I study the neural circuits that move bodies
... A neuron uses this ability to rapidly transmit information down its axon in the form of a positive-feedback loop we call an action potential (sometime abbreviated to AP). Axons express voltage-gated sodium channels (VGSCs) that open when the membrane potential is made more positive (“depolarized”, s ...
... A neuron uses this ability to rapidly transmit information down its axon in the form of a positive-feedback loop we call an action potential (sometime abbreviated to AP). Axons express voltage-gated sodium channels (VGSCs) that open when the membrane potential is made more positive (“depolarized”, s ...
Nervous System I - Union County College
... The function of a neuron is to transmit information from one part of the body to another. • This is done in the form of electrical impulses. • An impulse arrives at the dendrite • When the impulse is strong enough, it depolarizes the membrane and the impulse is transmitted along the axon • When the ...
... The function of a neuron is to transmit information from one part of the body to another. • This is done in the form of electrical impulses. • An impulse arrives at the dendrite • When the impulse is strong enough, it depolarizes the membrane and the impulse is transmitted along the axon • When the ...
motor systems
... small motor units in the sense that one motor neuron may supply less than 100 muscle fibers; the eye muscles have even smaller motor units. The junction between the terminal branches of the axon and the muscle fiber, i.e. the neuromuscular junction, is known as the motor end-plate. When the action p ...
... small motor units in the sense that one motor neuron may supply less than 100 muscle fibers; the eye muscles have even smaller motor units. The junction between the terminal branches of the axon and the muscle fiber, i.e. the neuromuscular junction, is known as the motor end-plate. When the action p ...
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... Photo-inactivation of RIBEYE, an important presynaptic protein at ribbon synapses in the retina, reveals a new role for ribbons in the vesicle priming process. Synaptic ribbons are enigmatic specializations at presynaptic active zones in neurons that encode sensory information with small, graded vol ...
... Photo-inactivation of RIBEYE, an important presynaptic protein at ribbon synapses in the retina, reveals a new role for ribbons in the vesicle priming process. Synaptic ribbons are enigmatic specializations at presynaptic active zones in neurons that encode sensory information with small, graded vol ...
Histology of Normal Tissues - SM Group| Open Access eBooks
... Stratified squamous keratinized epithelium comprises several layers with cells of various forms: cuboidal or columnar in the basal layer, polygonal in the intermediate layer, and flat at the surface. Depending on the proportion of keratin filaments in the surface layer, this epithelium is classified ...
... Stratified squamous keratinized epithelium comprises several layers with cells of various forms: cuboidal or columnar in the basal layer, polygonal in the intermediate layer, and flat at the surface. Depending on the proportion of keratin filaments in the surface layer, this epithelium is classified ...
Chapter 28: Nervous
... Figure 28.10A Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings ...
... Figure 28.10A Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings ...
Neural Darwinism
... molecule expression and neural structure by correlated neural activity itself. Under these influences, morphoregulatory molecules affect cell motion and process extension, leading to enormous local neuroatomical variation at the finest ramifications of axons and dendrites. In certain regions, there ...
... molecule expression and neural structure by correlated neural activity itself. Under these influences, morphoregulatory molecules affect cell motion and process extension, leading to enormous local neuroatomical variation at the finest ramifications of axons and dendrites. In certain regions, there ...
Signal Integration in Thalamus: Labeled Lines Go
... processing to the next. The second way is to merge different lines of sensory information—through convergent synaptic wiring, in order to create new, often more elaborate perceptual representations. A classic example of this occurs in the visual system where the outputs of ‘‘spot detector’’ neurons ...
... processing to the next. The second way is to merge different lines of sensory information—through convergent synaptic wiring, in order to create new, often more elaborate perceptual representations. A classic example of this occurs in the visual system where the outputs of ‘‘spot detector’’ neurons ...
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... Neocortical pyramidal neurons have a spike initiation zone in the apical dendrite [10,11,12,14,19]. The dendritic spike generated in this location is composed of an initial fast component that has been shown to be mediated by voltage-sensitive Na+ channels followed by a slower Ca2+-dependent compone ...
... Neocortical pyramidal neurons have a spike initiation zone in the apical dendrite [10,11,12,14,19]. The dendritic spike generated in this location is composed of an initial fast component that has been shown to be mediated by voltage-sensitive Na+ channels followed by a slower Ca2+-dependent compone ...
the nervous system
... such as those performed by the skeletal muscles. The somatic nervous system also includes the special nerve fibres that help keep the body in touch with its surroundings, ...
... such as those performed by the skeletal muscles. The somatic nervous system also includes the special nerve fibres that help keep the body in touch with its surroundings, ...
Presence of vesicular glutamate transporter-2 in
... male rats increases serum GH levels (Mason et al., 1983) and similar stimulatory effects have also been observed in other species (Estienne et al., 1989; Shahab et al., 1993). Some of the actions of glutamate on the somatotropic axis may also be exerted at the hypophysial level. Ionotropic and metab ...
... male rats increases serum GH levels (Mason et al., 1983) and similar stimulatory effects have also been observed in other species (Estienne et al., 1989; Shahab et al., 1993). Some of the actions of glutamate on the somatotropic axis may also be exerted at the hypophysial level. Ionotropic and metab ...
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... cognitive processing than they are generally given credit for. The general picture that emerges has circuits of excitatory neurons responding to stimuli and generating motor responses, with a network of inhibitory neurons controlling these excitatory networks and the responses they generate. A puzzl ...
... cognitive processing than they are generally given credit for. The general picture that emerges has circuits of excitatory neurons responding to stimuli and generating motor responses, with a network of inhibitory neurons controlling these excitatory networks and the responses they generate. A puzzl ...
Filamentous contacts: the ultrastructure and three
... presence of electron-dense material along the cytoplasmic aspect of the axonal plasma membrane and of intercellular dense material and extended the class of filamentous contacts to include similar specializations between two dendrites, at which paramembranous dense material and neurofilaments were s ...
... presence of electron-dense material along the cytoplasmic aspect of the axonal plasma membrane and of intercellular dense material and extended the class of filamentous contacts to include similar specializations between two dendrites, at which paramembranous dense material and neurofilaments were s ...
Neuregulin-1/ErbB4 signaling regulates Kv4.2-mediated - AJP-Cell
... AJP-Cell Physiol • doi:10.1152/ajpcell.00041.2013 • www.ajpcell.org ...
... AJP-Cell Physiol • doi:10.1152/ajpcell.00041.2013 • www.ajpcell.org ...
Properties of ventromedial hypothalamic neurons with axons
... difference, DLF responses were blocked and only the CG stimulation yielded an antidromic response. In this time sequence, the CG-evoked potential passed down the DLF site just prior to the DLF stimulation, and the refractory period following the CG-evoked excitation caused failure of the DLF respons ...
... difference, DLF responses were blocked and only the CG stimulation yielded an antidromic response. In this time sequence, the CG-evoked potential passed down the DLF site just prior to the DLF stimulation, and the refractory period following the CG-evoked excitation caused failure of the DLF respons ...
The role of Pitx3 in survival of midbrain dopaminergic neurons
... (Smidt et al., 2004a, b). As a consequence of the neuronal loss in the SNc, connections to the dorsal striatum are virtually absent resulting in a dramatic decrease of dopamine. Initial behavioural analysis of ak mice revealed inconsistent reports on their motor impairments. Although it was stated t ...
... (Smidt et al., 2004a, b). As a consequence of the neuronal loss in the SNc, connections to the dorsal striatum are virtually absent resulting in a dramatic decrease of dopamine. Initial behavioural analysis of ak mice revealed inconsistent reports on their motor impairments. Although it was stated t ...
Taste, Smell, and Touch: Lecture Notes
... complete picture of how smell is encoded by the brain o different areas of the mucosa are sensitive to different types of odorants o smells appear to be organized spatially in the olfactory bulb (similar smells are grouped together) o an odotope is a group of odorants that share some chemical featur ...
... complete picture of how smell is encoded by the brain o different areas of the mucosa are sensitive to different types of odorants o smells appear to be organized spatially in the olfactory bulb (similar smells are grouped together) o an odotope is a group of odorants that share some chemical featur ...
Glutamate-like immunoreactivity in axon terminals from the olfactory
... revealed anterogradely labelled terminals making asymmetric synaptic contacts on dendrites in the piriform cortex which contained high levels of glutamate as assessed by quantification. These results further support a role for glutamate as a neurotransmitter in the efferent pathway of the rat olfact ...
... revealed anterogradely labelled terminals making asymmetric synaptic contacts on dendrites in the piriform cortex which contained high levels of glutamate as assessed by quantification. These results further support a role for glutamate as a neurotransmitter in the efferent pathway of the rat olfact ...
Membrane Potential Fluctuations in Neural Integrator
... 4.2 Schematic of experimental setup .....................................................................36 4.3 Picture of a brain clamp ...................................................................................40 5.1 Comparison of sharp vs. whole-cell intracellular recordings ............. ...
... 4.2 Schematic of experimental setup .....................................................................36 4.3 Picture of a brain clamp ...................................................................................40 5.1 Comparison of sharp vs. whole-cell intracellular recordings ............. ...
Realistic synaptic inputs for model neural networks
... set e q d to the excitatory ne.The two -yes intersect at rates corresponding to a d e n t state, E = 0, an unstable intermediate state and a stable self-sustainedfiring state for whidt the firing rate is essentially the maximum srnglenevron rate. The firing rate for this state is unrealistically hig ...
... set e q d to the excitatory ne.The two -yes intersect at rates corresponding to a d e n t state, E = 0, an unstable intermediate state and a stable self-sustainedfiring state for whidt the firing rate is essentially the maximum srnglenevron rate. The firing rate for this state is unrealistically hig ...
exuberance in the development of cortical
... functional properties of cortical neurons, such as their OCULAR DOMINANCE or their selectivity for the orientation or colour of objects. Development of the thalamocortical pathway requires the delivery of thalamic axons along a complex three-dimensional route to the cortex, the arrival of thalamic a ...
... functional properties of cortical neurons, such as their OCULAR DOMINANCE or their selectivity for the orientation or colour of objects. Development of the thalamocortical pathway requires the delivery of thalamic axons along a complex three-dimensional route to the cortex, the arrival of thalamic a ...
human anatomy - WordPress.com
... • Relays info by way of afferent fibers to the CNS • Efferent fibers relay info from CNS to muscles and glands • Divided into two parts: - 12 pairs of cranial nerves - 31 pairs of spinal nerves ...
... • Relays info by way of afferent fibers to the CNS • Efferent fibers relay info from CNS to muscles and glands • Divided into two parts: - 12 pairs of cranial nerves - 31 pairs of spinal nerves ...
Human Physiology - Maryville University
... a functional connection between a neuron (presynaptic) & another cell (postsynaptic) There are chemical & electrical synapses Synaptic transmission in chemicals is via neurotransmitters (NT) Electricals are rare in NS ...
... a functional connection between a neuron (presynaptic) & another cell (postsynaptic) There are chemical & electrical synapses Synaptic transmission in chemicals is via neurotransmitters (NT) Electricals are rare in NS ...
Virus-delivered small RNA silencing sustains strength in
... demonstrating, as expected, that mutant damage developed directly within motor neurons contributes in an important way to toxicity. Although no evidence currently is available to support direct damage by mutant SOD1 within muscle cells, we cannot exclude that the viral-delivered siRNA used here migh ...
... demonstrating, as expected, that mutant damage developed directly within motor neurons contributes in an important way to toxicity. Although no evidence currently is available to support direct damage by mutant SOD1 within muscle cells, we cannot exclude that the viral-delivered siRNA used here migh ...