Pupillary response Pupillary response Pupillary response is a physiological response that varies the size of the pupil, via the optic and oculomotor cranial nerve. A constriction response (miosis), is the narrowing of the pupil, which may be caused by scleral buckles or drugs such as opiates/opioids or anti hypertension medications. Constriction of the pupil occurs when the circular muscle, controlled by the parasympathetic nervous system (PSNS), contracts. A dilation response (mydriasis), is the widening of the pupil and may be caused by adrenaline, anticholinergic agents or drugs such as MDMA, cocaine, amphetamines and some hallucinogenics. Dilation of the pupil occurs when the
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