Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Cytoarchitecture and cytology of the lateral reticular nucleus in the rat (1982)
    Springer
    Anatomy and embryology 164 (1982), S. 229-242 
    Details
    ISSN: 1432-0568
    Keywords: Lateral reticular nucleus ; Cytoarchitecture ; Cytology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The cytoarchitecture and cytology of the rat lateral reticular nucleus (LRN) was studied in serial sections of paraffin embedded tissue stained with cresyl violet. Cell outlines and nuclear outlines were drawn in the transverse plane and the nucleus was serially reconstructed. The LRN in the rat begins at a point just caudal to the caudal limit of the inferior olivary nucleus and extends to the mid-olivary level. The nucleus can be subdivided into a predominantly small-celled parvocellular division ventrally, a predominantly large-celled magnocellular division dorsomedially, and a subtrigeminal division dorsolaterally containing predominantly medium-sized cells. At rostral levels the nucleus comprises two parts, a medial principal portion and a lateral subtrigeminal division. Measurements of neuronal diameters yielded size distributions which confirmed the predominance of large cells in the magnocellular division, small cells in the parvocellular division and medium-sized cells in the subtrigeminal division. The neurons display multipolar, triangular, piriform and fusiform somata. All types show a range in size from small to large. The larger cells have abundant Nissl bodies which are coarse in nature and voluminous cytoplasm. The smaller cells have poorly developed Nissl bodies and scant amounts of cytoplasm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318507
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    An ultrastructural study of the lateral reticular nucleus in the rat (1982)
    Springer
    Anatomy and embryology 165 (1982), S. 329-344 
    Details
    ISSN: 1432-0568
    Keywords: Lateral reticular nucleus ; Ultrastructure ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A systematic study of the normal synaptic patterns within the lateral reticular nucleus (LRN) of the rat revealed various synaptic relationships. Two types of axon terminals were identified according to the morphology of the synaptic vesicles contained within them. Axon terminals with round vesicles established asymmetrical synaptic contacts with the somata and all areas of the dendritic trees including somatic and dendritic appendages. Pleomorphic-vesicle terminals established symmetrical synaptic contacts on somata and their appendages and on all sizes of dendrites and their appendages. Both round and pleomorphicvesicle terminals were infrequently seen to synapse upon the somata and proximal dendrites. The round-vesicle terminals outnumbered the pleomorphic-vesicle terminals on the dendritic trees. Terminals of the en passant type were also common throughout the LRN. Both round and pleomorphic-vesicle terminals were observed simultaneously contacting the soma and one or more dendritic profiles, or two different dendritic profiles. Synaptic configurations (glomeruli) were also observed in all three divisions of the nucleus. They consisted of a large, central, round-vesicle terminal contacting a number of small-calibre dendritic processes. This arrangement was surrounded by one or more sheets of glial lamellae. Puncta adherentia were observed on the apposed membranes of adjacent cells, adjacent dendrites and adjacent axon terminals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00305571
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Spinal projections to the lateral reticular nucleus in the rat (1982)
    Springer
    Anatomy and embryology 165 (1982), S. 345-359 
    Details
    ISSN: 1432-0568
    Keywords: Lateral reticular nucleus ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The synaptic relationships and the distribution of the afferent terminals of the spinal pathway to the lateral reticular nucleus (LRN) of the rat were examined following induced degeneration. After high cervical hemisections, the spino-LRN projection was first examined with the Fink-Heimer silver impregnation method. Degeneration was confined primarily to the ipsilateral LRN and all three divisions of the nucleus were involved. Maximum degeneration was observed in the caudal regions of the parvocellular division. The magnocellular division, except for the extreme dorsomedial area, showed substantial degeneration as well. The subtrigeminal division throughout its entire length contained only sparse degeneration. Electron microscopic examination following spinal cord lesions revealed both round and pleomorphic-vesicle terminals in various stages of electron dense degeneration. The majority of the degenerating terminals were of the round-vesicle variety. Both types of terminals contacting somata were also observed to degenerate but their number was small in comparison to those on dendritic profiles. Terminals in synaptic contact with two dendritic profiles were also observed to degenerate. Some of the large terminals belonging to synaptic configurations (glomeruli) underwent degeneration and were therefore of spinal origin as well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00305572
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Afferent organization of the lateral reticular nucleus in the rat: An anterograde tracing study (1992)
    Springer
    Anatomy and embryology 185 (1992), S. 25-37 
    Details
    ISSN: 1432-0568
    Keywords: Afferent projections ; HRP ; WGA ; Lateral reticular nucleus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The organization of the afferent projections to the lateral reticular nucleus of the rat was investigated following placement of horseradish peroxidase-conjugated wheatgerm agglutinin into the red nucleus, fastigial nucleus, various levels of the spinal cord or the sensorimotor area of the cerebral cortex. The pattern of distribution of anterogradely labelled profiles visualized with tetramethylbenzidine revealed that the caudal three-fourths of the lateral reticular nucleus received a large, topographically organized projection from the entire length of the contralateral spinal cord. The lateral part of the rostral half of the lateral reticular nucleus received a small projection from the contralateral red nucleus, the dorsal part of the middle third of the nucleus received a diffuse projection from the contralateral fastigial nucleus, and the extreme rostromedial part of the nucleus received a sparse projection from the contralateral cerebral cortex. The dorsal part of the middle third of the lateral reticular nucleus also received a small projection from the ipsilateral cervical spinal cord. The distribution of afferent fibres from different levels of the spinal cord, red nucleus, and fastigial nucleus overlapped substantially in the middle third of the lateral reticular nucleus, whereas the cerebral cortical receiving area was separate. These data suggest that the middle third of the lateral reticular nucleus integrates spinal and supraspinal impulses to the cerebellum, while the rostral part of the nucleus is involved in a separate cerebral cortico-cerebellar pathway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00213598
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    A Golgi study of the lateral reticular nucleus in the rat (1982)
    Springer
    Anatomy and embryology 164 (1982), S. 243-256 
    Details
    ISSN: 1432-0568
    Keywords: Lateral reticular nucleus ; Golgi ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The organization of the lateral reticular nucleus (LRN) of the rat was investigated by using the Golgi technique. Golgi-Cox preparations revealed neurons with shapes similar to those observed in Nissl-stained preparations. Fusiform cells possess rectilinear dendrites with secondary dendrites which are longer than the parent stem. The remaining cell types have short dendrites which branch for three or four generations and follow a tortuous course. These two types of neurons are similar to the isodendritic and allodendritic neurons which have been reported in the reticular formation. The neurons throughout the LRN form cell clusters. In Golgi preparations five to ten cells are seen in each cluster but counterstaining reveals that the clusters are made up of many more cells than the Golgi preparations suggest. Many cells lie in close apposition and the dendrites of the cells in each cluster intertwine to form dendritic plexuses. Dendritic input from both neighbouring and distant cell clusters also contributes to the plexus formations within each cell cluster. Under high magnification, the dendrites show irregularities in their contours, including warty excrescenses, bumps and an array of spines, some of which are pedunculated. The appendages are confined primarily to distal portions of the dendrites, with few spines observed on the somata and proximal dendrites. Varicosed dendrites are also in common occurrence throughout the nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318508
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    A horseradish peroxidase study of the projections from the lateral reticular nucleus to the cerebellum in the rat (1982)
    Springer
    Anatomy and embryology 165 (1982), S. 1-18 
    Details
    ISSN: 1432-0568
    Keywords: Lateral reticular nucleus ; Cerebellar projection ; Horseradish peroxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The projection from the lateral reticular nucleus (LRN) to the cerebellar cortex was studied in the rat by utilizing the retrograde transport of horseradish peroxidase (HRP). In order to study the topographic features of this projection, small amounts of HRP were injected into various sites in the cerebellar cortex. The results demonstrated that the caudal lobules of the anterior lobe vermis tend to receive afferents from the medial LRN and the rostral lobules of the vermis receive afferents from more laterally situated cells. Lobules IV and V receive inputs primarily from the magnocellular division of the LRN of both the ventromedial and dorsolateral parts of the LRN, while lobules II and III receive inputs mainly from cells which lie in the border area between the parvocellular and magnocellular division of the ventromedial part. Following injections within various areas of the posterior lobe vermis, the results indicated that lobule VIII receives the most abundant projection from the LRN and that the cells of origin are present within the parvocellular and the adjacent part of the magnocellular division throughout the rostrocaudal extent of the LRN. Following injections within lobules VI and VII, few labelled cells were found and they tended to lie within the rostral two-thirds of the magnocellular division. Little or no projection from the LRN to lobule IX was evident. The hemispheres were found to receive a modest projection from the dorsal aspect of the LRN. The projection to lobulus simplex originates mainly from the caudal two-thirds of the magnocellular division, while the projection to the ansiform and paramedian lobules originates mainly from the dorsal aspect of the rostral two-thirds of the magnocellular division. Finally, there appears to be extensive overlapping of the orgins of all three projections to the cerebellar cortex studied, and this occurs within the central area of the magnocellular division throughout the rostrocaudal extent of the LRN.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00304579
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    An anterograde HRP-WGA study of aberrant corticorubral projections following neonatal lesions of the rat sensorimotor cortex (1985)
    Springer
    Experimental brain research 59 (1985), S. 365-371 
    Details
    ISSN: 1432-1106
    Keywords: Corticorubral projection ; Neonatal sensorimotor cortex lesion ; Anterograde transport ; Horseradish peroxidase ; Wheat germ agglutinin ; Topographic specificity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Anterograde transport of horseradish peroxidase — wheat germ agglutinin (HRP-WGA) was used to examine the effect of unilateral neonatal ablation of the sensorimotor cortex on the remaining corticofugal projections to the midbrain in the rat. In unlesioned animals, the sensorimotor cortical efferents to the midbrain were entirely ipsilateral, terminal labeling being evident in the red nucleus, the midbrain reticular formation, the periaqueductal gray, the intermediate gray layer of the superior colliculus, the nucleus parafascicularis prerubralis and the perilemniscal area. Corticorubral fibers were seen to reach the midbrain through the thalamus or the cerebral peduncle. In the red nucleus, terminal labeling was essentially restricted to the parvocellular region. In neonatally lesioned adults, aberrant corticofugal fibers crossed the midline to terminate in the contralateral red nucleus, the midbrain reticular formation, the periaqueductal gray, the nucleus parafascicularis prerubralis and the intermediate gray layer of the superior colliculus. The aberrant projections maintained the topographic specificity of the normal ipsilateral projections. This was most evident in the corticorubral projection, where the aberrant contralateral fibers terminated in the parvocellular area of the red nucleus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00230916
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Supramedullary projections to the dorsal and ventral divisions of the paramedian reticular nucleus in the cat (1985)
    Springer
    Experimental brain research 58 (1985), S. 368-378 
    Details
    ISSN: 1432-1106
    Keywords: Paramedian reticular nucleus ; Accessory oculomotor nuclei ; Superior colliculus ; Motor cortex ; Postural control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Injections of combined lectin-conjugated and unconjugated horseradish peroxidase were made in the dorsal (d) and ventral (v) divisions of the paramedian reticular nucleus (PRN), a precerebellar relay nucleus, of the cat. The origins of supramedullary afferent projections to the PRN were identified in the pons, midbrain and cerebral cortex using the transverse plane of section. The data indicate a segregation of input from a number of sites to the dPRN and vPRN. The interstitial nucleus of Cajal projects bilaterally to the dPRN and predominantly to the ipsilateral side. The vPRN receives only a unilateral projection from the ipsilateral nucleus of Cajal. Major afferent projections to the vPRN arise from the ipsilateral nucleus of Darkschewitsch and the intermediate layer of the contralateral superior colliculus. Neither of these sites projected to the dPRN. The raphe nuclei and medial reticular formation of the pons and midbrain contribute a moderate input to both divisions of the PRN. A moderate bilateral cerebral cortical projection arises from the first somatomotor area (SMI). The ventral coronal and anterior sigmoid gyri project mainly to the dPRN and vPRN respectively. Smaller afferent projections arise from the posterior sigmoid gyri and area 6 of Hassler and Mühs-Clement (1964) in the medial wall of the anterior sigmoid gyrus. Inputs from the accessory oculomotor nuclei, tectal regions and the first somatomotor cortex suggest a role in postural control for the PRN which may underlie its involvement in mediating orthostatic reflexes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235318
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...