For example, in pain experiments, a conditioning stimulus, such as immersing an extremity into painful cold water, might induce a temporary change in the threshold (Pud et al., 2009).
The main findings were (1) Chronic pain experiments in animals showed that the stimulation of the anterior part of the PVN increased OT concentration and produced analgesia states, as measured by von Frey, cold, and heat plantar tests.
Since this pathway has previously been shown to be involved in the antihyperalgesic effect induced by some drugs including opiates on inflammatory pain, experiments were also performed in inflamed mice.
Nevertheless, the simplicity of this test makes it applicable in most pain experiments and may therefore provide information about the involved nerve fibers that otherwise had not been acquired at all.
Guidelines for pain experiments on conscious animals were adhered to throughout the experiments.
These adhered to the guidelines for pain experiments in awake animals.
For the experiments involving morphine administration (Labesfal), this analgesic was given in a dose of 5 mg·kg−1 for the acute pain experiments (tail flick and hot plate tests) and 6 mg·kg−1 for chronic pain models (monoarthritis and neuropathic pain).
The study used the experimental paradigm of pain empathy experiment by Jackson, and 2 × 2 two-factor mixed experimental design.
In this article we provide a guideline for designing, reading, evaluating, analyzing, and reporting results of a pain neuroimaging experiment, with a focus on functional and structural magnetic resonance imaging.
He spent his "play time" capturing bugs, then conducting pain management experiments on them.
