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) critic Lee Zimmerman, stating: ""The Widening Gyre" is a defining moment for Altan. [...] [It] is much more than a mere scholarly treatise. The energy and enthusiasm are palatable, and there's a sense of celebration that echoes throughout. [...] Altan has made the kind of album that defines them as distinctive." "Irish Music Magazine"'s critic Eileen McCabe, stated: "Altan are just at the start of their next chapter and having shown their inimitable metal with "The Widening Gyre"; they have set the standard at an all time high." "Folkworks" reviewer Anya Sturm, stated: "Altan's new CD "The Widening Gyre" is