Vestibulo-Thalamic Projections Studied With Antidromic Technique in the Cat

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Abstract
The vestibulo-thalamic projection was investigated in anaesthetized cats. Electrical stimulation of posterolateral thalamic areas frequently changed the spontaneous firing pattern of neurons in the vestibular nuclei but only 5 % were antidromically invaded. This group was further analysed with regard to types of labyrinthine and somatosensory input; thalamo-projecting neurons in the vestibular nuclei are frequently located in the lateral vestibular nucleus, they receive no monosynaptic inflow from the labyrinth and they often receive convergent vestibular and somatosensory input.