The effect of contextual constraint on parafoveal processing in reading.

Semantic preview benefit in reading is an elusive and controversial effect because empirical studies do not always (but sometimes) find evidence for it. Its presence seems to depend on (at least) the language being read, visual properties of the text (e.g.

[The characteristics of myocarditis in diphtheria in adults based on data from the 1993-1994 epidemic].

In 45% of 212 cases of diphtheria toxica in adults heart complications were observed. The earliest ECG signs are sinus bradycardia, AV dissociation, AV escape rhythms, prolongation of QT interval, high U wave (U > T, T + U wave). In the cases where differential diagnosis of myocarditis and other heart diseases in adults is difficult, the attention must be focused on the sickle-like depression ("sagging") of ST-interval that is a typical sign in diphtheric myocarditis.