Automatic-voluntary dissociation: an unusual facial paresis in a patient with probable multiple sclerosis.
A patient with multiple sclerosis is described who presented with a unilateral loss of voluntary function of his lower face muscles. However, in an emotional situation, there was strong involuntary innervation of these muscles: automatic-voluntary dissociation. The subcortical afferents to the facial motor nucleus are discussed. It is hypothesized that cortical disinhibition of midbrain nuclei underlies the accentuated involuntary innervation.
Eblen
F
F
Neurologische Universitätsklinik, Tübingen, Federal Republic of Germany.
Weller
M
M
Dichgans
J
J
D000328:Adult; D001921:Brain / Q000473:pathology; D002220:Carbamazepine / Q000627:therapeutic use; D005149:Facial Expression; D005152:Facial Muscles / Q000294:innervation / Q000503:physiopathology; D005158:Facial Paralysis / Q000188:drug therapy / Q000209:etiology / Q000503:physiopathology*; D007839:Functional Laterality; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009103:Multiple Sclerosis / Q000150:complications / Q000175:diagnosis
D002220:Carbamazepine