layer-specific functional connectivity patterns.

The paper identifies a distinct hypothalamus-habenula circuit that governs risk preference in economic decision-making.

This study shows that top-down signals modulate gamma-band synchronization and stimulus information encoding in V1 without affecting firing rates.

The paper shows that hippocampal astrocytes integrate calcium signals from distal processes to somata, influenced by salient events and locus coeruleus activity.

The paper shows that dendritic responses in L5 pyramidal neurons during learning correspond to unsigned temporal difference error components, with salience signals aiding task learning.

This study identifies striatum-projecting prefrontal cortex neurons as critical for spatial working memory maintenance in mice.

The paper shows that visual exposure enhances stimulus encoding and persistence in primary visual cortex by reducing neuronal selectivity and increasing response range, leading to better stimulus reconstruction.

The paper uses optogenetics to show that cortical resonance selectively transmits coherent input components through feedback inhibition and spike-frequency adaptation.

The paper investigates how anatomical connection strength relates to rhythmic synchronization in macaque cortex, finding that strength predicts synchronization and vice versa, with frequency and direction specificity.

The paper introduces Opto-E-Dura, a soft, stretchable ECoG array that enables multimodal, multi-scale neuroscience studies through optical and electrical integration.

The paper shows that increasing the excitation-to-inhibition ratio in mouse cortical circuits using chemogenetics reduces long-range connectivity and can be detected via fMRI-based classifiers.

The paper shows that gamma-band input specifically drives spike output in neuronal networks through optogenetic stimulation and analysis of temporal responses.

This study investigates how lateral orbitofrontal cortex neurons guide sensory circuits during reversal learning in mice through top-down signals and value prediction error.

The paper shows that theta oscillations in macaque neocortex and hippocampus are stronger during early-stage sleep compared to alert movement, while hippocampal beta and gamma oscillations are more active during walking and other active behaviors.

This study reconstructs resting-state networks from macaque ECoG data using source-space independent component analysis, identifying seven cortical generators in the motor system with spatially continuous dynamics.

The paper demonstrates in vivo magnetic recordings of neuronal activity using spin-electronics based probes in cat visual cortex, showing event-related fields up to several nanoteslas.

This paper investigates gamma-band resonance in visual cortex using optogenetic stimulation and electrophysiological recordings in anesthetized cats, finding that circuits resonate most strongly to gamma-band inputs.

The paper shows that gamma-band activity in macaque V4 and cat 21a rhythmically modulates neuronal responses and behavioral reaction times through gain modulation.