Properties of Vestibulo-Thalamic Neurons Projecting to the Spinal Cord in the Cat.
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The properties of vestibulo-thalamic (VT) neurons projecting to the spinal cord were investigated in anesthetized cats. Forty VT neurons were recorded extracellularly ; 68% (27/40) of them responded monosynaptically from the posterior part of the contralateral thalamus, including VPL (nucleus ventralis posterolateralis), VPM (nucleus ventralis posteromedialis), VL (nucleus ventralis lateralis), SG (nucleus suprageniculatus) and PO (nucleus posteriores). A microstimulation technique showed that their axons arborized in narrow areas in the thalamus. About three quarters (17/22) of the VT neurons were also activated antidromically from the ventral funiculus in the C<SUB>1</SUB> segment of the spinal cord. Axonal branchings were investigated with the microstimulation technique and found in the contralateral C<SUB>1</SUB>gray matter. The VT neurons both with and without descending axons were localized mainly in the descending vestibular nucleus.
- 一般社団法人 日本めまい平衡医学会の論文
一般社団法人 日本めまい平衡医学会 | 論文
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