Axon Terminal Polarization Induced by Weak Uniform
... Figure 1. Terminal polarization of a cable with a bend in a uniform electric field along the direction of the first segment, uniform distribution of internal passive parameters and constant diameter. The terminal polarization varies as function of L1, L0 and θ. For L1>4 the terminal polarization alw ...
... Figure 1. Terminal polarization of a cable with a bend in a uniform electric field along the direction of the first segment, uniform distribution of internal passive parameters and constant diameter. The terminal polarization varies as function of L1, L0 and θ. For L1>4 the terminal polarization alw ...
Memory, Learning, and Synaptic Plasticity
... cells, called mossy fibers because of their elaborate axon terminals, form synapses with the dendrites of CA3 pyramidal neurons, while the axons of CA3 pyramidal neurons form extensive recurrent connections via association fibers (that is, they synapse onto CA3 pyramidal neurons, including themselve ...
... cells, called mossy fibers because of their elaborate axon terminals, form synapses with the dendrites of CA3 pyramidal neurons, while the axons of CA3 pyramidal neurons form extensive recurrent connections via association fibers (that is, they synapse onto CA3 pyramidal neurons, including themselve ...
Bi150 (2005)
... know and must long postpone the discovery of why this memory made me so happy) immediately the old grey house upon the street, where her room was, rose up like a stage set to attach itself to the little pavilion opening on to the garden which had been built out behind it for my parents (the isolated ...
... know and must long postpone the discovery of why this memory made me so happy) immediately the old grey house upon the street, where her room was, rose up like a stage set to attach itself to the little pavilion opening on to the garden which had been built out behind it for my parents (the isolated ...
2 Brain and Classical Neural Networks
... the postsynaptic are summed up. The amplitude of individual PSP’s is about 1 mV, thus quite a number of inputs is required to reach the ‘firing’ threshold, of tens of mV. Otherwise the postsynaptic neuron remains in the resting or none state. The cycle-time of a neuron, i.e., the time from the emissi ...
... the postsynaptic are summed up. The amplitude of individual PSP’s is about 1 mV, thus quite a number of inputs is required to reach the ‘firing’ threshold, of tens of mV. Otherwise the postsynaptic neuron remains in the resting or none state. The cycle-time of a neuron, i.e., the time from the emissi ...
wood ant (formica lugubris zett.)
... 1. The corpora pedunculata of the wood ant (Formica lugubris Zett.) contain densely packed neuron perikarya which are separated by ultrathin glial sheaths. 2. These glial sheaths are occasionally interrupted by round holes with an average surface area of 2.64/z 2. The holes are designated glial wind ...
... 1. The corpora pedunculata of the wood ant (Formica lugubris Zett.) contain densely packed neuron perikarya which are separated by ultrathin glial sheaths. 2. These glial sheaths are occasionally interrupted by round holes with an average surface area of 2.64/z 2. The holes are designated glial wind ...
Roles for miRNAs in Timing Developmental Progression Within
... a certain level of maturity or connectivity. However, additional regulatory mechanisms likely influence miRNA levels in neurons because only a subset of miRNAs appear to be subject to this rapid turnover, and only a subset of neurons display this increased rate of miRNA turnover. Target mRNA levels ...
... a certain level of maturity or connectivity. However, additional regulatory mechanisms likely influence miRNA levels in neurons because only a subset of miRNAs appear to be subject to this rapid turnover, and only a subset of neurons display this increased rate of miRNA turnover. Target mRNA levels ...
Expression of Neurofilament Subunits in Neurons of the Central and
... and Sternberger, 1983).Other explanations,suchaslimitations in the methods used to identify NF subunits in situ, are also possible(Hickey et al., 1983). Immunohistochemical studiesof the in situ distribution of NF subunitshave appeared(Dahl, 1983;Goldstein et al., 1983; Gown and Vogel, 1984; Hickey ...
... and Sternberger, 1983).Other explanations,suchaslimitations in the methods used to identify NF subunits in situ, are also possible(Hickey et al., 1983). Immunohistochemical studiesof the in situ distribution of NF subunitshave appeared(Dahl, 1983;Goldstein et al., 1983; Gown and Vogel, 1984; Hickey ...
Implications in absence epileptic seizures
... Spindle oscillations, which are generated by thalamic circuits, can be gradually transformed into spike-and-wave discharges and all manipulations that promote or antagonize spindles have the same effect on spike-and-wave seizures (Kostopoulos et al., 1981a, 1981b; McLachlan et al., 1984) ...
... Spindle oscillations, which are generated by thalamic circuits, can be gradually transformed into spike-and-wave discharges and all manipulations that promote or antagonize spindles have the same effect on spike-and-wave seizures (Kostopoulos et al., 1981a, 1981b; McLachlan et al., 1984) ...
Inhibitory Neurotransmitters are the nervous system`s “off switches
... Aspartic Acid, also known as aspartate, is an excitatory neurotransmitter in the brainstem and spinal cord. Aspartic acid is the excitatory counterpart to glycine, an inhibitory neurotransmitter. Low levels have been linked to feelings of fatigue and low mood, whereas high levels have been linked t ...
... Aspartic Acid, also known as aspartate, is an excitatory neurotransmitter in the brainstem and spinal cord. Aspartic acid is the excitatory counterpart to glycine, an inhibitory neurotransmitter. Low levels have been linked to feelings of fatigue and low mood, whereas high levels have been linked t ...
Chapter 2: The Biological Basis of Behavior
... Which of the following statements is true of the activity of neurons? a. The nerve impulse fades in strength as it travels through the neuron. b. Transmission of information at synapses occurs by means of direct physical contact between the nerve cells. c. The size and speed of the neural impulse is ...
... Which of the following statements is true of the activity of neurons? a. The nerve impulse fades in strength as it travels through the neuron. b. Transmission of information at synapses occurs by means of direct physical contact between the nerve cells. c. The size and speed of the neural impulse is ...
Search Department of Pediatrics, Harvard Medical School The
... astroglia play a significant role in epilepsy (26, 27, 28). This theory allows for synchronous neuronal firing involving the domains of many astrocytes acting as a syncytium. A calcium wave produced by millions of astrocytes acting as a syncytium would, at the wave's termination, be expected to resu ...
... astroglia play a significant role in epilepsy (26, 27, 28). This theory allows for synchronous neuronal firing involving the domains of many astrocytes acting as a syncytium. A calcium wave produced by millions of astrocytes acting as a syncytium would, at the wave's termination, be expected to resu ...
PDF Mynark - American Kinesiology Association
... efficiency between the Ia afferent fibers and the alpha motoneurons. Currently there are several noninvasive methodologies for assessing presynaptic inhibition of Ia fibers in humans (see reviews by Rudomin & Schmidt, 1999; Stein, 1995). With respect to aging, recent evidence has suggested differenc ...
... efficiency between the Ia afferent fibers and the alpha motoneurons. Currently there are several noninvasive methodologies for assessing presynaptic inhibition of Ia fibers in humans (see reviews by Rudomin & Schmidt, 1999; Stein, 1995). With respect to aging, recent evidence has suggested differenc ...
An Introduction to the ANS and Higher
... Form branching networks of telodendria instead of synaptic terminals • Telodendria form sympathetic varicosities • Resemble string of pearls • Swollen segment packed with neurotransmitter vesicles • Pass along or near surface of effector cells • No specialized postsynaptic membranes © 2012 Pearson E ...
... Form branching networks of telodendria instead of synaptic terminals • Telodendria form sympathetic varicosities • Resemble string of pearls • Swollen segment packed with neurotransmitter vesicles • Pass along or near surface of effector cells • No specialized postsynaptic membranes © 2012 Pearson E ...
Growth arrest specific gene 7 is associated with schizophrenia and
... Fig. 1 Gas7 influenced development stages of cortical neurons through F-BAR domain in vitro. a Immunoblotting revealed the Gas7 levels in the cerebral cortex (left) and hippocampus (right) during development. b Schematic representation of domain organization of Gas7. c Morphological characterization ...
... Fig. 1 Gas7 influenced development stages of cortical neurons through F-BAR domain in vitro. a Immunoblotting revealed the Gas7 levels in the cerebral cortex (left) and hippocampus (right) during development. b Schematic representation of domain organization of Gas7. c Morphological characterization ...
FINE STRUCTURE OF NERVE FIBERS AND GROWTH CONES OF
... a n d coated vesicles were present. M i c r o t u b u l e s were rare; a few are shown in the figure. Neurofilaments were n o t visible. All three levels of this portion a p p e a r e d similar. Parts of area c (Fig. 4) were seen in four sections. This spread-out region resembled t h a t in a in t ...
... a n d coated vesicles were present. M i c r o t u b u l e s were rare; a few are shown in the figure. Neurofilaments were n o t visible. All three levels of this portion a p p e a r e d similar. Parts of area c (Fig. 4) were seen in four sections. This spread-out region resembled t h a t in a in t ...
The Neurological Examination
... Primary Sensory Modalities Reflect Input from sensory receptors, sensory nerves, spinal cord, brainstem, through to the level of the Thalamus. Cortical Sensory Modalities Reflect Processing by the Somatosensory Cortex (post-central gyrus) ...
... Primary Sensory Modalities Reflect Input from sensory receptors, sensory nerves, spinal cord, brainstem, through to the level of the Thalamus. Cortical Sensory Modalities Reflect Processing by the Somatosensory Cortex (post-central gyrus) ...
The Muscular/Skeletal System
... • Muscle cells do not arise out of the connective tissue cells but do arise out of the same layer of the fetus, the mesoderm. They form bundles of long lines of cells. If these lines were teased apart the muscles would not be able to work. They need to be aligned and subject to neural stimulation. ...
... • Muscle cells do not arise out of the connective tissue cells but do arise out of the same layer of the fetus, the mesoderm. They form bundles of long lines of cells. If these lines were teased apart the muscles would not be able to work. They need to be aligned and subject to neural stimulation. ...
The Neurological Examination
... Primary Sensory Modalities Reflect Input from sensory receptors, sensory nerves, spinal cord, brainstem, through to the level of the Thalamus. Cortical Sensory Modalities Reflect Processing by the Somatosensory Cortex (post-central gyrus) ...
... Primary Sensory Modalities Reflect Input from sensory receptors, sensory nerves, spinal cord, brainstem, through to the level of the Thalamus. Cortical Sensory Modalities Reflect Processing by the Somatosensory Cortex (post-central gyrus) ...
Long-Term Depression in Identified Stellate Neurons of Juvenile Rat
... After formation of whole cell recordings, we quickly (usually in ⬍2 min) recorded the voltage responses by injecting currents from ⫹0.1 to ⫺1 nA at an interval of ⫺0.1 nA (Fig. 1C) in current clamp. In this condition, we can still observe nice initial sag response but prevented the contamination of ...
... After formation of whole cell recordings, we quickly (usually in ⬍2 min) recorded the voltage responses by injecting currents from ⫹0.1 to ⫺1 nA at an interval of ⫺0.1 nA (Fig. 1C) in current clamp. In this condition, we can still observe nice initial sag response but prevented the contamination of ...
Focal local field potential (LFP) signature of the single
... connections from single thalamocortical (TC) neurons impinging onto neuronal populations in cortical layer 4 (Swadlow et al., 2002) as illustrated schematically in Figure 1A. Layer 4 is considered to be the major gateway into cortex of sensory information relayed by the thalamus (Bruno and Sakmann, ...
... connections from single thalamocortical (TC) neurons impinging onto neuronal populations in cortical layer 4 (Swadlow et al., 2002) as illustrated schematically in Figure 1A. Layer 4 is considered to be the major gateway into cortex of sensory information relayed by the thalamus (Bruno and Sakmann, ...
Basal Ganglia
... cerebral cortex. They receive information from the frontal cortex about behavior that is being planned for a particular situation. In turn, the basal ganglia affect activity in the frontal cortex through a series of neural projections that ultimately go back up to the same cortical areas from which ...
... cerebral cortex. They receive information from the frontal cortex about behavior that is being planned for a particular situation. In turn, the basal ganglia affect activity in the frontal cortex through a series of neural projections that ultimately go back up to the same cortical areas from which ...
CV - The Solomon H Snyder Department of Neuroscience
... expressed broadly, caused lethality. The reason for this was unknown. This publication described the solution to this problem. To determine which region of QF was the cause of lethality, we decided to generate chimeric QF proteins that swapped QF domains with GAL4 domains. We separated the QF protei ...
... expressed broadly, caused lethality. The reason for this was unknown. This publication described the solution to this problem. To determine which region of QF was the cause of lethality, we decided to generate chimeric QF proteins that swapped QF domains with GAL4 domains. We separated the QF protei ...