24 



G. H. MONRAD-KROHN. 



M.-N. KL 



not respond at all.. The orbicularis oculi showed no reaction whatever — 

 nor did the corrugatores. All the other fac'al muscles gave a slow con- 

 traction ; but the relation between K. C. C; and A. C. C. remained normal. 

 In the frontal muscle the motor points had been transformed into "a motor 

 line" running parallel to the eyebrows; but the galvanic irritability was 



not uniformly extended to the whole muscle. 



This diflFerence in the reaction between 



the different facial muscles is in itseli pretty 



characteristic. In early cases changes in 



the reaction to electric irritation may — 



like the paralysis itself — be confined to 



individual muscles or even parts of muscles. 



The farradic irritation of the facial 



trunk sometimes causes contractions of only 



a few of the muscles (or parts of the 



muscles) innervated from the 7th nerve. 



Thus in case No. =;8 (I. A.) farradic irrita- 



\-^^ A » ^ / / tion of the left facial trunk only produced 



r\ *i,-- - ^' ,/>/ contractions of the supraoral muscles. 



To sum up, one will, as a rule, find 

 that the muscles do not all respond so 

 uniformly as they do normally to the farradic 

 irritation of the facial trunk — nor do they 

 fail to respond so uniformly as in ordi- 

 nary peripheral facial paralysis. 



As regards galvanic irritation great 



Fig. 8. (Case No. 41. B. K.) The case accuracy and attention to details are re- 

 is a typical illustration af a downward quired. As an example I shall only briefly 

 dislocation of the whole mouth due to ^^ention the result of the electrical exam- 



the facial paralysis. The teeth of the . . , , , , . , . 



, . ' • J- , mation 01 the frontalis muscle in case 



lower jaw are seen immediately un- 

 derneath the upper Hp. The lower No. 35 (M. M.). As will be seen from the 

 lip is seen to hang by the frenulum, preceding tabulated list of findings, the 

 Destruction of nasal bones. Lagoph- right half of the frontal muscle contracts 

 talmus and ectropion af medial halves ^pparentlv normally, while the left half is 



of lower eye-lids on both sides. The . . " . 



,- . , ,..c ,. distinctly paretic. Irritation ot the motor 



patient has some difficulté' in pro- -^ ^ 



nouncing b. p. and m. Constant dribb- points with a galvanic Current of I milli- 

 ling of saliva. ampère gave the following results : 





rigJü side 

 K. C. C. + 

 A. C. C. -^ 



left side 

 K. C. C. + 

 A. C. C. + 



(K. C. C. = Kathodic closure contraction, 

 A. C. C. = anodic closure contraction). 



