Browsing by Subject "Nerve Net"
Now showing items 1-20 of 29
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A framework for integrating the songbird brain.
(J Comp Physiol A Neuroethol Sens Neural Behav Physiol, 2002-12)Biological systems by default involve complex components with complex relationships. To decipher how biological systems work, we assume that one needs to integrate information over multiple levels of complexity. The songbird ... -
A Functionally Conserved Gene Regulatory Network Module Governing Olfactory Neuron Diversity.
(PLoS Genet, 2016-01)Sensory neuron diversity is required for organisms to decipher complex environmental cues. In Drosophila, the olfactory environment is detected by 50 different olfactory receptor neuron (ORN) classes that are clustered in ... -
A Three-Threshold Learning Rule Approaches the Maximal Capacity of Recurrent Neural Networks.
(PLoS Comput Biol, 2015-08)Understanding the theoretical foundations of how memories are encoded and retrieved in neural populations is a central challenge in neuroscience. A popular theoretical scenario for modeling memory function is the attractor ... -
Altered resting-state functional connectivity of basolateral and centromedial amygdala complexes in posttraumatic stress disorder.
(Neuropsychopharmacology, 2014-01)The amygdala is a major structure that orchestrates defensive reactions to environmental threats and is implicated in hypervigilance and symptoms of heightened arousal in posttraumatic stress disorder (PTSD). The basolateral ... -
Bistability and up/down state alternations in inhibition-dominated randomly connected networks of LIF neurons.
(Scientific reports, 2017-09-20)Electrophysiological recordings in cortex in vivo have revealed a rich variety of dynamical regimes ranging from irregular asynchronous states to a diversity of synchronized states, depending on species, anesthesia, and ... -
Changes in Brain Resting-state Functional Connectivity Associated with Peripheral Nerve Block: A Pilot Study.
(Anesthesiology, 2016-08)BACKGROUND: Limited information exists on the effects of temporary functional deafferentation (TFD) on brain activity after peripheral nerve block (PNB) in healthy humans. Increasingly, resting-state functional connectivity ... -
Characteristics of sequential activity in networks with temporally asymmetric Hebbian learning.
(Proceedings of the National Academy of Sciences of the United States of America, 2020-11-11)Sequential activity has been observed in multiple neuronal circuits across species, neural structures, and behaviors. It has been hypothesized that sequences could arise from learning processes. However, it is still unclear ... -
Coherence potentials: loss-less, all-or-none network events in the cortex.
(PLoS Biol, 2010-01-12)Transient associations among neurons are thought to underlie memory and behavior. However, little is known about how such associations occur or how they can be identified. Here we recorded ongoing local field potential (LFP) ... -
Complementary topology of maintenance and manipulation brain networks in working memory.
(Scientific reports, 2018-12-13)Working memory (WM) is assumed to consist of a process that sustains memory representations in an active state (maintenance) and a process that operates on these activated representations (manipulation). We examined evidence ... -
Computational inference of neural information flow networks.
(PLoS Comput Biol, 2006-11-24)Determining how information flows along anatomical brain pathways is a fundamental requirement for understanding how animals perceive their environments, learn, and behave. Attempts to reveal such neural information flow ... -
Corollary discharge circuits in the primate brain.
(Curr Opin Neurobiol, 2008-12)Movements are necessary to engage the world, but every movement results in sensorimotor ambiguity. Self-movements cause changes to sensory inflow as well as changes in the positions of objects relative to motor effectors ... -
Distinct and atypical intrinsic and extrinsic cell death pathways between photoreceptor cell types upon specific ablation of Ranbp2 in cone photoreceptors.
(PLoS Genet, 2013-06)Non-autonomous cell-death is a cardinal feature of the disintegration of neural networks in neurodegenerative diseases, but the molecular bases of this process are poorly understood. The neural retina comprises a mosaic ... -
Distress tolerance to auditory feedback and functional connectivity with the auditory cortex.
(Psychiatry research. Neuroimaging, 2018-12)Distress tolerance is the capacity to withstand negative affective states in pursuit of a goal. Low distress tolerance may bias an individual to avoid or escape experiences that induce affective distress, but the neural ... -
Emotion-attention network interactions during a visual oddball task.
(Brain Res Cogn Brain Res, 2004-06)Emotional and attentional functions are known to be distributed along ventral and dorsal networks in the brain, respectively. However, the interactions between these systems remain to be specified. The present study used ... -
Functional parcellation of attentional control regions of the brain.
(J Cogn Neurosci, 2004-01)Recently, a number of investigators have examined the neural loci of psychological processes enabling the control of visual spatial attention using cued-attention paradigms in combination with event-related functional magnetic ... -
General functional connectivity: Shared features of resting-state and task fMRI drive reliable and heritable individual differences in functional brain networks.
(NeuroImage, 2019-04)Intrinsic connectivity, measured using resting-state fMRI, has emerged as a fundamental tool in the study of the human brain. However, due to practical limitations, many studies do not collect enough resting-state data to ... -
Inhibition stabilization is a widespread property of cortical networks.
(eLife, 2020-06-29)Many cortical network models use recurrent coupling strong enough to require inhibition for stabilization. Yet it has been experimentally unclear whether inhibition-stabilized network (ISN) models describe cortical function ... -
Low- and High-Frequency Repetitive Transcranial Magnetic Stimulation Effects on Resting-State Functional Connectivity Between the Postcentral Gyrus and the Insula.
(Brain connectivity, 2019-05)The insular cortex supports the conscious awareness of physical and emotional sensations, and the ability to modulate the insula could have important clinical applications in psychiatry. Repetitive transcranial magnetic ... -
Measuring robustness of brain networks in autism spectrum disorder with Ricci curvature.
(Scientific reports, 2020-07-02)Ollivier-Ricci curvature is a method for measuring the robustness of connections in a network. In this work, we use curvature to measure changes in robustness of brain networks in children with autism spectrum disorder (ASD). ... -
Memory capacity of networks with stochastic binary synapses.
(PLoS Comput Biol, 2014-08)In standard attractor neural network models, specific patterns of activity are stored in the synaptic matrix, so that they become fixed point attractors of the network dynamics. The storage capacity of such networks has ...
