the electron microscopic localization of
... are resolved within many of these. Deposits of lead sulfide may be seen either surrounding very small axon branches, or as discontinuous patches on the surface of larger axons. The cytological details of the localization of this reaction are more clearly seen at higher magnification in Figs. 7, 8, 9 ...
... are resolved within many of these. Deposits of lead sulfide may be seen either surrounding very small axon branches, or as discontinuous patches on the surface of larger axons. The cytological details of the localization of this reaction are more clearly seen at higher magnification in Figs. 7, 8, 9 ...
damage to oligodendrocytes and axons following endothelin 1
... The axon originates at a cone shaped thickening on the cell body called the axon hillock. It is often (but not always) unbranched until just before it terminates, but it may branch many times in its terminal region. The diameter of the axon remains more or less unchanged throughout its length. Its s ...
... The axon originates at a cone shaped thickening on the cell body called the axon hillock. It is often (but not always) unbranched until just before it terminates, but it may branch many times in its terminal region. The diameter of the axon remains more or less unchanged throughout its length. Its s ...
Minireview: Role of Glia in Neuroendocrine Function
... at least two fundamental ways: 1) the hormone acts directly on the glia, which in turn signals to the neuron to modulate its function (5, 6). Signaling to the neuron may involve secretion of a growth factor, neurohormone, or transmitter-like substance (a variation of this involves the glia signaling ...
... at least two fundamental ways: 1) the hormone acts directly on the glia, which in turn signals to the neuron to modulate its function (5, 6). Signaling to the neuron may involve secretion of a growth factor, neurohormone, or transmitter-like substance (a variation of this involves the glia signaling ...
VISCERAL SENSORY NEURONS THAT INNERVATE BOTH
... indicate that sensory information to the DRG neurons may originate in different viscera. Although it is generally accepted that each primary afferent neuron is a single sensory channel, several studies have challenged that view and demonstrate that a population of DRG neurons can innervate both the ...
... indicate that sensory information to the DRG neurons may originate in different viscera. Although it is generally accepted that each primary afferent neuron is a single sensory channel, several studies have challenged that view and demonstrate that a population of DRG neurons can innervate both the ...
Nervous System - Napa Valley College
... It is an all or nothing response – if it is not a great enough stimulation the channels won’t open. The level of the action potential is always the same. The direction is always one way down the axon. The sodium channels are inactivated for awhile after the action potential passes = refractory p ...
... It is an all or nothing response – if it is not a great enough stimulation the channels won’t open. The level of the action potential is always the same. The direction is always one way down the axon. The sodium channels are inactivated for awhile after the action potential passes = refractory p ...
Neural Axis Representing Target Range in the Auditory
... Spectroscopy with a Single Pulse of Laser-Produced X-rays Odotopic representation is the term we use to describe the representation of Abstract. The extended x-ray absorption fine structure (EXAFS) spectrum of target range by the location of neurons aluminum has been measured with a nanosecond pulse ...
... Spectroscopy with a Single Pulse of Laser-Produced X-rays Odotopic representation is the term we use to describe the representation of Abstract. The extended x-ray absorption fine structure (EXAFS) spectrum of target range by the location of neurons aluminum has been measured with a nanosecond pulse ...
network - Ohio University
... Recurrence: secondary, repeated activation; from this come networks with recurrence (bidirectional). Bottom-up and top-down, or recognition and imagination. Recurrence makes possible the completion of images, formation of resonances between associated representations, strengthening of weak activatio ...
... Recurrence: secondary, repeated activation; from this come networks with recurrence (bidirectional). Bottom-up and top-down, or recognition and imagination. Recurrence makes possible the completion of images, formation of resonances between associated representations, strengthening of weak activatio ...
PDF
... Cortical progenitors undergo progressive fate restriction, thereby sequentially producing the different layers of the neocortex. However, how these progenitors precisely change their fate remains highly debatable. We have previously shown the existence of cortical feedback mechanisms wherein postmit ...
... Cortical progenitors undergo progressive fate restriction, thereby sequentially producing the different layers of the neocortex. However, how these progenitors precisely change their fate remains highly debatable. We have previously shown the existence of cortical feedback mechanisms wherein postmit ...
Neurobilogy of Sleep
... • The VLPO is an area in the hypothalamus containing neurons active during sleep. Most sleep-active neurons in the VLPO are believed to be active during both NREM and REM sleep • Many of the VLPO neurons are activated by sleepinducing factors including adenosine and prostaglandinD2. These neurons ar ...
... • The VLPO is an area in the hypothalamus containing neurons active during sleep. Most sleep-active neurons in the VLPO are believed to be active during both NREM and REM sleep • Many of the VLPO neurons are activated by sleepinducing factors including adenosine and prostaglandinD2. These neurons ar ...
Binaural Interaction in the Nucleus Laminaris of the Barn Owl: A
... In the auditory system of the barn owl, ITD is analyzed in a separate, hierarchically organized network, the ’time pathway’. The anatomical and physiological features of the first two stations of this pathway, the cochlear nucleus magnocellularis (NM) and the nucleus laminaris (NL), the first locus ...
... In the auditory system of the barn owl, ITD is analyzed in a separate, hierarchically organized network, the ’time pathway’. The anatomical and physiological features of the first two stations of this pathway, the cochlear nucleus magnocellularis (NM) and the nucleus laminaris (NL), the first locus ...
Development of the spinal cord
... • Another pair of vesicles will also sprout from the ventral surface of these cerebral hemispheres to become the olfactory bulbs and other structures that contribute to the sense of smell. • Various structures will then emerge from the walls of the telencephalon while the white matter that connect ...
... • Another pair of vesicles will also sprout from the ventral surface of these cerebral hemispheres to become the olfactory bulbs and other structures that contribute to the sense of smell. • Various structures will then emerge from the walls of the telencephalon while the white matter that connect ...
Axonal wiring of guanylate cyclase-D
... The main and accessory olfactory systems of the mouse detect a large variety of chemical stimuli from the external environment. Chemoreception is mediated by several types of receptor molecules that are expressed by specialized sensory neurons (Axel, 2005; Buck, 2005; Mombaerts, 2004). The informati ...
... The main and accessory olfactory systems of the mouse detect a large variety of chemical stimuli from the external environment. Chemoreception is mediated by several types of receptor molecules that are expressed by specialized sensory neurons (Axel, 2005; Buck, 2005; Mombaerts, 2004). The informati ...
Copy of Development of the spinal cord
... • Another pair of vesicles will also sprout from the ventral surface of these cerebral hemispheres to become the olfactory bulbs and other structures that contribute to the sense of smell. • Various structures will then emerge from the walls of the telencephalon while the white matter that connect ...
... • Another pair of vesicles will also sprout from the ventral surface of these cerebral hemispheres to become the olfactory bulbs and other structures that contribute to the sense of smell. • Various structures will then emerge from the walls of the telencephalon while the white matter that connect ...
Target neuron prespecification in the olfactory map of Drosophila
... neural map (Fig. 1d). Three basic mechanisms for the formation of such neural maps can be proposed. In the ®rst two mechanisms (Fig. 1a, b), either input or target neurons are genetically prespeci®ed, whereas neurons of the remaining ®eld are naive until speci®ed by the identity of their partners du ...
... neural map (Fig. 1d). Three basic mechanisms for the formation of such neural maps can be proposed. In the ®rst two mechanisms (Fig. 1a, b), either input or target neurons are genetically prespeci®ed, whereas neurons of the remaining ®eld are naive until speci®ed by the identity of their partners du ...
Vegetative nervous system
... muscle that are painful when pressed and may feel knotty to the touch. Myofascial refers to the body's soft tissue, comprised of muscles and the muscle fascia (or skin), which covers bones, muscle fibers and groups of muscles. Myofascial pain is often misdiagnosed and mistreated because the cause is ...
... muscle that are painful when pressed and may feel knotty to the touch. Myofascial refers to the body's soft tissue, comprised of muscles and the muscle fascia (or skin), which covers bones, muscle fibers and groups of muscles. Myofascial pain is often misdiagnosed and mistreated because the cause is ...
Lbx1 marks a subset of interneurons in chick hindbrain and spinal cord
... domain broadens (Fig. 1B,C, blue staining), but is maintained at least until HH26 with some upregulation in rhombomeres 3±6 (not shown). At all stages analyzed, the Lbx1 domain resides in the mantle zone of hindbrain and spinal cord. To precisely localize the Lbx1 domain, we doublelabelled the embry ...
... domain broadens (Fig. 1B,C, blue staining), but is maintained at least until HH26 with some upregulation in rhombomeres 3±6 (not shown). At all stages analyzed, the Lbx1 domain resides in the mantle zone of hindbrain and spinal cord. To precisely localize the Lbx1 domain, we doublelabelled the embry ...
Peripheric nervous system. Vegetative nervous system
... 6.1 Theory. Items to be considered 1. The structure of a nerve trunk. It contains nerve fibres and layers of connective tissue. The nerves are mostly combined (afferent and efferent fibres), contain myelinated and unmyelinated fibers of somatic and vegetative nervous systems. Endoneurium is a nerve ...
... 6.1 Theory. Items to be considered 1. The structure of a nerve trunk. It contains nerve fibres and layers of connective tissue. The nerves are mostly combined (afferent and efferent fibres), contain myelinated and unmyelinated fibers of somatic and vegetative nervous systems. Endoneurium is a nerve ...
Slide 1
... FIGURE 25.21 Innervation schematics and responses of two circuits in the lower brainstem that are important in binaural sound localization. Neuronal cell bodies are shown as dots, and fiber pathways are shown as lines; positions of large synaptic terminals (endbulbs and calyces) are indicated. (A) ...
... FIGURE 25.21 Innervation schematics and responses of two circuits in the lower brainstem that are important in binaural sound localization. Neuronal cell bodies are shown as dots, and fiber pathways are shown as lines; positions of large synaptic terminals (endbulbs and calyces) are indicated. (A) ...
Nervous communication
... The reflex arc A reflex arc is the nerve pathway of a reflex: A sensory neurone, a relay neurone and a motor neurone. In a reflex (e.g. withdrawing a finger from a hot object) 1.An impulse starts in a receptor 2.then is transmitted to a sensory neurone 3.then to a relay neurone in the brain or spin ...
... The reflex arc A reflex arc is the nerve pathway of a reflex: A sensory neurone, a relay neurone and a motor neurone. In a reflex (e.g. withdrawing a finger from a hot object) 1.An impulse starts in a receptor 2.then is transmitted to a sensory neurone 3.then to a relay neurone in the brain or spin ...
Laboratory Exercise 12: Sensory Physiology
... Skin receptors are distributed in a pinpoint (punctiform) fashion. Touch receptors are more numerous than temperature receptors. The cold receptors are more numerous than hot receptors for a given area of skin. B. Distribution of Skin Receptors Receptors are not uniformly distributed on the body sur ...
... Skin receptors are distributed in a pinpoint (punctiform) fashion. Touch receptors are more numerous than temperature receptors. The cold receptors are more numerous than hot receptors for a given area of skin. B. Distribution of Skin Receptors Receptors are not uniformly distributed on the body sur ...
Mammalian Models of CNS Regeneration - Wiley-VCH
... Probably the best model for producing reliable complete lesions of a CNS tract is provided by the optic nerve, which can be completely sectioned or crushed by an experienced operator, with little chance of axonal sparing. This has allowed major discoveries to be made on the influence of neurotrophic ...
... Probably the best model for producing reliable complete lesions of a CNS tract is provided by the optic nerve, which can be completely sectioned or crushed by an experienced operator, with little chance of axonal sparing. This has allowed major discoveries to be made on the influence of neurotrophic ...
Nogo Receptor mRNA Expression in Intact and Regenerating CNS
... found more extensive expression of NgR in the cerebellar cortex than previously reported and, in addition, we have shown that NgR is differentially expressed in various regions of the forebrain. In particular, neostriatal neurons and neurons in the ventral lateral geniculate nucleus and TRN appear n ...
... found more extensive expression of NgR in the cerebellar cortex than previously reported and, in addition, we have shown that NgR is differentially expressed in various regions of the forebrain. In particular, neostriatal neurons and neurons in the ventral lateral geniculate nucleus and TRN appear n ...
HYPOTHALAMUS and EPITHALAMUS
... The internal carotid gives sup. & inf. hypophyseal arteries; the inferior supplies only the posterior pituitary; the superior supplies the hypothalamus including the primary capillary plexus in the median eminence, from which long and short portal veins pass to the anterior pituitary carrying the re ...
... The internal carotid gives sup. & inf. hypophyseal arteries; the inferior supplies only the posterior pituitary; the superior supplies the hypothalamus including the primary capillary plexus in the median eminence, from which long and short portal veins pass to the anterior pituitary carrying the re ...