Pietro Berkes , Richard E. Turner , József Fiser
... the state of the other neurons and the current input: using a Langevin dynamics: ...
... the state of the other neurons and the current input: using a Langevin dynamics: ...
An Evolutionary Framework for Replicating Neurophysiological Data
... In this paper, we propose a two-pronged framework for tuning the parameters of spiking neural networks. First, we achieve a drastic reduction in the dimensionality of the parameter space by using a learning mechanism as an indirect encoding method for automatically adapting the weights of neural con ...
... In this paper, we propose a two-pronged framework for tuning the parameters of spiking neural networks. First, we achieve a drastic reduction in the dimensionality of the parameter space by using a learning mechanism as an indirect encoding method for automatically adapting the weights of neural con ...
File
... Synapses serve to connect neurons, enabling neurons to communicate by passing signals between them. Neurons control these functions by passing signals across the synapse from one neuron to the next. These signals dictate whether the receiving neuron is activated. The summaries of the diagrams should ...
... Synapses serve to connect neurons, enabling neurons to communicate by passing signals between them. Neurons control these functions by passing signals across the synapse from one neuron to the next. These signals dictate whether the receiving neuron is activated. The summaries of the diagrams should ...
Document
... – Not all-or-none – Changes the probability of the postsynaptic neuron firing • Positive voltage shift – excitatory PSP • Negative voltage shift – inhibitory PSP ...
... – Not all-or-none – Changes the probability of the postsynaptic neuron firing • Positive voltage shift – excitatory PSP • Negative voltage shift – inhibitory PSP ...
neurons and the nervous system
... Receive messages from other neurons and send them to the cell body Cell Body or Soma The control center of the neuron. Function: Directs impulses from the dendrites to the axon. Nucleus Control center of the Soma. Function: Tells the soma what to do. ...
... Receive messages from other neurons and send them to the cell body Cell Body or Soma The control center of the neuron. Function: Directs impulses from the dendrites to the axon. Nucleus Control center of the Soma. Function: Tells the soma what to do. ...
One of key missions of the BRAIN Initiative is “Demonstrating
... demonstrated that the neurons expressing Agouti-gene related protein (AgRP neurons) promote feeding through GABAergic projections to a variety of other brain regions. Prevalent research efforts mainly focus on peptidergic neurons. However, peptidergic neurons only account for a small percentage of t ...
... demonstrated that the neurons expressing Agouti-gene related protein (AgRP neurons) promote feeding through GABAergic projections to a variety of other brain regions. Prevalent research efforts mainly focus on peptidergic neurons. However, peptidergic neurons only account for a small percentage of t ...
What are Computational Neuroscience and Neuroinformatics
... are, unlike most artificial neural networks, sparse and most likely, specific. It is not known how information is transmitted through such sparsely connected networks. It is also unknown what the computational functions, if any, of these specific connectivity pattern are. The interactions of neurons ...
... are, unlike most artificial neural networks, sparse and most likely, specific. It is not known how information is transmitted through such sparsely connected networks. It is also unknown what the computational functions, if any, of these specific connectivity pattern are. The interactions of neurons ...
Regulation of respiration
... Central and peripheral chemosensory neurons that respond to increased carbon dioxide levels in the blood are also stimulated by the acidity from carbonic acid acid, so they “inform” the ventilation control center in the medulla to increase the rate of ventilation. ...
... Central and peripheral chemosensory neurons that respond to increased carbon dioxide levels in the blood are also stimulated by the acidity from carbonic acid acid, so they “inform” the ventilation control center in the medulla to increase the rate of ventilation. ...
Nervous tissues
... rapidly. A nerve is made up of many nerve cell fibres (neurons) bound together by connective tissue. A sheath of dense connective tissue, the epineurium surrounds the nerve. This sheath penetrates the nerve to form the perineurium which surrounds bundles of nerve fibres. blood vessels of various siz ...
... rapidly. A nerve is made up of many nerve cell fibres (neurons) bound together by connective tissue. A sheath of dense connective tissue, the epineurium surrounds the nerve. This sheath penetrates the nerve to form the perineurium which surrounds bundles of nerve fibres. blood vessels of various siz ...
Neurons `predict` restorative effects of drinking water well before they
... water. But why does cold water seem to quench your thirst so much more rapidly?" To answer the first question, mice that went without food for a night were given food the following morning but no water. SFO neurons lit up almost immediately as the mice began to eat. Mice who were allowed both food a ...
... water. But why does cold water seem to quench your thirst so much more rapidly?" To answer the first question, mice that went without food for a night were given food the following morning but no water. SFO neurons lit up almost immediately as the mice began to eat. Mice who were allowed both food a ...
Grasping the Ungraspable: How do motor actions and motor metaphors interact?
... Abstract: The discovery of mirror neurons has established that the same neuronal populations are active during action execution, and during action observation (Gallese et al., 1996). The neural areas active while observing an action (e.g., kicking) are also active during the processing of concrete a ...
... Abstract: The discovery of mirror neurons has established that the same neuronal populations are active during action execution, and during action observation (Gallese et al., 1996). The neural areas active while observing an action (e.g., kicking) are also active during the processing of concrete a ...
Language within our grasp:
... – They fire with presentation of the action from many perspective, near and far – They are sensitive to the apparent purpose of the action • In this way, they represent the actions and (thereby) represent a common thread of understanding between an actor and an observer • A shared link of understand ...
... – They fire with presentation of the action from many perspective, near and far – They are sensitive to the apparent purpose of the action • In this way, they represent the actions and (thereby) represent a common thread of understanding between an actor and an observer • A shared link of understand ...
Biology 4 Practice Exam Chapter 16 – Autonomic Nervous System 1
... neuroeffector junctions are classified as a. cholinergic b. adrenergic c. norephinephric d. nonsecretory e. none of the above 8. The sympathetic division of the ANS includes which of the following? a. three segmentally arranged sympathetic chains b. paired collateral ganglia anterior to the spinal c ...
... neuroeffector junctions are classified as a. cholinergic b. adrenergic c. norephinephric d. nonsecretory e. none of the above 8. The sympathetic division of the ANS includes which of the following? a. three segmentally arranged sympathetic chains b. paired collateral ganglia anterior to the spinal c ...
Barnes TD, Kubota Y, Hu D, Jin DZ, Graybiel AM. Activity of striatal
... task-irrelevant firing was suppressed, then rebounded, and then was suppressed again. These changing spike activity patterns were highly correlated with changes in behavioural performance. We propose that these changes in task representation in cortico-basal ganglia circuits represent neural equival ...
... task-irrelevant firing was suppressed, then rebounded, and then was suppressed again. These changing spike activity patterns were highly correlated with changes in behavioural performance. We propose that these changes in task representation in cortico-basal ganglia circuits represent neural equival ...
Here - Statistical Analysis of Neuronal Data
... Many studies have attempted to examine the rhythmic modulation of the firing of individual neurons from extracellular recordings. In the rodent hippocampus, neurons are known to have a strong relationship to theta rhythm (6-12 Hz) oscillations in the local field potential and to be intrinsically rhy ...
... Many studies have attempted to examine the rhythmic modulation of the firing of individual neurons from extracellular recordings. In the rodent hippocampus, neurons are known to have a strong relationship to theta rhythm (6-12 Hz) oscillations in the local field potential and to be intrinsically rhy ...
Neurons and Neurotransmitters
... receptors on the postsynaptic membrane. • There are a number of types of receptors for different neurotransmitters. • This binding eventually brings about a change in the electrical state of the postsynaptic cell either exciting or inhibiting it. ...
... receptors on the postsynaptic membrane. • There are a number of types of receptors for different neurotransmitters. • This binding eventually brings about a change in the electrical state of the postsynaptic cell either exciting or inhibiting it. ...
Local Copy - Synthetic Neurobiology Group
... dopamine cells in the ventral tegmental area that serves as part of the brain-reward system. Using this technique, the researchers discovered distinct pattern of dopamine cell activation that seemed to be able to disrupt alcohol-drinking behavior. Scientists at the California Institute of Technology ...
... dopamine cells in the ventral tegmental area that serves as part of the brain-reward system. Using this technique, the researchers discovered distinct pattern of dopamine cell activation that seemed to be able to disrupt alcohol-drinking behavior. Scientists at the California Institute of Technology ...
DM-Lecture-10 - WordPress.com
... axon via the cell body •Axon connects to dendrites via synapses – Synapses vary in strength – Synapses may be excitatory or inhibitory ...
... axon via the cell body •Axon connects to dendrites via synapses – Synapses vary in strength – Synapses may be excitatory or inhibitory ...
Hybrots - Computing Science and Mathematics
... standard, disembodied in vitro approach. We have reembodied our dissociated neuronal networks by allowing patterns in the neural activity to control the behavior of simulated animals or animats (Meyer & Wilson 1991). These include animats that exist on the computer screen, interacting with a virtual ...
... standard, disembodied in vitro approach. We have reembodied our dissociated neuronal networks by allowing patterns in the neural activity to control the behavior of simulated animals or animats (Meyer & Wilson 1991). These include animats that exist on the computer screen, interacting with a virtual ...
neuron
... Neuron Communication With Other Neurons • In order for one neuron to communicate with another it must pass a junction or gap called the synapse between the axon which is sending the signal and the dendrite which is receiving the signal. • At the ends of the axon, the terminal buttons release neur ...
... Neuron Communication With Other Neurons • In order for one neuron to communicate with another it must pass a junction or gap called the synapse between the axon which is sending the signal and the dendrite which is receiving the signal. • At the ends of the axon, the terminal buttons release neur ...
Neural oscillation
Neural oscillation is rhythmic or repetitive neural activity in the central nervous system. Neural tissue can generate oscillatory activity in many ways, driven either by mechanisms within individual neurons or by interactions between neurons. In individual neurons, oscillations can appear either as oscillations in membrane potential or as rhythmic patterns of action potentials, which then produce oscillatory activation of post-synaptic neurons. At the level of neural ensembles, synchronized activity of large numbers of neurons can give rise to macroscopic oscillations, which can be observed in the electroencephalogram (EEG). Oscillatory activity in groups of neurons generally arises from feedback connections between the neurons that result in the synchronization of their firing patterns. The interaction between neurons can give rise to oscillations at a different frequency than the firing frequency of individual neurons. A well-known example of macroscopic neural oscillations is alpha activity.Neural oscillations were observed by researchers as early as 1924 (by Hans Berger). More than 50 years later, intrinsic oscillatory behavior was encountered in vertebrate neurons, but its functional role is still not fully understood. The possible roles of neural oscillations include feature binding, information transfer mechanisms and the generation of rhythmic motor output. Over the last decades more insight has been gained, especially with advances in brain imaging. A major area of research in neuroscience involves determining how oscillations are generated and what their roles are. Oscillatory activity in the brain is widely observed at different levels of observation and is thought to play a key role in processing neural information. Numerous experimental studies support a functional role of neural oscillations; a unified interpretation, however, is still lacking.