5-HT tests.

[mr fish]

BilZ0r <BilZ0r at TAKETHISOUThotmail.com> wrote in message news:<Xns935FB1D0B7FA8BilZ0rhotmailcom at 202.20.93.13>...
> This is really more of a neurology question than a neuroscience one, but;
> 
> Does anyone know any physical tests one can do on a subject to see if there 
> is antagonism/agonism at any/all of the 5-HT receptors.
> 
> I mean something along the lines of the strech reflex is inhanced by 
> someone taking a dopamine agonist. Any pupillary reflexs are dulled by 
> Muscarinic antagonists.
> 
> On a similar note, is anyone exactly sure why MDMA and other psychoactives 
> cause pupil dilation? I've heard people say 5-HT2a is the cause, but I know 
> LSD is a peripheral antagonist of it.
> 
> ANy ideas?

well, I'm not an expert, but pupil dilation can also be observed in
persons on ssri's.