Mydriasis eye, and also to reduce painful ciliary muscle spasm (see cycloplegia). One effect of administration of a mydriatic is intolerance to bright light (photophobia). Purposefully-induced mydriasis via mydriatics is also used as a diagnostic test for Horner's syndrome. Mydriasis can be induced via modulation of adrenergic or cholinergic signalling. Within the adrenergic system, norepinephrine is a hormone and neurotransmitter responsible for regulating physiological processes in the body, including the involuntary muscles of the autonomic nervous system (such as the dilation or constriction of the pupil aperture via the muscles of the iris). Modulation of norepinephrine signalling can induce mydriasis. For
The Widening Gyre (album) lots of new stuff to savor and some reinventions of recognizable material as well, interpreted by some of the best musicians you can find in roots music.". "The Widening Gyre" received a four star album review (out of 5) from The Irish Times's reviewer Siobhan Long, stating that Altan "have reinvigorated their sound in the process of [recording in] Nashville with newcomer Martin Tourish on piano accordion [and] an all-star cast [of Appalachian bluegrass musicians]". The Arts Desk website's music critic Peter Quinn, stated: "Listeners looking for the uniquely driving tune sets that Altan are famous for have plenty to