the medial division of the medial geniculate body of the cat
... radiate and tufted neurons are more frequent, the medial division is intermediate in a sense-not that the degree of radiate or tufted dendritic branching is less well developed, but neither type of cell predominates. Moreover, all of the cell types are overlapping in distribution, although the large ...
... radiate and tufted neurons are more frequent, the medial division is intermediate in a sense-not that the degree of radiate or tufted dendritic branching is less well developed, but neither type of cell predominates. Moreover, all of the cell types are overlapping in distribution, although the large ...
A Gaussian Approach to Neural Nets with Multiple Memory Domains
... behaviour of isolated and non-isolated neural that of isolated networks [4]. Neural nets are nets with chemical markers and high assumed to be constructed of discrete sets of connectivity, and the relationship between randomly interconnected neurons with similar structure, as expressed in patterns o ...
... behaviour of isolated and non-isolated neural that of isolated networks [4]. Neural nets are nets with chemical markers and high assumed to be constructed of discrete sets of connectivity, and the relationship between randomly interconnected neurons with similar structure, as expressed in patterns o ...
Predicting Spiking Activities in DLS Neurons with Linear
... The current study identified subpopulations of neurons that primarily correlate with different feature modalities. The proportion of neurons that are identified to be correlated with head position history is higher (32 out of 47) when compared to traditional methods (less than 25%) which require cat ...
... The current study identified subpopulations of neurons that primarily correlate with different feature modalities. The proportion of neurons that are identified to be correlated with head position history is higher (32 out of 47) when compared to traditional methods (less than 25%) which require cat ...
The Beautiful Brain - Weisman Art Museum
... continuous network that others had seen was actually made up of discrete cells that were separated by gaps, called synapses. With the advent of the electron microscope in the 1950s, which magnified images to a much greater extent than the light microscopes used by Cajal, the Neuron Doctrine was conc ...
... continuous network that others had seen was actually made up of discrete cells that were separated by gaps, called synapses. With the advent of the electron microscope in the 1950s, which magnified images to a much greater extent than the light microscopes used by Cajal, the Neuron Doctrine was conc ...
Neuronal Calcium Signaling Review
... 1996). Calcium release in cardiac cells is mediated by the type 2 RYR, which is the predominant isoform found in the brain. In cardiac cells, these RYR2 channels are closely apposed to the Ca21 channels in the plasma membrane across the 15 nm junctional gap that separates the sarcolemma from the sar ...
... 1996). Calcium release in cardiac cells is mediated by the type 2 RYR, which is the predominant isoform found in the brain. In cardiac cells, these RYR2 channels are closely apposed to the Ca21 channels in the plasma membrane across the 15 nm junctional gap that separates the sarcolemma from the sar ...
input output - Brian Nils Lundstrom
... observations have shown that the firing rate responses of some neurons are very sensitive to input fluctuations, while responses of others are not [18, 21]. Interestingly, we found that commonly used neuron models (single-compartment, biophysical models) do not replicate this diversity with their st ...
... observations have shown that the firing rate responses of some neurons are very sensitive to input fluctuations, while responses of others are not [18, 21]. Interestingly, we found that commonly used neuron models (single-compartment, biophysical models) do not replicate this diversity with their st ...
Dual inhibition of the dactyl opener muscle in lobster
... Wiens, 1989). This type of restricted innervation pattern contrasts sharply with the arrangement in the brachyuran crab species Eriphia, where CI innervates all the fibers of the dactyl opener muscle (Wiens et al., 1988). In the lobster Homarus americanus, Wiens confirmed dual inhibitory innervation ...
... Wiens, 1989). This type of restricted innervation pattern contrasts sharply with the arrangement in the brachyuran crab species Eriphia, where CI innervates all the fibers of the dactyl opener muscle (Wiens et al., 1988). In the lobster Homarus americanus, Wiens confirmed dual inhibitory innervation ...
Organization of a Vertebrate Cardiac Ganglion: A Correlated
... 1976).The vagus nervescontaining the preganglionicparasympathetic fibers run acrossthe septum to innervate clustersof postganglionicneurons.There are 2 neuron types in the mudpuppy cardiac ganglion: large, 35-SO-pm-diameter postganglionic parasympathetic neurons(principal cells), and smaller, 15-30- ...
... 1976).The vagus nervescontaining the preganglionicparasympathetic fibers run acrossthe septum to innervate clustersof postganglionicneurons.There are 2 neuron types in the mudpuppy cardiac ganglion: large, 35-SO-pm-diameter postganglionic parasympathetic neurons(principal cells), and smaller, 15-30- ...
Exam 5 Study Guide-sp2016
... Explain the structure of an idealized neuron, including the functions of all the parts: cell body, dendrites, dendritic spines, axon hillock, axon, axon collateral, myelin sheath, neurofibril node (node of Ranvier), axon terminal, synaptic knobs. Be able to identify these parts on a diagram or model ...
... Explain the structure of an idealized neuron, including the functions of all the parts: cell body, dendrites, dendritic spines, axon hillock, axon, axon collateral, myelin sheath, neurofibril node (node of Ranvier), axon terminal, synaptic knobs. Be able to identify these parts on a diagram or model ...
Synaptic Targets of Medial Septal Projections in the Hippocampus
... or dendrites immunopositive for interneuron cell-type molecular markers, such as parvalbumin, calbindin, calretinin, N-terminal EFhand calcium-binding protein 1, cholecystokinin, reelin, or a combination of these molecules. Electron microscopic observations revealed septal boutons forming axosomatic ...
... or dendrites immunopositive for interneuron cell-type molecular markers, such as parvalbumin, calbindin, calretinin, N-terminal EFhand calcium-binding protein 1, cholecystokinin, reelin, or a combination of these molecules. Electron microscopic observations revealed septal boutons forming axosomatic ...
What Is the Nervous System?
... • Sensory Neurons Information about your external and internal environment is gathered by sensory neurons through your sense organs or other parts of your body. • Interneurons Located only in the brain and spinal cord, interneurons pass impulses from one neuron to another. • Motor Neurons Motor neur ...
... • Sensory Neurons Information about your external and internal environment is gathered by sensory neurons through your sense organs or other parts of your body. • Interneurons Located only in the brain and spinal cord, interneurons pass impulses from one neuron to another. • Motor Neurons Motor neur ...
What Is the Nervous System?
... • Sensory Neurons Information about your external and internal environment is gathered by sensory neurons through your sense organs or other parts of your body. • Interneurons Located only in the brain and spinal cord, interneurons pass impulses from one neuron to another. • Motor Neurons Motor neur ...
... • Sensory Neurons Information about your external and internal environment is gathered by sensory neurons through your sense organs or other parts of your body. • Interneurons Located only in the brain and spinal cord, interneurons pass impulses from one neuron to another. • Motor Neurons Motor neur ...
Section 11.3
... • Sensory Neurons Information about your external and internal environment is gathered by sensory neurons through your sense organs or other parts of your body. • Interneurons Located only in the brain and spinal cord, interneurons pass impulses from one neuron to another. • Motor Neurons Motor neur ...
... • Sensory Neurons Information about your external and internal environment is gathered by sensory neurons through your sense organs or other parts of your body. • Interneurons Located only in the brain and spinal cord, interneurons pass impulses from one neuron to another. • Motor Neurons Motor neur ...
Optical recording of electrical activity in intact neuronal networks
... neuroscience is how simple processes in neurons can generate cognitive functions and form complex memories like those experienced by humans and animals. In principle, if one were able to record from all the neurons in a network involved in a given behavior, it would be possible to reconstruct the r ...
... neuroscience is how simple processes in neurons can generate cognitive functions and form complex memories like those experienced by humans and animals. In principle, if one were able to record from all the neurons in a network involved in a given behavior, it would be possible to reconstruct the r ...
Somatic regions Limbic These functionally distinct
... 5) At the base of the midbrain (ventral side) one finds a fiber bundle that shows great differences in relative size in different species. Give examples. What are the fibers called and where do they originate? 8) A decussating group of axons called the brachium conjunctivum also varies greatly in ...
... 5) At the base of the midbrain (ventral side) one finds a fiber bundle that shows great differences in relative size in different species. Give examples. What are the fibers called and where do they originate? 8) A decussating group of axons called the brachium conjunctivum also varies greatly in ...
Document
... through the stylomastoid foramen to the lateral aspect of the face • Mixed nerve with five major branches • Motor functions include facial expression, and the transmittal of autonomic impulses to lacrimal and salivary glands • Sensory function is taste from the anterior two-thirds of the tongue ...
... through the stylomastoid foramen to the lateral aspect of the face • Mixed nerve with five major branches • Motor functions include facial expression, and the transmittal of autonomic impulses to lacrimal and salivary glands • Sensory function is taste from the anterior two-thirds of the tongue ...
The largest growth cones in the animal kingdom
... the absence of trophic factors but they show little neurite outgrowth. Although the identity of these trophic factors is unknown they are added to the media in 2 different ways. For Aplysia, the trophic factors are added to the media by inclusion of up to 50% hemolymph. For Lymnaea and Helisoma, tro ...
... the absence of trophic factors but they show little neurite outgrowth. Although the identity of these trophic factors is unknown they are added to the media in 2 different ways. For Aplysia, the trophic factors are added to the media by inclusion of up to 50% hemolymph. For Lymnaea and Helisoma, tro ...
UNC-55, an Orphan Nuclear Hormone Receptor, Orchestrates
... of genetic material create the synaptic diversity present in even the simplest nervous systems? Several lines of evidence suggest that the genetic programs are less diverse than would be predicted by the multitude of synaptic patterns. For example, in the development of layer 5 neurons in the mammal ...
... of genetic material create the synaptic diversity present in even the simplest nervous systems? Several lines of evidence suggest that the genetic programs are less diverse than would be predicted by the multitude of synaptic patterns. For example, in the development of layer 5 neurons in the mammal ...
Neutrophil Contribution in Facilitating Optic Nerve Regeneration
... types, but unfortunately did not examine the responsible mechanisms. Why one RGC type preferentially regenerates is unclear, but it is possible that different types of RGCs express different levels or combinations of receptors for oncomodulin or other unidentified regeneration-inducing factors. In t ...
... types, but unfortunately did not examine the responsible mechanisms. Why one RGC type preferentially regenerates is unclear, but it is possible that different types of RGCs express different levels or combinations of receptors for oncomodulin or other unidentified regeneration-inducing factors. In t ...
Frequency decoding of periodically timed action potentials through
... neurons that encompasses about an octave. Frequency discrimination by such a network is accordingly restricted to a spectral band of less than an octave, and many networks, each with a distinct range of temporal delays, are required to cover a broader frequency range. Where might such structures exi ...
... neurons that encompasses about an octave. Frequency discrimination by such a network is accordingly restricted to a spectral band of less than an octave, and many networks, each with a distinct range of temporal delays, are required to cover a broader frequency range. Where might such structures exi ...
Identified Serotonergic Neurons LCBI and RCBI in the Cerebral
... cells in a manner similar to their response to tail shock produces reliable facilitation of the EPSP from LE sensory cells to follower cells. CBl neurons were identified as described above. An LE sensory cell and a follower neuron (usually an LFS motor neuron) were then impaled. Follower neurons wer ...
... cells in a manner similar to their response to tail shock produces reliable facilitation of the EPSP from LE sensory cells to follower cells. CBl neurons were identified as described above. An LE sensory cell and a follower neuron (usually an LFS motor neuron) were then impaled. Follower neurons wer ...
PDF
... 2000). The parameter sets used are reported in Tables 1 through 3 (see the appendix). The files used to implement voltage-dependent mechanisms, as indicated in the tables, are freely available online from the NEURON web page (http://www.neuron.yale.edu). For the cell as a whole, we tune the paramete ...
... 2000). The parameter sets used are reported in Tables 1 through 3 (see the appendix). The files used to implement voltage-dependent mechanisms, as indicated in the tables, are freely available online from the NEURON web page (http://www.neuron.yale.edu). For the cell as a whole, we tune the paramete ...
Pacemaker Potentials for the Periodic Burst Discharge in the Heart
... (a) "mammalian heart" type, (b) "slow generator" type, (c) "slow grower" type, and (d) "slow deficient" type. Since axons which are far from the somata do not produce slow potentials, the soma and dendrites must be where the slow potentials are generated. Hyperpolarization impedes generation of the ...
... (a) "mammalian heart" type, (b) "slow generator" type, (c) "slow grower" type, and (d) "slow deficient" type. Since axons which are far from the somata do not produce slow potentials, the soma and dendrites must be where the slow potentials are generated. Hyperpolarization impedes generation of the ...
Nineteen
... alongside the axons of the gelatinosa cells. Ttains of impulses coming through the larger {ibers are thought to cause synaptic inhibition of the tract cells concerned with nociception. This postulated mechanism, known as the gate control theory ofpain (Fig. I9-2), enables the neurons in the spinal c ...
... alongside the axons of the gelatinosa cells. Ttains of impulses coming through the larger {ibers are thought to cause synaptic inhibition of the tract cells concerned with nociception. This postulated mechanism, known as the gate control theory ofpain (Fig. I9-2), enables the neurons in the spinal c ...
Membrane Properties Underlying the Firing of Neurons in the Avian
... synaptic potentials could arrive in NM neurons at rates as high as 800-1200 Hz. The rapid arrival of large synaptic potentials is likely to cause a sustained, high level of depolarization that could inactivate the sodium conductance underlying the action potential (Hodgkin and Huxley, 1952). In orde ...
... synaptic potentials could arrive in NM neurons at rates as high as 800-1200 Hz. The rapid arrival of large synaptic potentials is likely to cause a sustained, high level of depolarization that could inactivate the sodium conductance underlying the action potential (Hodgkin and Huxley, 1952). In orde ...
Axon
.svg?width=300)
An axon (from Greek ἄξων áxōn, axis), also known as a nerve fibre, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body. The function of the axon is to transmit information to different neurons, muscles and glands. In certain sensory neurons (pseudounipolar neurons), such as those for touch and warmth, the electrical impulse travels along an axon from the periphery to the cell body, and from the cell body to the spinal cord along another branch of the same axon. Axon dysfunction causes many inherited and acquired neurological disorders which can affect both the peripheral and central neurons.An axon is one of two types of protoplasmic protrusions that extrude from the cell body of a neuron, the other type being dendrites. Axons are distinguished from dendrites by several features, including shape (dendrites often taper while axons usually maintain a constant radius), length (dendrites are restricted to a small region around the cell body while axons can be much longer), and function (dendrites usually receive signals while axons usually transmit them). All of these rules have exceptions, however.Some types of neurons have no axon and transmit signals from their dendrites. No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimes consists of several regions that function more or less independently of each other. Most axons branch, in some cases very profusely.Axons make contact with other cells—usually other neurons but sometimes muscle or gland cells—at junctions called synapses. At a synapse, the membrane of the axon closely adjoins the membrane of the target cell, and special molecular structures serve to transmit electrical or electrochemical signals across the gap. Some synaptic junctions appear partway along an axon as it extends—these are called en passant (""in passing"") synapses. Other synapses appear as terminals at the ends of axonal branches. A single axon, with all its branches taken together, can innervate multiple parts of the brain and generate thousands of synaptic terminals.