Abstract
What is the beta focus? What are the conditions of its appearance? What are its functional characteristics? What is its pathologic significance? This study attempts to deal with these questions on the basis of evidence obtained in a series of clinical cases. 49 patients showing focally enhanced beta activity were studied. 90 percent of these patients had undergone craniotomies. All of the 10 patients in whom the beta focus was the only abnormality had been operated. Analysis of the location, time course, electrical characteristics, and responsivity of the beta focus has failed to provide a specific explanation for its appearance. No data suggested that the beta focus signified the presence of an active or expanding lesion. The evidence in this study suggests that operative trauma is in some way a predisposing factor to the appearance of the beta focus, but that the phenomenon is due to localized cerebral dysfunction rather than the purely physical effects of absence of bone.
| Original language | English |
|---|---|
| Pages (from-to) | 191-203 |
| Number of pages | 13 |
| Journal | Acta Neurologica Scandinavica |
| Volume | 48 |
| Issue number | 2 |
| DOIs | |
| State | Published - May 1972 |
| Externally published | Yes |