Mydriasis pupil) or overactivity of the sympathetic nervous system (SNS). Pupil diameter also increases in reaction to cognitive tasks requiring memory and attention, and this phenomenon is used as an indicator of mental activation (‘arousal’) in psychophysiological experiments . Natural release of the hormone oxytocin can cause mild to moderate mydriasis. Parasympathetic fibers travel with cranial nerve III, the oculomotor nerve, to innervate the circular layer of muscle of the eye (sphincter pupillae). Damage to this nerve typically manifests itself as mydriasis, because the sympathetic supply to the pupil, which causes mydriasis, remains unaffected, and therefore unopposed. Multiple central nervous system
State River Widening The Leaf Label and at the end of the year began work on a new album, with ex-Laika mainstay Guy Fixsen assisting. That album, "Harps Old Master", was released in September 2006. State River Widening State River Widening, named after the title of a Chinese propaganda photo, are a London based trio, formed in May 1998, comprising multi-instrumentalists David Sheppard and Keiron Phelan, along with drummer/percussionist Jon Steele. Friends from school (in south London) Sheppard and Phelan began experimental recordings in 1996, soon hooking up with percussionist Steele to leaven their intertwining, Nick Drake-like acoustic guitars with vigorous yet dexterous