Heart rate persons with coronary artery disease. The heart rate is rhythmically generated by the sinoatrial node. It is also influenced by central factors through sympathetic and parasympathetic nerves. Nervous influence over the heartrate is centralized within the two paired cardiovascular centres of the medulla oblongata. The cardioaccelerator regions stimulate activity via sympathetic stimulation of the cardioaccelerator nerves, and the cardioinhibitory centers decrease heart activity via parasympathetic stimulation as one component of the vagus nerve. During rest, both centers provide slight stimulation to the heart, contributing to autonomic tone. This is a similar concept to tone in skeletal muscles. Normally, vagal stimulation
The Centre of the Heart although multiple promotional singles were issued which titled the track "The Centre of the Heart (Is a Suburb to the Brain)". Non-album track "Entering Your Heart" appears as a b-side on most editions of the single. An extended version of the b-side, containing an extra verse, also appeared on Japanese editions of "Room Service". A maxi single was also issued, containing four remixes of the song by Swedish DJ StoneBridge, as well as an additional remix created by Jens Bjurman and Per Kalenius, titled the 'Yoga Remix'. The StoneBridge Club Mix was featured in several "Dance Dance Revolution" video games