The Brugada syndrome accounts for approximately 20% of cases of sudden cardiac death in patients with structurally normal hearts (1–3). The syndrome is characterized by an ST-segment elevation in right precordial leads (V1 to V3) unrelated to ischemia, electrolyte disturbances or obvious structural heart disease, and is sometimes accompanied by a right bundle branch block (RBBB) morphology of t...

Event-related potentials include not only the short duration evoked potentials (EPs) associated with sensory stimulation or motor response but also longer duration potentials such as the contingent negative variation, for which the eliciting events are more complex. For EPs there seems to be a relationship between the latency of the EP component and the degree of influence by more cognitive psy...

OBJECTIVES To assess the effects of chronic drinking on detection of low amplitude signals, and to determine the relation between late ventricular potentials (LVP) and liver biopsy findings. DESIGN Prospective study. SETTING General hospital. PATIENTS 41 consecutive chronic alcoholics without known pre-existing heart disease. METHODS About four days after each patient's last alcoholic d...

This study was conducted to assess the incidence of abnormalities of ventricular depolarization (late potentials) in children with sinus rhythm after open heart surgery and their relation to spontaneous ventricular tachycardia. Open heart surgery, particularly operations involving ventriculotomy, may predispose patients to the development of ventricular tachycardia (VT) or ventricular fibri...

Background: The P600 brain wave reflects syntactic processes in response to different first language (L1) syntactic violations, syntactic repair, structural reanalysis, and specific semantic components. Unlike semantic processing, aspects of the second language (L2) syntactic processing differ from the L1, particularly at lower levels of proficiency. At higher L2 proficiency, syntactic violatio...

BACKGROUND At least some clinical data suggests that, regardless of which major coronary artery is narrowed, the early ST segment body surface pattern is characterized by a minimum near precordial lead V5 and a broad area of left precordial negative potentials. Some clinical data also suggests that late ST segment potentials can localize an ischemic heart region. OBJECTIVE A computer model of...