Symptoms of brain tumours affecting the Frontal Lobe. The frontal lobes determine personality and contain the area called the motor cortex that controls movement of the muscles of the body (the motor cortex on the right half of the brain controls the left side of the body and vice versa).
Electrocardiogram Definition. A recording of the electrical activity of the heart. Abbreviated ECG and EKG. An ECG is a simple, noninvasive procedure. Electrodes are placed on the skin of the chest and connected in a specific order to a machine that, when turned on, measures electrical activity all over the heart.
ECG, EKG Cardiology A non-invasive test of the electrical activity of heart's conduction system, which is transformed into recordings on graph paperâan electrocardiograph; in an EKG, electrodesâleads are placed on 12 specific sites of the body: standard limb leadsâI, II, III, augmented limb leadsâaV r , aV l, and aV f, and precordial or chest leadsâV 1 to V 6; EKG tracings consist of 3 major components: the P wave, which indicates atrial depolarization, the QRS complex ...