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... terms of groups of cells or macroscopic brain domains, but holds that these can be broken down, without residue, to an account of individual cell interactions. Some have suggested that the neuron doctrine should be replaced by a description of brain function at a ‘global’ level (Gold and Stoljar, 19 ...
... terms of groups of cells or macroscopic brain domains, but holds that these can be broken down, without residue, to an account of individual cell interactions. Some have suggested that the neuron doctrine should be replaced by a description of brain function at a ‘global’ level (Gold and Stoljar, 19 ...
A Neural Mass Model to Simulate Different Rhythms in a Cortical
... of four neural populations which communicate via excitatory and inhibitory synapses: pyramidal cells, excitatory interneurons, inhibitory interneurons with slow synaptic kinetics (GABAA,slow ), and inhibitory interneurons with faster synaptic kinetics (GABAA,fast ). In the following, a quantity whic ...
... of four neural populations which communicate via excitatory and inhibitory synapses: pyramidal cells, excitatory interneurons, inhibitory interneurons with slow synaptic kinetics (GABAA,slow ), and inhibitory interneurons with faster synaptic kinetics (GABAA,fast ). In the following, a quantity whic ...
Balancing the brain: resting state networks and deep brain stimulation
... persists for an extended period of time away from the natural equilibrium state. The brain is constantly exploring the potential functional network configurations, which over longer time windows will come to reflect the anatomical connectivity but over shorter time scales may be considerably more va ...
... persists for an extended period of time away from the natural equilibrium state. The brain is constantly exploring the potential functional network configurations, which over longer time windows will come to reflect the anatomical connectivity but over shorter time scales may be considerably more va ...
Probabilistic
... Physical Equivalence: Every node in DAG mapped to a Bayesian Cell in H/W; incorporates non-volatile Arithmetic Composers for Bayesian computations Reconfigurable links using Switch Boxes (similar to FPGAs) to map any BN structure Persistence in configuration + computation through non-volatile Compos ...
... Physical Equivalence: Every node in DAG mapped to a Bayesian Cell in H/W; incorporates non-volatile Arithmetic Composers for Bayesian computations Reconfigurable links using Switch Boxes (similar to FPGAs) to map any BN structure Persistence in configuration + computation through non-volatile Compos ...
Logic and Complexity in Cognitive Science
... and engage in fallacious reasoning on even very simple tasks. Are we really this bad at logic? Even worse, Cheng and colleagues [20] suggest people may continue to do poorly at the task even when they have taken an introductory logic class! Does this imply that human behavior does not decompose into ...
... and engage in fallacious reasoning on even very simple tasks. Are we really this bad at logic? Even worse, Cheng and colleagues [20] suggest people may continue to do poorly at the task even when they have taken an introductory logic class! Does this imply that human behavior does not decompose into ...
Canonical computations of cerebral cortex
... This was first established in cat V1, in which cortex, and thus intracortical input, was silenced either by cooling [49] or by electrical shock (which evoked massive inhibition) [50], leaving only thalamic input. These manipulations did not change the tuning for stimulus orientation of the membrane ...
... This was first established in cat V1, in which cortex, and thus intracortical input, was silenced either by cooling [49] or by electrical shock (which evoked massive inhibition) [50], leaving only thalamic input. These manipulations did not change the tuning for stimulus orientation of the membrane ...
Copy of the full paper
... Neurons communicate with each other by means of chemical and electrical synapses. It is now clear that the strengths of many, if not most, synapses are altered by either the temporal pattern of firing of the presynaptic neuron and/or by amines or neuropeptides delivered hormonally or by neuromodulat ...
... Neurons communicate with each other by means of chemical and electrical synapses. It is now clear that the strengths of many, if not most, synapses are altered by either the temporal pattern of firing of the presynaptic neuron and/or by amines or neuropeptides delivered hormonally or by neuromodulat ...
The combinatorics and dynamics of a discrete k winners take all
... are responsible to prevent the system from blowing up (all or almost all neurons firing the same time). In the simplified model, this inhibition is modeled by letting only the k neurons with the highest weighted input fire. The main goal of the research is to characterize what kinds of connections o ...
... are responsible to prevent the system from blowing up (all or almost all neurons firing the same time). In the simplified model, this inhibition is modeled by letting only the k neurons with the highest weighted input fire. The main goal of the research is to characterize what kinds of connections o ...
The Dynamics of Functional Brain Networks
... state of higher global integration in order to meet extrinsic task demands. Indeed, all of the 375 regions showed a significant shift toward greater inter-modular connectivity (BT) during the N-back task when compared to the resting state (FDR a < 0.05 for all 375 regions). Despite this global shift ...
... state of higher global integration in order to meet extrinsic task demands. Indeed, all of the 375 regions showed a significant shift toward greater inter-modular connectivity (BT) during the N-back task when compared to the resting state (FDR a < 0.05 for all 375 regions). Despite this global shift ...
Neural correlates of consciousness: A definition of the dorsal and
... by most current descriptions of the visual hierarchy appear to have connections with the ventral stream as illustrated by the middle temporal (MT) and superior temporal polysensory (STP) [22,23]. The projections to the ventral stream from these classic dorsal stream areas (especially MT) may come fr ...
... by most current descriptions of the visual hierarchy appear to have connections with the ventral stream as illustrated by the middle temporal (MT) and superior temporal polysensory (STP) [22,23]. The projections to the ventral stream from these classic dorsal stream areas (especially MT) may come fr ...
Information transmission and recovery in neural communications
... associated with the manner in which information from sensory systems is encoded in a neural system. Understanding neural codes is a major issue in neuroscience 关2兴. It is generally agreed that the natural framework in which to quantify the communication process between neurons is information theory ...
... associated with the manner in which information from sensory systems is encoded in a neural system. Understanding neural codes is a major issue in neuroscience 关2兴. It is generally agreed that the natural framework in which to quantify the communication process between neurons is information theory ...
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... striatum, while including initial performance as covariates in the model. No correlation was found between striatum volumes and initial total scores in both groups, suggesting that initial performance of the task was not correlated with striatum volumes. However, striatum volumes significantly predi ...
... striatum, while including initial performance as covariates in the model. No correlation was found between striatum volumes and initial total scores in both groups, suggesting that initial performance of the task was not correlated with striatum volumes. However, striatum volumes significantly predi ...
Neural Networks
... that relate to the same object. • For example, letters that make up a word or words that make up a sentence. • Sequences can vary in length. This is a challenge. • How many inputs should there be for varying length inputs ? ...
... that relate to the same object. • For example, letters that make up a word or words that make up a sentence. • Sequences can vary in length. This is a challenge. • How many inputs should there be for varying length inputs ? ...
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... bounds on this velocity. The first b u n d has already been discussed. If we define v ( c 0 ) as the velocity of a plane wave or, equivalently, of a circular wave with infinite radius, then for a circular wave of finite radius we have u(r) < u(o3). To derive a lower bound, we begin by considering a ...
... bounds on this velocity. The first b u n d has already been discussed. If we define v ( c 0 ) as the velocity of a plane wave or, equivalently, of a circular wave with infinite radius, then for a circular wave of finite radius we have u(r) < u(o3). To derive a lower bound, we begin by considering a ...
Migration - RinaldiPsych
... After migration, cells align themselves with others cells and form structures Cell-adhesion molecules (CAMs) ...
... After migration, cells align themselves with others cells and form structures Cell-adhesion molecules (CAMs) ...
Control of movement direction - Cognitive Science Research Group
... of movement, or only the kinematics transformations (see also discussion in Section 3.1.1). If cortical planning were to take place in motor (joint or muscles) coordinates, it would have the advantage of taking into account the physical constraints but it may result in movements that are not adequat ...
... of movement, or only the kinematics transformations (see also discussion in Section 3.1.1). If cortical planning were to take place in motor (joint or muscles) coordinates, it would have the advantage of taking into account the physical constraints but it may result in movements that are not adequat ...
ASL: Hierarchy, Composition, Heterogeneity, and Multi
... ASL basic mechanisms can be contrasted to other models. Multiple ports have been utilized in such computational models as CSP [Hoare 1978] and Port Automata [Steenstrup et al. 1983]. On the other hand, most concurrent object-oriented models follow a single port model, in particular the actor model [ ...
... ASL basic mechanisms can be contrasted to other models. Multiple ports have been utilized in such computational models as CSP [Hoare 1978] and Port Automata [Steenstrup et al. 1983]. On the other hand, most concurrent object-oriented models follow a single port model, in particular the actor model [ ...