A. C. Snyder
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View article: Neural Dynamics in Extrastriate Cortex Underlying False Alarms
Neural Dynamics in Extrastriate Cortex Underlying False Alarms Open
The unfolding of neural population activity can be described as a dynamical system. Stability in the latent dynamics that characterize neural population activity has been linked with consistency in animal behavior, such as motor control or…
View article: Using Generative Models of Naturalistic Scenes to Sample Neural Population Tuning Manifolds
Using Generative Models of Naturalistic Scenes to Sample Neural Population Tuning Manifolds Open
Investigations into sensory coding in the visual system have typically relied on the use of either simple, unnatural visual stimuli or natural images. Simple stimuli, such as Gabor patches, have been effective when looking at single neuron…
View article: Distractor anticipation during working memory is associated with theta and beta oscillations across spatial scales
Distractor anticipation during working memory is associated with theta and beta oscillations across spatial scales Open
Introduction Anticipating distractors during working memory maintenance is critical to reduce their disruptive effects. In this study, we aimed to identify the oscillatory correlates of this process across different spatial scales of neura…
View article: Distractor anticipation during working memory is associated with theta and beta oscillations across spatial scales
Distractor anticipation during working memory is associated with theta and beta oscillations across spatial scales Open
Anticipating distractors during working memory maintenance is critical to reduce their disruptive effects. In this study, we aimed to identify the oscillatory correlates of this process across different spatial scales of neural activity. W…
View article: Neural Dynamics Underlying False Alarms in Extrastriate Cortex
Neural Dynamics Underlying False Alarms in Extrastriate Cortex Open
Summary The unfolding of neural population activity can be approximated as a dynamical system. Stability in the latent dynamics that characterize neural population activity has been linked with consistency in animal behavior, such as motor…
View article: Using generative models of naturalistic scenes to sample neural population tuning manifolds
Using generative models of naturalistic scenes to sample neural population tuning manifolds Open
Investigations into sensory coding in the visual system have typically relied on the use of either simple, unnatural visual stimuli, or natural images. Simple stimuli, such as Gabor patches, have been effective when looking at single neuro…
View article: Automated customization of large-scale spiking network models to neuronal population activity
Automated customization of large-scale spiking network models to neuronal population activity Open
Understanding brain function is facilitated by constructing computational models that accurately reproduce aspects of brain activity. Networks of spiking neurons capture the underlying biophysics of neuronal circuits, yet the dependence of…
View article: Dynamic attention signalling in V4: Relation to fast‐spiking/non‐fast‐spiking cell class and population coupling
Dynamic attention signalling in V4: Relation to fast‐spiking/non‐fast‐spiking cell class and population coupling Open
The computational role of a neuron during attention depends on its firing properties, neurotransmitter expression and functional connectivity. Neurons in the visual cortical area V4 are reliably engaged by selective attention but exhibit d…
View article: Dynamic attention signaling in V4: relation to excitatory/inhibitory cell class and population coupling
Dynamic attention signaling in V4: relation to excitatory/inhibitory cell class and population coupling Open
Neurons have different roles in attention processing. These roles are determined by a neuron’s firing properties, neurotransmitter expression, and functional connectivity. Neurons in the visual cortical area, V4, are reliably engaged by se…
View article: EEG Signals Index a Global Signature of Arousal Embedded in Neuronal Population Recordings
EEG Signals Index a Global Signature of Arousal Embedded in Neuronal Population Recordings Open
Electroencephalography (EEG) has long been used to index brain states, from early studies describing activity in the presence and absence of visual stimulation to modern work employing complex perceptual tasks. These studies have shed ligh…
View article: Altered Task Demands Lead to a Division of Labor for Sensory and Cognitive Processing in the Middle Temporal Area
Altered Task Demands Lead to a Division of Labor for Sensory and Cognitive Processing in the Middle Temporal Area Open
Neurons in the primate Middle Temporal (MT) area signal information about visual motion and work together with the lateral prefrontal cortex (LPFC) to support memory-guided comparisons of visual motion direction. These areas are reciprocal…
View article: The eyes reflect an internal cognitive state hidden in the population activity of cortical neurons
The eyes reflect an internal cognitive state hidden in the population activity of cortical neurons Open
Decades of research have shown that global brain states such as arousal can be indexed by measuring the properties of the eyes. The spiking responses of neurons throughout the brain have been associated with the pupil, small fixational sac…
View article: A Stable Population Code for Attention in Prefrontal Cortex Leads a Dynamic Attention Code in Visual Cortex
A Stable Population Code for Attention in Prefrontal Cortex Leads a Dynamic Attention Code in Visual Cortex Open
Attention often requires maintaining a stable mental state over time while simultaneously improving perceptual sensitivity. These requirements place conflicting demands on neural populations, as sensitivity implies a robust response to per…
View article: Bridging neuronal correlations and dimensionality reduction
Bridging neuronal correlations and dimensionality reduction Open
Two commonly used approaches to study interactions among neurons are spike count correlation, which describes pairs of neurons, and dimensionality reduction, applied to a population of neurons. While both approaches have been used to study…
View article: EEG signals index a global signature of arousal embedded in neuronal population recordings
EEG signals index a global signature of arousal embedded in neuronal population recordings Open
Electroencephalography (EEG) has long been used to index brain states, from early studies describing activity during visual stimulation to modern work employing complex perceptual tasks. These studies shed light on brain-wide signals but l…
View article: The eyes reflect an internal cognitive state hidden in the population activity of cortical neurons
The eyes reflect an internal cognitive state hidden in the population activity of cortical neurons Open
Summary Decades of research have shown that global brain states such as arousal can be indexed by measuring the properties of the eyes. Neural signals from individual neurons, populations of neurons, and field potentials measured throughou…
View article: Distinct Sources of Variability Affect Eye Movement Preparation
Distinct Sources of Variability Affect Eye Movement Preparation Open
The sequence of events leading to an eye movement to a target begins the moment visual information has reached the brain, well in advance of the eye movement itself. The process by which visual information is encoded and used to generate a…
View article: Early steps toward understanding neuronal communication
Early steps toward understanding neuronal communication Open
Purpose of review The computational power of the brain arises from the complex interactions between neurons. One straightforward method to quantify the strength of neuronal interactions is by measuring correlation and coherence. Efforts to…
View article: Population activity structure of excitatory and inhibitory neurons
Population activity structure of excitatory and inhibitory neurons Open
Many studies use population analysis approaches, such as dimensionality reduction, to characterize the activity of large groups of neurons. To date, these methods have treated each neuron equally, without taking into account whether neuron…
View article: A Sequential Scheme for Large Scale Bayesian Multiple Testing
A Sequential Scheme for Large Scale Bayesian Multiple Testing Open
The problem of large scale multiple testing arises in many contexts, including testing for pairwise interaction among large numbers of neurons. With advances in technologies, it has become common to record from hundreds of neurons simultan…
View article: Dynamics of excitatory and inhibitory networks are differentially altered by selective attention
Dynamics of excitatory and inhibitory networks are differentially altered by selective attention Open
Inhibition and excitation form two fundamental modes of neuronal interaction, yet we understand relatively little about their distinct roles in service of perceptual and cognitive processes. We developed a multidimensional waveform analysi…
View article: Establishing a Statistical Link between Network Oscillations and Neural Synchrony
Establishing a Statistical Link between Network Oscillations and Neural Synchrony Open
Pairs of active neurons frequently fire action potentials or "spikes" nearly synchronously (i.e., within 5 ms of each other). This spike synchrony may occur by chance, based solely on the neurons' fluctuating firing patterns, or it may occ…
View article: Stimulus-dependent spiking relationships with the EEG
Stimulus-dependent spiking relationships with the EEG Open
The development and refinement of noninvasive techniques for imaging neural activity is of paramount importance for human neuroscience. Currently, the most accessible and popular technique is electroencephalography (EEG). However, nearly a…