Hans Spemann (1869-1941) - The Embryo Project Encyclopedia
... development of tissues or a structure is affected by closely situated tissues was first clearly demonstrated by Spemann in 1901 in the development of frog [32] embryo eyes. When embryonic eyes begin to develop, they start as optic vesicles in the mesoderm [33] and bulge outward on each side of the e ...
... development of tissues or a structure is affected by closely situated tissues was first clearly demonstrated by Spemann in 1901 in the development of frog [32] embryo eyes. When embryonic eyes begin to develop, they start as optic vesicles in the mesoderm [33] and bulge outward on each side of the e ...
mGluR-dependent persistent firing in entorhinal cortex layer III neurons SYNAPTIC MECHANISMS Motoharu Yoshida,
... Persistent firing is believed to be a crucial mechanism for memory function including working memory. Recent in vivo and in vitro findings suggest an involvement of metabotropic glutamate receptors (mGluRs) in persistent firing. Using whole-cell patch-recording techniques in a rat entorhinal cortex ...
... Persistent firing is believed to be a crucial mechanism for memory function including working memory. Recent in vivo and in vitro findings suggest an involvement of metabotropic glutamate receptors (mGluRs) in persistent firing. Using whole-cell patch-recording techniques in a rat entorhinal cortex ...
PATHWAYS FOR EMOTION : INTERACTIONS OF PREFRONTAL AND THE RHESUS MONKEY
... Olmos, 1990). Disruption of these pathways seriously a¡ects emotional expression, as exempli¢ed by the inability of patients with orbitofrontal lesions to respond autonomically in emotional situations (Damasio et al., 1990; for review see Kling and Steklis, 1976). Even though such patients have inta ...
... Olmos, 1990). Disruption of these pathways seriously a¡ects emotional expression, as exempli¢ed by the inability of patients with orbitofrontal lesions to respond autonomically in emotional situations (Damasio et al., 1990; for review see Kling and Steklis, 1976). Even though such patients have inta ...
α-Synuclein and dopamine at the crossroads of Parkinson`s disease
... a two-fold increase in evoked dopamine release. With no change in DAT activity or striatal dopamine content [53], these findings have been attributed to an increase in dopamine releasability, possibly due to changes in vesicle fusion or a redistribution of vesicles between reserve vesicle pools and ...
... a two-fold increase in evoked dopamine release. With no change in DAT activity or striatal dopamine content [53], these findings have been attributed to an increase in dopamine releasability, possibly due to changes in vesicle fusion or a redistribution of vesicles between reserve vesicle pools and ...
Learning-related postburst afterhyperpolarization reduction in CA1
... Transgenic mice with a constitutively active form of CREB have recently been shown to have CA1 pyramidal neurons with significantly reduced AHPs (28). Interestingly, EBC is also significantly impaired by disruption of the cAMP/PKA pathway in the cerebellum (29), a structure known to be critically in ...
... Transgenic mice with a constitutively active form of CREB have recently been shown to have CA1 pyramidal neurons with significantly reduced AHPs (28). Interestingly, EBC is also significantly impaired by disruption of the cAMP/PKA pathway in the cerebellum (29), a structure known to be critically in ...
Precise visuotopic organization of the blind spot representation in
... which 10 empirical values, equally spaced between 20 and 120 ms, were tested. For each latency value, we created an intersected map using the responses to the eight directions of stimulus motion (see Fig. 1, C and D, for examples of intersected maps). The value that led to the highest response peak, ...
... which 10 empirical values, equally spaced between 20 and 120 ms, were tested. For each latency value, we created an intersected map using the responses to the eight directions of stimulus motion (see Fig. 1, C and D, for examples of intersected maps). The value that led to the highest response peak, ...
View/Open - DukeSpace
... have been the salient questions driving SEF research in the past decade. The mystery is whether the SEF does something important even if it is unconcerned with the details of making individual movements. From the first studies of Schlag and Schlag-Rey it was recognized that the SEF might play a spec ...
... have been the salient questions driving SEF research in the past decade. The mystery is whether the SEF does something important even if it is unconcerned with the details of making individual movements. From the first studies of Schlag and Schlag-Rey it was recognized that the SEF might play a spec ...
Cerebral hemisphere regulation of motivated
... In summary, there are three major classes of inputs to the motor system: (a) sensory, which mediate reflex behavior; (b) cortical, which mediate cognition and voluntary behavior; and (c) behavioral state control (Fig. 1). Turning now to the hierarchical organization of the motor system itself, the c ...
... In summary, there are three major classes of inputs to the motor system: (a) sensory, which mediate reflex behavior; (b) cortical, which mediate cognition and voluntary behavior; and (c) behavioral state control (Fig. 1). Turning now to the hierarchical organization of the motor system itself, the c ...
Dynamics of embryo axis elongation in amniotes vs. anamniotes
... a reorganization of its cells in order to form and position the three germ layers, which will later form the organs of the adult. It is also during this process that the embryo transforms from a simple mass of undifferentiated cells and begins acquiring the shape of an organism with three main embry ...
... a reorganization of its cells in order to form and position the three germ layers, which will later form the organs of the adult. It is also during this process that the embryo transforms from a simple mass of undifferentiated cells and begins acquiring the shape of an organism with three main embry ...
(2000). Cerebral hemisphere regulation of motivated behavior.
... In summary, there are three major classes of inputs to the motor system: (a) sensory, which mediate reflex behavior; (b) cortical, which mediate cognition and voluntary behavior; and (c) behavioral state control (Fig. 1). Turning now to the hierarchical organization of the motor system itself, the c ...
... In summary, there are three major classes of inputs to the motor system: (a) sensory, which mediate reflex behavior; (b) cortical, which mediate cognition and voluntary behavior; and (c) behavioral state control (Fig. 1). Turning now to the hierarchical organization of the motor system itself, the c ...
Neurobiological Mechanisms Underlying Oestradiol Negative and
... GnRH neurone activity in brain slices prepared at different times of day was examined using extracellular recordings. This is a critical step because the mechanisms underlying the increase in GnRH release that leads to the surge in species in which this hormone has been directly measured (2–5) may b ...
... GnRH neurone activity in brain slices prepared at different times of day was examined using extracellular recordings. This is a critical step because the mechanisms underlying the increase in GnRH release that leads to the surge in species in which this hormone has been directly measured (2–5) may b ...
Developmental Cell
... will arise. Most of what we know about this is derived from studies in Drosophila and Xenopus. Both species rely on localization of maternal components to specific regions of the egg cytoplasm, such that they are differentially inherited by subsets of daughter cells, which thus acquire different fat ...
... will arise. Most of what we know about this is derived from studies in Drosophila and Xenopus. Both species rely on localization of maternal components to specific regions of the egg cytoplasm, such that they are differentially inherited by subsets of daughter cells, which thus acquire different fat ...
Implication of novel neurotransmitter systems in the regulation of
... In rats, the central regulation of the reproductive axis is carried out by about 10001600 GnRH neurons (7, 8). These neurons ontogenetically originate outside the brain in the olfactory placodes (9) and migrate to their final location during the embryonic life. In addition to these data from mice, r ...
... In rats, the central regulation of the reproductive axis is carried out by about 10001600 GnRH neurons (7, 8). These neurons ontogenetically originate outside the brain in the olfactory placodes (9) and migrate to their final location during the embryonic life. In addition to these data from mice, r ...
THE VISUAL CLAUSTRUM OF THE CAT I. Structure and Connections`
... cm. Eyes were refracted and retinal landmarks were plotted by the fiber optic method of Pettigrew et al. ...
... cm. Eyes were refracted and retinal landmarks were plotted by the fiber optic method of Pettigrew et al. ...
FREE Sample Here
... 29) Which of the following is FALSE regarding the communication between neurons? A) Neural communication occurs every time an individual moves or has a thought. B) The synapse is the site where the pre-synaptic neuron communicates with the post-synaptic neuron. Incorrect. The neuron before the synap ...
... 29) Which of the following is FALSE regarding the communication between neurons? A) Neural communication occurs every time an individual moves or has a thought. B) The synapse is the site where the pre-synaptic neuron communicates with the post-synaptic neuron. Incorrect. The neuron before the synap ...
FREE Sample Here
... 29) Which of the following is FALSE regarding the communication between neurons? A) Neural communication occurs every time an individual moves or has a thought. B) The synapse is the site where the pre-synaptic neuron communicates with the post-synaptic neuron. Incorrect. The neuron before the synap ...
... 29) Which of the following is FALSE regarding the communication between neurons? A) Neural communication occurs every time an individual moves or has a thought. B) The synapse is the site where the pre-synaptic neuron communicates with the post-synaptic neuron. Incorrect. The neuron before the synap ...
Altered fear learning across development in both mouse and human
... This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10. 1073/pnas.1206834109/-/DCSupplemental. ...
... This article contains supporting information online at www.pnas.org/lookup/suppl/doi:10. 1073/pnas.1206834109/-/DCSupplemental. ...
The Relation between Dendritic Geometry
... the number of primary dendrites could account for up to 50% of this correlation. Fourthly, dendritic arborization was not correlated with axonal projection, and axonal projection types could not be predicted by electrical excitability parameters. We conclude that 1) dendritic polarity is correlated ...
... the number of primary dendrites could account for up to 50% of this correlation. Fourthly, dendritic arborization was not correlated with axonal projection, and axonal projection types could not be predicted by electrical excitability parameters. We conclude that 1) dendritic polarity is correlated ...
mastering-the-world-of-psychology-4th-edition-wood
... 29) Which of the following is FALSE regarding the communication between neurons? A) Neural communication occurs every time an individual moves or has a thought. B) The synapse is the site where the pre-synaptic neuron communicates with the post-synaptic neuron. Incorrect. The neuron before the synap ...
... 29) Which of the following is FALSE regarding the communication between neurons? A) Neural communication occurs every time an individual moves or has a thought. B) The synapse is the site where the pre-synaptic neuron communicates with the post-synaptic neuron. Incorrect. The neuron before the synap ...
Spatial and Temporal Structure of Receptive Fields in Primate
... behave in the same way as do area 3b RFs when the velocity changes. In particular, a change in scanning velocity produces virtually no change in the spatial structure of area 3b RFs, but it does affect the excitatory and inhibitory intensities. The observed pixel-by-pixel correlations between RFs de ...
... behave in the same way as do area 3b RFs when the velocity changes. In particular, a change in scanning velocity produces virtually no change in the spatial structure of area 3b RFs, but it does affect the excitatory and inhibitory intensities. The observed pixel-by-pixel correlations between RFs de ...
[Ca2+]c dynamics in spontaneously firing dopamine neurons of the
... receptors (mGluR), whereas at high concentrations (>10 µM) it raised [Ca2+]c mainly by activating AMPA/kainate Introduction Glutamate-mediated rises in cytosolic free Ca2+ concentration ([Ca2+]c) are of the ultimate importance for neuronal excitability (Nakanishi, 1992; Berridge, 1998); they also pl ...
... receptors (mGluR), whereas at high concentrations (>10 µM) it raised [Ca2+]c mainly by activating AMPA/kainate Introduction Glutamate-mediated rises in cytosolic free Ca2+ concentration ([Ca2+]c) are of the ultimate importance for neuronal excitability (Nakanishi, 1992; Berridge, 1998); they also pl ...
- The Human Brain
... + pallidum, is rather abandoned in neuroanatomy but is still in use in pathology e .g . 'hepato-lenticular degeneration' . - The rostral part of the nucleus caudatus in man may have a homologous; function like the much more developed limbic striatum in lower mamals (Barbeau, 1973 ; Stevens, 1973) . ...
... + pallidum, is rather abandoned in neuroanatomy but is still in use in pathology e .g . 'hepato-lenticular degeneration' . - The rostral part of the nucleus caudatus in man may have a homologous; function like the much more developed limbic striatum in lower mamals (Barbeau, 1973 ; Stevens, 1973) . ...
Print - Physiological Reviews
... E6.5 as uncommitted epiblast cells undergo lineage specification during gastrulation. This is the developmental process through which the three fetal germ layers (definitive endoderm, mesoderm, and definitive ectoderm) are born (14, 334) (FIGURE 1A). During gastrulation, epiblast cells at the poster ...
... E6.5 as uncommitted epiblast cells undergo lineage specification during gastrulation. This is the developmental process through which the three fetal germ layers (definitive endoderm, mesoderm, and definitive ectoderm) are born (14, 334) (FIGURE 1A). During gastrulation, epiblast cells at the poster ...