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
The Widening Gyre (album) of their new album to be released in Ireland on 20 February 2015, in the UK on 23 February 2015 and in the US on 24 February 2015. And as they borrowed the title from "The Second Coming", one of W. B. Yeats poems, the first Irishman to be awarded the Nobel Prize for Literature in 1923. Altan's official website published a presentation of their new studio album "The Widening Gyre" giving many details about the new album: the new musical direction taken by the band, the album recording process and the participation of numerous guest musicians as well as