cocaine self-administration and yoking
BilZ0r at TAKETHISOUThotmail.com
Fri Aug 29 22:33:53 EST 2003
Whats also interesting, is that under these situations, dopamine (DA) is
not release in the Nucleus Accumbens (NAc).
I was lucky enough to hear a lecture by Prof Michael Joseph from the
School of Psychology, University of Leicester, who is an expert on
intercranial dialysis recordings of NAc DA activity. He commented on an
experiment, where, instead of another rat controlling the dosing regiem,
it was a human, and in this experiment, during the first couple random
human controlled doses, there was DA release, but then from then on it
papillae at anythingirish.ie (Christopher) wrote in
news:410b1d29.0308290209.2e068e1e at posting.google.com:
>> The effects of drugs depend on the behavioral context. A more
>> important question is why you think that the SA rat and the
>> yoked-cocaine rat would show the same effects.
> The effects should be the same as the reinforcement value of the drug
> remains constant. Why is it that denying instrumental control over
> delivery of food pellets does not exhibit the effect described whereas
> noncontingent injection of cocaine (yoking) does ???
> - Christopher
> P.S. Btw do rats find injection of sucrose solution rewarding ?
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