Generation of Theta and Gamma Rhythms in the Hippocampus
... When the Schaffer collaterals were stimulated by an electrical shock, a negative wave was observed in the apical dendrites of the CA1 pyramidal cells (Fig. 3); this negative wave reversed to a positive wave at the CA1 cell body layer. The apical dendritic negative wave was the population excitatory ...
... When the Schaffer collaterals were stimulated by an electrical shock, a negative wave was observed in the apical dendrites of the CA1 pyramidal cells (Fig. 3); this negative wave reversed to a positive wave at the CA1 cell body layer. The apical dendritic negative wave was the population excitatory ...
ORGANIZATION OF NEUROPIL
... commissures. The fibers of the tracts are either axons or extended, unbranched portions of the dendritic arborizations. 4) The fourth and final division is the central neuropil, the neuron feltwork. In many cases it represents the major portion of the ganglion. The term neuropil, however, has beef, ...
... commissures. The fibers of the tracts are either axons or extended, unbranched portions of the dendritic arborizations. 4) The fourth and final division is the central neuropil, the neuron feltwork. In many cases it represents the major portion of the ganglion. The term neuropil, however, has beef, ...
connections of the hypothalamus and preoptic area with nuclei of
... following selective injeotions into the posterior part of the cortical nucleus (Fig. 4, R76). After injections into other amygdaloid nuclei no HlZP labeled cells were seen in the vent.r8al plremammillary nucleus (F'ig. 4, R95, R94, R60 and Fig. 5, R20). The HRP labeled cells in the posterior hypotha ...
... following selective injeotions into the posterior part of the cortical nucleus (Fig. 4, R76). After injections into other amygdaloid nuclei no HlZP labeled cells were seen in the vent.r8al plremammillary nucleus (F'ig. 4, R95, R94, R60 and Fig. 5, R20). The HRP labeled cells in the posterior hypotha ...
The Role of the Terminal Nerve and GnRH in Olfactory System
... Animals must regulate their sensory responsiveness appropriately with respect to their internal and external environments, which is accomplished in part via centrifugal modulatory pathways. In the olfactory sensory system, responsiveness is regulated by neuromodulators released from centrifugal fibe ...
... Animals must regulate their sensory responsiveness appropriately with respect to their internal and external environments, which is accomplished in part via centrifugal modulatory pathways. In the olfactory sensory system, responsiveness is regulated by neuromodulators released from centrifugal fibe ...
Contact guidance of CNS neurites on grooved quartz: influence of
... (Harrison, 1914) yet surprisingly little is known about the cellular events of contact sensing and their transduction into directional growth, especially in neuronal growth cones. The aim of the present study was to describe the directional effects of substratum contours on the morphology of develop ...
... (Harrison, 1914) yet surprisingly little is known about the cellular events of contact sensing and their transduction into directional growth, especially in neuronal growth cones. The aim of the present study was to describe the directional effects of substratum contours on the morphology of develop ...
IOSR Journal Of Environmental Science, Toxicology And Food Technology (IOSR-JESTFT)
... fluoride. Ascorbic acid and Ginkgo biloba received animal brain showed less degeneration. Fluoride exposed brain showed histopathological changes suggesting necrosis/ apoptosis, and these changes are linked to the thyroid hormone levels [36]. The neurodegeneration observed in the present study was s ...
... fluoride. Ascorbic acid and Ginkgo biloba received animal brain showed less degeneration. Fluoride exposed brain showed histopathological changes suggesting necrosis/ apoptosis, and these changes are linked to the thyroid hormone levels [36]. The neurodegeneration observed in the present study was s ...
Nap, a Novel Member of the Pentraxin Family, Promotes Neurite
... The mature CNS exhibits the capacity to alter cellular interactions as a function of the activity of specific neuronal circuits. This capacity is believed to underlie learning and memory as well as aspects of postnatal development of the brain (Shatz, 1990). Cellular mechanisms underlying activity-d ...
... The mature CNS exhibits the capacity to alter cellular interactions as a function of the activity of specific neuronal circuits. This capacity is believed to underlie learning and memory as well as aspects of postnatal development of the brain (Shatz, 1990). Cellular mechanisms underlying activity-d ...
Shared and distinct retinal input to the mouse superior colliculus and
... Fig. 1. The vast majority of RGCs, and the vast majority of dLGN-projecting RGCs, innervate the SC. A: 88% of mouse RGCs are retrogradely labeled from the SC. Top, confocal image of the ganglion cell layer of vGlut-Cre ⫻ Ai14 mouse retina ⬃7 days after ⬃100 nl of DiO were injected into the SC. DAPI ...
... Fig. 1. The vast majority of RGCs, and the vast majority of dLGN-projecting RGCs, innervate the SC. A: 88% of mouse RGCs are retrogradely labeled from the SC. Top, confocal image of the ganglion cell layer of vGlut-Cre ⫻ Ai14 mouse retina ⬃7 days after ⬃100 nl of DiO were injected into the SC. DAPI ...
Prospero regulates gcm expression to induce glial fates
... Bernardoni et al., 1999). To test this model, we scored gcm mRNA localization by fluorescent in situ hybridization. We observe low levels of gcm mRNA in the predivisional NGB 64T, followed by uniform localization in the mitotic NGB 6-4T, and equal distribution to both NGB 6-4T and G sibling cells (F ...
... Bernardoni et al., 1999). To test this model, we scored gcm mRNA localization by fluorescent in situ hybridization. We observe low levels of gcm mRNA in the predivisional NGB 64T, followed by uniform localization in the mitotic NGB 6-4T, and equal distribution to both NGB 6-4T and G sibling cells (F ...
Olfactory pathway
... the temporal lobe (uncus). Then to olfactory association cortex (anterior part of parahippocampal gyrus or entorinal area). The primary olfactory area and olfactory association cortex are referred to as the pyriform cortex. It is responsible for the appreciation of olfactory stimuli. ...
... the temporal lobe (uncus). Then to olfactory association cortex (anterior part of parahippocampal gyrus or entorinal area). The primary olfactory area and olfactory association cortex are referred to as the pyriform cortex. It is responsible for the appreciation of olfactory stimuli. ...
Distribution of Agrin mRNAs in the Chick Embryo Nervous System
... that lack one or both inserts (A,B, and A,B,) encoded proteins with little or no AChR-aggregating activity in this assay, and were detected in both neural and non-neural tissues. The A,B,, variant, which encodes an isoform that may have greater AChRaggregating activity than those lacking the inserts ...
... that lack one or both inserts (A,B, and A,B,) encoded proteins with little or no AChR-aggregating activity in this assay, and were detected in both neural and non-neural tissues. The A,B,, variant, which encodes an isoform that may have greater AChRaggregating activity than those lacking the inserts ...
2906_lect8
... by which, after long-term exposure to an odorant, one is no longer able to detect that odorant or has very diminished detection ability Example: Going out of town, coming back and noticing how your house smells ...
... by which, after long-term exposure to an odorant, one is no longer able to detect that odorant or has very diminished detection ability Example: Going out of town, coming back and noticing how your house smells ...
Autometallographic Tracing of Bismuth in Human Brain Autopsies
... brains is in accordance with findings in different species (4, 12–15). The lysosomal storage of bismuth, silver mercury, and gold is believed to represent the last step in a detoxification process (23–29). However, alterations in lysosomal activity might result from this storage. Recently, mercury h ...
... brains is in accordance with findings in different species (4, 12–15). The lysosomal storage of bismuth, silver mercury, and gold is believed to represent the last step in a detoxification process (23–29). However, alterations in lysosomal activity might result from this storage. Recently, mercury h ...
Glia Engulf Degenerating Axons during Developmental Axon Pruning
... plasma membrane is unlabeled by HRP::CD2 (open arrowheads, Figures 1C3–1E3). To determine whether these ultrastructural changes are a consequence of axon pruning, we inhibited MB ␥ neuron pruning by expressing a yeast ubiquitin-specific protease (UBP2) in ␥ neurons [6] and performed EM analysis. We ...
... plasma membrane is unlabeled by HRP::CD2 (open arrowheads, Figures 1C3–1E3). To determine whether these ultrastructural changes are a consequence of axon pruning, we inhibited MB ␥ neuron pruning by expressing a yeast ubiquitin-specific protease (UBP2) in ␥ neurons [6] and performed EM analysis. We ...
Neural circuits underlying the generation of theta oscillations
... In the behaving rat, hippocampal theta oscillations are accompanied by high cholinergic tone (Jasper and Tessier, 1971; Zhang et al., 2010). In order to tune the network state into theta regime, the hippocampal activity diverges from a resting state characterized by sharp-wave-ripple complexes (Csic ...
... In the behaving rat, hippocampal theta oscillations are accompanied by high cholinergic tone (Jasper and Tessier, 1971; Zhang et al., 2010). In order to tune the network state into theta regime, the hippocampal activity diverges from a resting state characterized by sharp-wave-ripple complexes (Csic ...
The Structure of Pairwise Correlation in Mouse Primary Visual
... Institutional Animal Care and Use Committee. Adult C57/B6 mice (8– 24 weeks) were initially sedated with a mixture of xylazine (10 mg/kg) and fentanyl (10 µg/kg); anesthesia was induced with a high concentration of isoflurane (5%) and maintained with continuous inhaled isoflurane (0.1–1%). Additional ...
... Institutional Animal Care and Use Committee. Adult C57/B6 mice (8– 24 weeks) were initially sedated with a mixture of xylazine (10 mg/kg) and fentanyl (10 µg/kg); anesthesia was induced with a high concentration of isoflurane (5%) and maintained with continuous inhaled isoflurane (0.1–1%). Additional ...
NEOCORTEX
... simply counting spines gives a lower limit on the number of Type 1 synapses. However, because not all type 1 synapses are formed on spines, the degree of underestimation can only be determined by quantitative electron microscopy of the dendrites of identified neurons. Due to this methodological bott ...
... simply counting spines gives a lower limit on the number of Type 1 synapses. However, because not all type 1 synapses are formed on spines, the degree of underestimation can only be determined by quantitative electron microscopy of the dendrites of identified neurons. Due to this methodological bott ...
Projections from the spinal trigeminal nucleus to the cochlear
... known as mossy fibers were distributed within the GCD. Ventrally placed injections had an additional projection into the anteroventral cochlear nucleus, whereas dorsally placed injections had an additional projection into the posteroventral cochlear nucleus. All endings were filled with round synaptic ...
... known as mossy fibers were distributed within the GCD. Ventrally placed injections had an additional projection into the anteroventral cochlear nucleus, whereas dorsally placed injections had an additional projection into the posteroventral cochlear nucleus. All endings were filled with round synaptic ...
facing page
... organisms of different ages; the character of such alterations depends upon the postnatal age of toluene testing. Specifically, it was revealed that chronic inhalation of high concentrations of toluene affects recognition locomotor behavior in rats. This effect depends on the age of the animal and t ...
... organisms of different ages; the character of such alterations depends upon the postnatal age of toluene testing. Specifically, it was revealed that chronic inhalation of high concentrations of toluene affects recognition locomotor behavior in rats. This effect depends on the age of the animal and t ...
The largest growth cones in the animal kingdom
... Synopsis The marine mollusc, Aplysia californica is a powerful experimental model in cellular and systems neuroscience. Aplysia neurons are large, colored, and located at the ganglionic surface. Because of this, many neurons can be easily identified in terms of their physiological properties, synapt ...
... Synopsis The marine mollusc, Aplysia californica is a powerful experimental model in cellular and systems neuroscience. Aplysia neurons are large, colored, and located at the ganglionic surface. Because of this, many neurons can be easily identified in terms of their physiological properties, synapt ...
Isoform-specific expression and function of neuregulin
... (Meyer and Birchmeier, 1995). Mutations in neuregulin also impair development of the myocardium, which is the likely cause of death of mutant embryos on day 10.5 of development (Meyer and Birchmeier, 1995; Kramer et al., 1996). In the myocardium, similar defects are observed in animals that lack erb ...
... (Meyer and Birchmeier, 1995). Mutations in neuregulin also impair development of the myocardium, which is the likely cause of death of mutant embryos on day 10.5 of development (Meyer and Birchmeier, 1995; Kramer et al., 1996). In the myocardium, similar defects are observed in animals that lack erb ...
Subventricular zone
The subventricular zone (SVZ) is a paired brain structure situated throughout the lateral walls of the lateral ventricles. It is composed of four distinct layers of variable thickness and cell density, as well as cellular composition. Along with the dentate gyrus of the hippocampus, the SVZ is one of two places where neurogenesis has been found to occur in the adult mammalian brain.