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  • 1
    Electronic Resource
    Electronic Resource
    Convergence of excitatory and inhibitory action on interneurones in the lumbosacral cord (1966)
    Springer
    Experimental brain research 1 (1966), S. 338-358 
    Details
    ISSN: 1432-1106
    Keywords: EPSPs ; IPSPs ; Interneurones ; Spinal cord
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intracellular recording has been made in spinal cats from more than 100 interneurones in the dorsal horn and intermediary region of the lumbosacral spinal cord. The majority of interneurones receive not only EPSPs but also IPSPs from primary afferents. The IPSPs are evoked from three different systems, group I muscle afferents (probably Ib), low threshold cutaneous afferents and the FRA. The shortest central latency of the IPSPs indicates a disynaptic linkage from primary afferents. Interneurones with monosynaptic EPSPs from group I muscle afferents may receive IPSPs from all the above mentioned afferent systems. Interneurones with monosynaptic EPSPs from cutaneous afferents receive their inhibition from the two latter afferent systems. Convergence of EPSPs and IPSPs from the FRA may occur on the same interneurone. The results are discussed mainly with respect to inhibitory interaction between spinal reflex pathways.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00237706
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    New observations on input to spino-cervical tract neurons from muscle afferents (1994)
    Springer
    Experimental brain research 100 (1994), S. 1-6 
    Details
    ISSN: 1432-1106
    Keywords: Spinal cord ; Ascending tracts ; Spinocervical neurons ; Group II muscle afferents ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Peripheral input to spino-cervical tract (SCT) neurons located in the L4 and L5 segments of the cat spinal cord was investigated using both extracellular and intracellular recording. The main aim was to find out whether midlumbar SCT neurons are excited monosynaptically not only by cutaneous afferents but also by group II muscle afferents, as in the sacral segments but apparently not in the caudal lumbar segments. Input from group II muscle afferents was found in 73% of investigated neurons; the latencies of excitation by group II afferents were compatible with a monosynaptic coupling between these afferents and 62% of neurons. The majority of the midlumbar SCT neurons were excited by group II afferents of the quadriceps and deep peroneal nerves. The predominant monosynaptic input from cutaneous afferents to the same neurons was from the saphenous nerve.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00227273
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    Paper (German National Licenses)
    Fulltext
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