Units responding to manual stretch of single eye muscles were localized in the mesodiencephalic region of the lamb. Responses of the type induced by muscle spindle excitation were recorded from ipsilateral medial lemniscus, tegmentum and tectum of both colliculi and from ipsilateral posteroventrolateral nuclei of the thalamus. From the same mesodiencephalic points activated by stretch of individual eye muscles typical evoked potentials could be recorded following single-shock electrical stimulation...
Cells responsive to stretching individual eye muscles were identified electrophysiologically in the medial dorso-lateral part of the semilunar ganglion of the Lamb. The destruction of such a cellular pool was followed by degeneration of some spindles in those eye muscles whose stretch had elicited responses of the gasserian cells and of some nervous fibers in the ophthalmic branch, in the sensory trigeminal root and in the ipsilateral descending trigeminal tract. The degenerations ended in the pars...
The aim of this investigation was to analyse in nembutalized and curarized lambs a somatotopic organization of extraocular muscle proprioceptive afferents in the superior colliculus. Responses to moderate manual stretch on individual eye muscles were recorded by means of tungsten microelectrodes, along the dorso-ventral axis in the superficial layers of the superior colliculus. The mesencephalic representation of the eye muscle proprioception was somatotopically arranged in the following manner:...
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