The continued use of the subcerebellar route for section of the posterior root of the trigeminal nerve in tic douloureux has led to observations that, I believe, offer evidence that the gasserian ganglion mediates a definite function which in large degree modifies the afferent sensory impressions en route to the brain. Doubtless, what holds true for the trigeminal ganglion is equally pertinent for the ganglia of the other cranial nerves carrying sensory stimuli of the same character. Doubtless, too, comparative modifications of function, though of altered character dependent on differing afferent functions, likewise exist for other sensory ganglia.
The data of experimental character are in large part derived from subtotal sections of the sensory root of the nervus trigeminus. Obviously there is almost no opportunity of making or even of testing such experimental observations in animals. From a series of approximately 200 cases, partial section of the root in varying
DANDY WE. CERTAIN FUNCTIONS OF THE ROOTS AND GANGLIA OF THE CRANIAL SENSORY NERVES. Arch NeurPsych. 1932;27(1):22–29. doi:https://doi.org/10.1001/archneurpsyc.1932.02230130028002
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