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) Ireland, UK, Altan performed live no less than 10 songs (out of 14) from "The Widening Gyre": The Widening Gyre (album) The Widening Gyre is the twelfth studio album by Irish folk music group Altan and their eleventh studio album of original material, released in February 2015 on the Compass Records label. It was released to critical acclaim. This is the first studio album of original material to be released by Altan in almost 3 years since the release of "Gleann Nimhe – The Poison Glen" in 2012. This is also the first Altan album to feature new band member