Posted by Chairman_MAO on May 14, 2009, at 16:03:34
In reply to neurotransmitters and eye dialation, posted by Garnet71 on February 24, 2009, at 22:04:43
Mydriasis (dilation of the pupil) is controlled
by the radial muscle in the iris via sympathetic innervation. The parasympathetic nervous system innervates the circular muscle, which constricts the iris. Dilation is directly mediated via a1-adrenergic receptors. During sexual arousal,
mydriasis is induced by oxytocin release.Opioids induce miosis, not mydriasis. And, for
what it's worth, IMHO it makes more sense to
conceptualize the effects of certain drugs as being similar to love rather than the other way around. See _Love and Addiction_ by Stanton Peele. Lou Reed wrote in the song "Heroin":
"It's my wife and it's my life".There is no such thing as a "neurotransmitter deficiency" in this context; neural activity is far more complex than topping off a gas tank.
poster:Chairman_MAO
thread:882278
URL: http://www.dr-bob.org/babble/neuro/20090129/msgs/895788.html