. Diseases of the nervous system . et Breathing. Speech Respiration. Quiet Breathing. Fig. 145.—Diagram showing the normal process of speech in man, taken with the Gutzmalin-Oehmecke girdle pneumograph. I, inspiration. E, expiration. and inhibitive, in part a reflex effect upon speech. We found these prolifera-tions—and I have included only those cases in which they were large enoughto protrude above the upper choanal border and thereby visibly hindered res-piration—in per cent, of the cases, that is about three times as frequently CENTRAL DISTURBANCES: STAMMERING 337 as among normal scho
. Diseases of the nervous system . et Breathing. Speech Respiration. Quiet Breathing. Fig. 145.—Diagram showing the normal process of speech in man, taken with the Gutzmalin-Oehmecke girdle pneumograph. I, inspiration. E, expiration. and inhibitive, in part a reflex effect upon speech. We found these prolifera-tions—and I have included only those cases in which they were large enoughto protrude above the upper choanal border and thereby visibly hindered res-piration—in per cent, of the cases, that is about three times as frequently CENTRAL DISTURBANCES: STAMMERING 337 as among normal school-children. I do not intend hj this statement to main-tain that adenoid vegetations are the cause of stammering, for if this wereactually the case there would be more stammerers. But they secondarily causean impediment in speech acting on a neuropathic predisposition. Such im-pediments occur only in those persons who are very susceptible to irritationswhich in normal persons would produce no reaction! We frequently observe,. Quiet Respiration. Marked Stuttering. Quiet Respiration. Fig. 146.—Stuttering in a girl, aged 21. Taken with the Gutzmann-Oehmecke girdle pneumograph. and this may be done by any one who has practical experience in disturbancesof speech, that an acute coryza during the course of treatment will cause asevere relapse in a stammerer. That this relapse is a reflex phenomenon isobvious from the fact that in some cases it may at once be relieved by cocain-izing the nose. It is impossible for me to give a better illustration of thefact that in persons who stutter the wave of irritation is more deeply situatedthan in normal persons, that, accordingly, they must be regarded as nervousor neurasthenic with a neuropathic predisposition. By plugging the nose withcotton, I have in some cases succeeded in reproducing the stuttering in a fewminutes. We may here observe what is almost a parallel between stutteringand asthma as reflex phenomena. Symptoms.—The symp
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