The effects of intraperitoneal (ip) or intrathecal (it) injection of antagonists of acetylcholine,
noradrenaline, serotonin, dopamine, opioids and GABA on stimulation-produced …

The effects of intrathecally (it) administered opioid antagonist naloxone (Nal), adenosine
antagonist aminophylline (Aph), and γ-aminobutyric acid (GABAA)-receptor antagonist …

This study examined the role of spinal GABAergic, serotoninergic and α2 adrenergic
receptors in the antinociception produced by the microinjection of equi-antinociceptive …

Inhibition of the spinal nociceptive tail flick (TF) reflex by electrical stimulation throughout the
midbrain and medulla was examined and characterized in pentobarbital-anesthetized rats …

Noxious (ie painful) stimulation in the rat induces profound heterosegmental antinociception
as demonstrated by the ability of either thermal stimulation (50° C water) or subdermal …

The electrical stimulation of the occipital (OC) or retrosplenial (RSC) cortex produces
antinociception in the rat tail-flick test. These cortices send inputs to the anterior pretectal …

Microinjection of dipyrone (metamizol) into the periaqueductal gray matter (PAG) in rats
causes antinociception. This is mediated by endogenous opioidergic circuits located in the …

This study examined the contribution of spinal δ1 and δ2 opioid receptors to the
antinociception produced by microinjection of l-glutamate in either the nucleus raphe …

Stimulation-evoked antinociception (SEA) from the anterior pretectal nucleus (APtN)
activates mechanisms that descend to the spinal cord through the dorsolateral funiculus, but …

After subcutaneous injection of formalin (5%, 50 μl) into a hindpaw of rats, biphasic
excitatory nociceptive discharges were recorded extracellularly in thalamic parafascicular …