Ventricular tachycardia. Ventricular tachycardia (V-tach or VT) is a type of regular and fast heart rate that arises from improper electrical activity in the ventricles of the heart. Although a few seconds may not result in problems, longer periods are dangerous. Short periods may occur without symptoms or present with lightheadedness, palpitations, or chest pain.
The midbrain tegmentum contains thousands of neurons that are responsible for a variety of many functions, two of which include the control of movement and sensory systems. See also
It has three main parts: 1  The cerebrum fills up most of your skull. It is involved in remembering, problem solving, thinking, and feeling. 2  The cerebellum sits at the back of your head, under the cerebrum. It controls coordination and balance. 3  The brain stem sits beneath your cerebrum in front of your cerebellum. It connects the brain to the spinal cord and controls automatic functions such as breathing, digestion, heart rate and blood pressure.