Scholars@Duke
Christopher Logan Chariker

Christopher Logan Chariker

Assistant Research Professor of Mathematics
Mathematics

Selected Publications

A Computational Model of Direction Selectivity in Macaque V1 Cortex Based on Dynamic Differences between On and Off Pathways.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · April 2022 This paper is about neural mechanisms of direction selectivity (DS) in macaque primary visual cortex, V1. We present data (on male macaque) showing strong DS in a majority of simple cells in V1 layer 4Cα, the cortical layer that receives direct afferent in ... Full text Open Access Cite

Time evolution of a mean-field generalized contact process

Journal Article Journal of Statistical Mechanics: Theory and Experiment · February 1, 2022 AbstractWe investigate the macroscopic time evolution and stationary states of a mean field discrete voltage neuron model, or equivalently, a generalized contact process in ... Full text Open Access Cite

A theory of direction selectivity for macaque primary visual cortex

Journal Article Proceedings of the National Academy of Sciences · August 10, 2021 SignificanceMotion perception is important for primates, and direction selectivity (DS), the ability to perceive the direction a target is moving, is an essential part of motion perception. Yet no satisfactory me ... Full text Open Access Cite

A case study in the functional consequences of scaling the sizes of realistic cortical models.

Journal Article PLoS computational biology · July 2019 Neuroscience models come in a wide range of scales and specificity, from mean-field rate models to large-scale networks of spiking neurons. There are potential trade-offs between simplicity and realism, versatility and computational speed. This paper is ab ... Full text Open Access Cite

How well do reduced models capture the dynamics in models of interacting neurons?

Journal Article Journal of Mathematical Biology · January 2019 Full text Cite

Rhythm and Synchrony in a Cortical Network Model.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · October 2018 We studied mechanisms for cortical gamma-band activity in the cerebral cortex and identified neurobiological factors that affect such activity. This was done by analyzing the behavior of a previously developed, data-driven, large-scale network model that s ... Full text Open Access Cite

Orientation Selectivity from Very Sparse LGN Inputs in a Comprehensive Model of Macaque V1 Cortex.

Journal Article The Journal of neuroscience : the official journal of the Society for Neuroscience · December 2016 A new computational model of the primary visual cortex (V1) of the macaque monkey was constructed to reconcile the visual functions of V1 with anatomical data on its LGN input, the extreme sparseness of which presented serious challenges to theoretically s ... Full text Open Access Cite

Emergent spike patterns in neuronal populations

Journal Article Journal of Computational Neuroscience · February 2015 Full text Cite