Mydriasis iris sphincter, composed of circularly arranged muscle fibers, and the iris dilator, composed of radially arranged muscle fibers. The sphincter is innervated by (signaled by nerves of) the parasympathetic nervous system, and the dilator by the sympathetic nervous system. Sympathetic stimulation of the adrenergic receptors causes the contraction of the radial muscle and subsequent dilation of the pupil. Conversely, parasympathetic stimulation causes contraction of the circular muscle and constriction of the pupil. The mechanism of mydriasis depends on the agent being used. It usually involves either a disruption of the parasympathetic nerve supply to the eye (which normally constricts the
The "What Time Is Love?" Story The "What Time Is Love?" Story The "What Time Is Love?" Story is a compilation album by British electronic music duo The KLF, comprising six versions of their techno track "What Time Is Love?". By 1989 (see 1989 in music), the popularity of the "Pure Trance Original" of "What Time Is Love?" in European clubs had reportedly spawned eighteen unauthorised cover versions and sound-alikes. In a novel move, some of these were collated by The Orb's Alex Paterson at The KLF's behest, and released as a compilation album entitled "The "What Time Is Love?" Story", which was sold commercially for