brain-computer interface (BCI) Brain-computer interface (BCI) is a collaboration between a brain and a device that enables signals from the brain to direct some external activity, such as control of a cursor or a prosthetic limb. The interface enables a direct communications pathway between the brain and the object to be controlled.
If the QRS complex is wider than 0.12 seconds this is mostly caused by a delay in the conduction tissue of one of the bundle branches: 1  Left Bundle Branch Block (LBBB)) 2  Right Bundle Branch Block(RBBB) 3  Intraventricular conduction delay.
The majority of impulses originating in the ventricles have QRS of at least 0.12 s and a shift in the QRS vector, and most single PVCs or initiating beats for runs of ventricular ectopic activity are premature. They may fail to conduct to the atria or may demonstrate retrograde atrial activation.