MOLECULAR BIOLOGY OF SPEMANN`S ORGANIZER AND
... The “Organizer” experiment (Spemann and Mangold, 1924) is the best known experiment in embryology. It has led, more than any other, to the current view that development occurs through a cascade of cell-cell interactions. If the dorsal lip (the site where gastrulation starts) of the blastopore is tra ...
... The “Organizer” experiment (Spemann and Mangold, 1924) is the best known experiment in embryology. It has led, more than any other, to the current view that development occurs through a cascade of cell-cell interactions. If the dorsal lip (the site where gastrulation starts) of the blastopore is tra ...
Modeling the role of mossy fiber input to CA3 objectives: extended model of Cerasti and Treves
... square meter) searching for food. In these tasks, the principal cells in the hippocampus demonstrate spatially-specific firing patterns within a single environment [8]. Typically a pyramidal cell in the CA1 or CA3 subregion has a single ”place field,” a connected area in which the maximum firing rat ...
... square meter) searching for food. In these tasks, the principal cells in the hippocampus demonstrate spatially-specific firing patterns within a single environment [8]. Typically a pyramidal cell in the CA1 or CA3 subregion has a single ”place field,” a connected area in which the maximum firing rat ...
The neural basis for combinatorial coding in a cortical population response
... in which each cell responds independently to its sensory inputs. Mathematically, this means that the probability of responses from the population can be decomposed as a product of probabilities for each individual cell, as in Equation 1 below, where these single-cell properties have been estimated d ...
... in which each cell responds independently to its sensory inputs. Mathematically, this means that the probability of responses from the population can be decomposed as a product of probabilities for each individual cell, as in Equation 1 below, where these single-cell properties have been estimated d ...
Lecture 15
... Leaky integrate and fire neurons Encode each individual spike Time is represented exactly Each spike has an associated time The timing of recent incoming spikes determines whether a neuron will fire • Computationally expensive • Can we do almost as well without encoding every single spike? ...
... Leaky integrate and fire neurons Encode each individual spike Time is represented exactly Each spike has an associated time The timing of recent incoming spikes determines whether a neuron will fire • Computationally expensive • Can we do almost as well without encoding every single spike? ...
Chapter 11 Nervous System parts 1 and 2
... Electrical impulses carried along the length of axons ...
... Electrical impulses carried along the length of axons ...
10.4. What follows from the fact that some neurons we consider
... weights) positions in the centers of these clusters, whereas the adjacent neurons will „cover“ the neighboring clusters. Such situation is presented on the fig. 10.15, on which green dots represent input signals whereas red stars correspond with the location (in the same coordinate system) of vector ...
... weights) positions in the centers of these clusters, whereas the adjacent neurons will „cover“ the neighboring clusters. Such situation is presented on the fig. 10.15, on which green dots represent input signals whereas red stars correspond with the location (in the same coordinate system) of vector ...
Nervous System PPTA
... • Schwann cells (neurolemmocytes) • Surround peripheral nerve fibers and form myelin sheaths • Vital to regeneration of damaged peripheral nerve fibers ...
... • Schwann cells (neurolemmocytes) • Surround peripheral nerve fibers and form myelin sheaths • Vital to regeneration of damaged peripheral nerve fibers ...
Joint maps for orientation, eye, and direction preference in a self
... learning, and have treated lateral connections as fixed. Also, although ocular dominance (OD) has been modeled in conjunction with orientation, joint OR/OD/DR models have not yet been published. Including OD is potentially crucial, because it is known to interact with the orientation map [3]. Finall ...
... learning, and have treated lateral connections as fixed. Also, although ocular dominance (OD) has been modeled in conjunction with orientation, joint OR/OD/DR models have not yet been published. Including OD is potentially crucial, because it is known to interact with the orientation map [3]. Finall ...
PDF
... genome. The two parts can be recombined in a single fly line (see below). Using this, we co-expressed both halves of split-Cre within the same cells in embryos under the control of a GAL4 driver. By further illuminating the embryos with blue light, we activated photoinducible split-Cre. To calibrate ...
... genome. The two parts can be recombined in a single fly line (see below). Using this, we co-expressed both halves of split-Cre within the same cells in embryos under the control of a GAL4 driver. By further illuminating the embryos with blue light, we activated photoinducible split-Cre. To calibrate ...
Unit One: Introduction to Physiology: The Cell and General Physiology
... Fig. 56.7 The left side of this figure shows the basic neuronal circuit of the cerebellum, with the excitatory neurons shown in red, and the inhibitory neuron (Purkinje cell) shown in black. ...
... Fig. 56.7 The left side of this figure shows the basic neuronal circuit of the cerebellum, with the excitatory neurons shown in red, and the inhibitory neuron (Purkinje cell) shown in black. ...
Live imaging of multicolor-labeled cells in Drosophila
... genome. The two parts can be recombined in a single fly line (see below). Using this, we co-expressed both halves of split-Cre within the same cells in embryos under the control of a GAL4 driver. By further illuminating the embryos with blue light, we activated photoinducible split-Cre. To calibrate ...
... genome. The two parts can be recombined in a single fly line (see below). Using this, we co-expressed both halves of split-Cre within the same cells in embryos under the control of a GAL4 driver. By further illuminating the embryos with blue light, we activated photoinducible split-Cre. To calibrate ...
Learning sensory maps with real-world stimuli in real time using a
... Publisher Item Identifier S 1045-9227(02)02405-0. ...
... Publisher Item Identifier S 1045-9227(02)02405-0. ...
Modulation of cell surface architecture in gastrulating chick embryo
... treatment with either exogenous FGF or suramin were studied. Hensen’s node⎯Cells of the Hensen’s node of a control embryo were arranged in a uniform sheet (Fig. 2A-C). Cells exhibited various types of surface projections. Vesicular projections described earlier as ‘glass-bell-like formations’20, app ...
... treatment with either exogenous FGF or suramin were studied. Hensen’s node⎯Cells of the Hensen’s node of a control embryo were arranged in a uniform sheet (Fig. 2A-C). Cells exhibited various types of surface projections. Vesicular projections described earlier as ‘glass-bell-like formations’20, app ...
Review (11/01/16)
... carrying this information. – Labeled-line – separate pathways (neurons). There are neurons that only sense itch and others that only sense pain. – Occlusion – There are neurons that code for pain and others that code for itch and pain (labeled-line like), but in the presence of significant pain and ...
... carrying this information. – Labeled-line – separate pathways (neurons). There are neurons that only sense itch and others that only sense pain. – Occlusion – There are neurons that code for pain and others that code for itch and pain (labeled-line like), but in the presence of significant pain and ...
Release of chemical transmitters from cell bodies and dendrites of
... release that occurs at synaptic terminals, single action potentials or trains at 1 Hz fail to evoke transport of vesicles to the cell membrane. By contrast, following trains of stimuli at 20 Hz, about 100 vesicle clusters move to different places on the plasma membrane, where they fuse. The exocytos ...
... release that occurs at synaptic terminals, single action potentials or trains at 1 Hz fail to evoke transport of vesicles to the cell membrane. By contrast, following trains of stimuli at 20 Hz, about 100 vesicle clusters move to different places on the plasma membrane, where they fuse. The exocytos ...
Presentation materials - Brain Dynamics Laboratory
... • Bursts have higher signal-to-noise ratio than single spikes. Burst threshold is higher than spike threshold, i.e., generation of bursts requires stronger inputs. • Bursts can be used for selective communication if the postsynaptic cells have subthreshold oscillations of membrane potential. Such ce ...
... • Bursts have higher signal-to-noise ratio than single spikes. Burst threshold is higher than spike threshold, i.e., generation of bursts requires stronger inputs. • Bursts can be used for selective communication if the postsynaptic cells have subthreshold oscillations of membrane potential. Such ce ...
Goldman nottebohm neuronal production migration diff in adult female canary brain pnas 1983
... The primary telencephalic song-control nucleus, HVc (hyperstriatum ventrale, pars caudalis) (1, 2), of adult female canaries doubles in size in response to androgen treatment as these birds develop male-like song (3). We became interested in the possibility that addition of neurons might contribute ...
... The primary telencephalic song-control nucleus, HVc (hyperstriatum ventrale, pars caudalis) (1, 2), of adult female canaries doubles in size in response to androgen treatment as these birds develop male-like song (3). We became interested in the possibility that addition of neurons might contribute ...
Adult Neural Stem Cells and Repair of the Adult
... ABSTRACT Neural stem cells are present not only in the developing nervous systems, but also in the adult central nervous system of mammals, including humans. The mature central nervous system has been traditionally regarded as an unfavorable environment for the regeneration of damaged axons of matur ...
... ABSTRACT Neural stem cells are present not only in the developing nervous systems, but also in the adult central nervous system of mammals, including humans. The mature central nervous system has been traditionally regarded as an unfavorable environment for the regeneration of damaged axons of matur ...