PubMed · 727650
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J Conley. 1978. Radical neck dissection.. https://doi.org/10.1097/00000637-197801000-00006
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Stimulation of the trigeminal nerve produced polysynaptic inhibitory postsynaptic potentials (IPSPs) in accessory motoneurons of the cat. This contrasts with the observation that dorsal cervical motoneurons responded with EPSPs to trigeminal stimulus. Stimulation of the rostral part of spinal trigeminal nucleus elicited di- or polysynaptic IPSPs in accessory motoneurons. Transection of the anterior funiculus at the upper cervical cord selectively abolished the IPSPs. The IPSPs were antagonized by systematically administrated strychnine but not bicuculline.
Stimulation of the accessory nerve evoked polysynaptic excitatory postsynaptic potentials (EPSPs) in the facial nucleus (FN) neurons of anesthetized cats. From the experiments with severance of C1-C3 dorsal roots, it is suggested that accessory afferents enter the brainstem through the accessory nerve. It was also found that stimulation of the solitary tract nucleus produced exclusively monosynaptic EPSPs in the FN neurons and the afferent volleys are most likely to be relayed at the solitary tract nucleus.
We report a patient with spontaneous recovery and recurrence of a jugular foramen syndrome secondary to an accessory nerve neuroma. He showed sudden onset of unilateral palsy of the ninth, tenth and eleventh cranial nerves in 1982. He recovered almost fully and in 1990 the palsies recurred. MRI revealed a small mass in the right jugular foramen. The tumour was resected via suboccipital craniectomy, and diagnosed as a neuroma of the eleventh cranial nerve.