doi: 10.1016/0168-0102(92)90015-5.
Descending pathways mediating disynaptic excitation of dorsal neck motoneurones in the cat: facilitatory interactions
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- PMID: 1336583
- DOI: 10.1016/0168-0102(92)90015-5
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Descending pathways mediating disynaptic excitation of dorsal neck motoneurones in the cat: facilitatory interactions
Neurosci Res.
1992 Oct.
Abstract
Facilitatory interactions between disynaptic EPSPs evoked from the contralateral tectum, ipsilateral tegmentum and contra- and/or ipsilateral pyramid have been investigated in dorsal neck motoneurones of the cat. Monosynaptic convergence on common intercalated neurones was found from ipsi- and contralateral pyramidal, contralateral tectal and ipsilateral tegmental fibres. In addition, disynaptic facilitation was observed from ipsilateral pyramidal fibres on disynaptic contralateral pyramidal EPSPs. Transection of cortico-fugal fibres in the pyramid showed that the location of the interactions occurred in the lower brain stem, suggesting that reticulospinal neurones are mediating the effects.
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