Glial Cells: The Other Cells of the Nervous System
... factors, neurotransmitters (such as glutamate) and other neuroactive molecules. Binding of the appropriate ligands to these receptors can cause ionic changes or activation of a secondary messenger system. In this context, changes in Ca++ levels in astrocytes have been studied extensively. Astrocyte ...
... factors, neurotransmitters (such as glutamate) and other neuroactive molecules. Binding of the appropriate ligands to these receptors can cause ionic changes or activation of a secondary messenger system. In this context, changes in Ca++ levels in astrocytes have been studied extensively. Astrocyte ...
Brainwaves ("40 Hz") Research
... Professor John Jefferys - Neuroscience Unit Introduction Single unit recordings in vivo have revealed much about the events or features to which neurons respond. Individual neurons do not detect their preferred sensory features in isolation. They form part of neuronal networks whose emergent propert ...
... Professor John Jefferys - Neuroscience Unit Introduction Single unit recordings in vivo have revealed much about the events or features to which neurons respond. Individual neurons do not detect their preferred sensory features in isolation. They form part of neuronal networks whose emergent propert ...
Preparation for the Dissertation report
... It is reasonable to consider that modeling the brain is fundamental for conceiving engineering systems with similar functionalities. In fact, as stated by Haykin [2], “the brain is the living proof that fault tolerant parallel computing is not only physically possible, but also fast and powerful. It ...
... It is reasonable to consider that modeling the brain is fundamental for conceiving engineering systems with similar functionalities. In fact, as stated by Haykin [2], “the brain is the living proof that fault tolerant parallel computing is not only physically possible, but also fast and powerful. It ...
Optical probing of neuronal ensemble activity
... or second messenger concentrations) dynamically change as well and may significantly influence network dynamics [2]. To understand the principles of microcircuit operation we need to identify coactive ensembles within local neuronal populations and reveal their dynamic properties when they are perfo ...
... or second messenger concentrations) dynamically change as well and may significantly influence network dynamics [2]. To understand the principles of microcircuit operation we need to identify coactive ensembles within local neuronal populations and reveal their dynamic properties when they are perfo ...
Plasticity in the Nervous System of Adult Hydra. III. Conversion of
... base to the apex of the ectoderm, indicating that they were sensory cells (Fig. 5e). The numbers of VLI+ neurons in the hypostome (Fig. 5~) and tentacles (Fig. 5b) were substantial and more than those found in the body column, though less than those found in these regions in normal animals (Fig. 2a, ...
... base to the apex of the ectoderm, indicating that they were sensory cells (Fig. 5e). The numbers of VLI+ neurons in the hypostome (Fig. 5~) and tentacles (Fig. 5b) were substantial and more than those found in the body column, though less than those found in these regions in normal animals (Fig. 2a, ...
Spindle-Like Thalamocortical Synchronization in a Rat Brain Slice
... Extracellular field potentials were recorded with ACSF-filled electrodes (resistance ⫽ 2– 8 M⍀) positioned under visual control in cortex and thalamus [VB and/or reticular nucleus (RTN)]. Signals were fed to high-impedance amplifiers, processed through secondstage amplifiers with filtering capabilit ...
... Extracellular field potentials were recorded with ACSF-filled electrodes (resistance ⫽ 2– 8 M⍀) positioned under visual control in cortex and thalamus [VB and/or reticular nucleus (RTN)]. Signals were fed to high-impedance amplifiers, processed through secondstage amplifiers with filtering capabilit ...
RESEARCH LETTERS 3 Marwood RP. Disappearance of
... a third (figure). A small subset of cells (five of 258 examined) were slightly larger (10-18 m) with many short filamentous projections. 39.9% of the DAT* neurons were found in the putamen, 11.6% in the caudate nucleus, 16.3% in the globus pallidus externa, 6.2% in the globus pallidus interna, and 2 ...
... a third (figure). A small subset of cells (five of 258 examined) were slightly larger (10-18 m) with many short filamentous projections. 39.9% of the DAT* neurons were found in the putamen, 11.6% in the caudate nucleus, 16.3% in the globus pallidus externa, 6.2% in the globus pallidus interna, and 2 ...
Synapses and Synaptic Transmission
... INTRODUCTION TO SYNAPSE: The CNS contains more than 100 billion neurons. Incoming signals enter the neuron through synapses located mostly on the neuronal dendrites, but also on the cell body. For different types of neurons, there may be only a few hundred or as many as 200,000 such synaptic connec ...
... INTRODUCTION TO SYNAPSE: The CNS contains more than 100 billion neurons. Incoming signals enter the neuron through synapses located mostly on the neuronal dendrites, but also on the cell body. For different types of neurons, there may be only a few hundred or as many as 200,000 such synaptic connec ...
Short-Term Synaptic Plasticity Orchestrates the Response of Pyramidal
... provide a feature upon which the relative timing of activity between cell classes can be examined. The neurons examined in Silberberg et al. (2004) were classified by the dynamics of the synapse received from the bursting layer V pyramidal population and comprised: layer V pyramidal cells receiving ...
... provide a feature upon which the relative timing of activity between cell classes can be examined. The neurons examined in Silberberg et al. (2004) were classified by the dynamics of the synapse received from the bursting layer V pyramidal population and comprised: layer V pyramidal cells receiving ...
Spring 2002
... healthy individuals, BCI experiments were also performed with patients with an amputated upper limb, spinal cord injury, and Amyotrophic Lateral Sclerosis (ALS). The Neil Squire Foundation in Canada is a non-profit organization whose purpose is to create opportunities for independence for individua ...
... healthy individuals, BCI experiments were also performed with patients with an amputated upper limb, spinal cord injury, and Amyotrophic Lateral Sclerosis (ALS). The Neil Squire Foundation in Canada is a non-profit organization whose purpose is to create opportunities for independence for individua ...
Letter to Neuroscience
... Atlantic University Institutional Animal Care and Use Committee and conform to all Federal regulations and National Institutes of Health Guidelines for the Care and Use of Laboratory Animals. All e¡orts were made to minimize the number of animals used and their su¡ering. Experimental procedures have ...
... Atlantic University Institutional Animal Care and Use Committee and conform to all Federal regulations and National Institutes of Health Guidelines for the Care and Use of Laboratory Animals. All e¡orts were made to minimize the number of animals used and their su¡ering. Experimental procedures have ...
Anatomy Review
... • When activated, receptors on the postsynaptic neuron open ion channels. • The movement of ions across the neuronal membrane creates an electrical signal called a synaptic potential. • Synaptic potentials vary in amplitude and travel only a short distance. • Thus they are very different from action ...
... • When activated, receptors on the postsynaptic neuron open ion channels. • The movement of ions across the neuronal membrane creates an electrical signal called a synaptic potential. • Synaptic potentials vary in amplitude and travel only a short distance. • Thus they are very different from action ...
Neurons from radial glia: the consequences of asymmetric inheritance
... however, neither of these genes is expressed signi®cantly in the nervous system, and loss-of-function analyses suggest that they do not instruct a glial identity as they do in Drosophila [37,38]. In contrast, the function of other genes, such as that encoding the Notch receptor, appears to be better ...
... however, neither of these genes is expressed signi®cantly in the nervous system, and loss-of-function analyses suggest that they do not instruct a glial identity as they do in Drosophila [37,38]. In contrast, the function of other genes, such as that encoding the Notch receptor, appears to be better ...
Linking reward expectation to behavior in the basal ganglia
... light of recent theoretical work. For tasks in which the detection, discrimination or identification of a sensory stimulus leads directly to an action (such as an eye or arm movement), accuracy and response times can be accounted for by assuming that the sensory stimulus causes some (noisy) signal i ...
... light of recent theoretical work. For tasks in which the detection, discrimination or identification of a sensory stimulus leads directly to an action (such as an eye or arm movement), accuracy and response times can be accounted for by assuming that the sensory stimulus causes some (noisy) signal i ...
Complexity in Neuronal Networks
... years, until relatively recently most workers studying large cell assemblies in the vertebrate brain, both experimentalists and theoreticians, have continued to assume that circuit dynamics depend exclusively on synaptic connectivity and synaptic strength. This view has changed in the last five year ...
... years, until relatively recently most workers studying large cell assemblies in the vertebrate brain, both experimentalists and theoreticians, have continued to assume that circuit dynamics depend exclusively on synaptic connectivity and synaptic strength. This view has changed in the last five year ...
Identification of Basolateral Amygdala Projection Cells and
... Guide for the Care and Use of Laboratory Animals (Department of Health and Human Services). Adult male cats (2.5–3.5 kg) were preanesthetized with a mixture of ketamine and xylazine [15 and 2 mg/kg, administered intramuscularly (im)] and artificially ventilated with a mixture of ambient air, oxygen, ...
... Guide for the Care and Use of Laboratory Animals (Department of Health and Human Services). Adult male cats (2.5–3.5 kg) were preanesthetized with a mixture of ketamine and xylazine [15 and 2 mg/kg, administered intramuscularly (im)] and artificially ventilated with a mixture of ambient air, oxygen, ...
MARMORATAl - Journal of Neuroscience
... antigens are first expressed and the order in which they are expressed by different cells or tissues. Three of the mAbs produced by Zipser and McKay (Zipser, B., and R. McKay (1981) Nature 289: 549-554) were screened: Lan3-1, Lan3-5, and Lan3-6. Each mAb shows a different pattern of labeling in the ...
... antigens are first expressed and the order in which they are expressed by different cells or tissues. Three of the mAbs produced by Zipser and McKay (Zipser, B., and R. McKay (1981) Nature 289: 549-554) were screened: Lan3-1, Lan3-5, and Lan3-6. Each mAb shows a different pattern of labeling in the ...
Two-photon imaging and analysis of neural network dynamics
... highly promising for optically resolving whole sets of spike trains within local neuronal populations, reaching a temporal resolution almost comparable to electrical recordings. Finally, various other scanning approaches are still being explored. One direction is the use of multi-focal approaches, w ...
... highly promising for optically resolving whole sets of spike trains within local neuronal populations, reaching a temporal resolution almost comparable to electrical recordings. Finally, various other scanning approaches are still being explored. One direction is the use of multi-focal approaches, w ...
Induction of c-fos Expression in Hypothalamic Magnocellular
... increasein oxytocin neuronal firing during lactation. Thus, either the pattern of activity during lactation is not suitable for the induction of C-$X or an appropriate synaptically driven mechanismis not operating. C&s transcription can be induced in cells by a number of secondmessenger systems,incl ...
... increasein oxytocin neuronal firing during lactation. Thus, either the pattern of activity during lactation is not suitable for the induction of C-$X or an appropriate synaptically driven mechanismis not operating. C&s transcription can be induced in cells by a number of secondmessenger systems,incl ...
BIOL 273 Midterm #1 Notes
... Dendrites are thin, branched processes that receive incoming information from neighboring cells ...
... Dendrites are thin, branched processes that receive incoming information from neighboring cells ...
The 18th European Conference on Artificial - CEUR
... and angle orientations. These simple cells are location specific. In the CABot3 V1 and V1Lines subnets, FLIF neurons have been connected to replicate this behaviour. V1 and V1Lines were split for engineering convenience. Weighted connections feed activation from on-centre and off-centre cells in the ...
... and angle orientations. These simple cells are location specific. In the CABot3 V1 and V1Lines subnets, FLIF neurons have been connected to replicate this behaviour. V1 and V1Lines were split for engineering convenience. Weighted connections feed activation from on-centre and off-centre cells in the ...