[Conditional releasing of abnormal eye movements].
Some people are able to abduct and adduct just one of their eyes from maximum convergence position. Such a distribution of different tonus on both sides has a binocular-symmetric innervation pattern carried out on two chronological orders and a monocularasymmetric innervation pattern carried out on one chronological order. The latter is trainable. The voluntary nystagmus ist comparable to the muscle tremor (on coldness). It is mediated by the parasympathic-innervated reflex for near focussing. The relief of the brain stem automatism is a 'stigma degenerationis' and not trainable because it is a basic rhythm. An optokinetic nystagmus could be performed without stimulus by conditioned reflexes.
D003214:Conditioning, Classical; D005133:Eye Movements; D006801:Humans
Uber willkürlich auslösbare abnorme Augenbewegungen.