Table 3.

Cannabinoid agonists and analgesia³

Site	Type	Effect	References
Systemic	Agonist	Analgesia	(Martin et al., 1999; Meng et al., 1998)
	Antagonist	Hyperalgesia	(Meng et al., 1998)
Cingulate	Agonist	None	(Martin et al., 1999)
BLA	Agonist	Analgesia	(Martin et al., 1999)
CeA	Agonist	Analgesia	(Martin et al., 1999)
NAc	Agonist	None	(Martin et al., 1999)
dlPAG	Agonist	Analgesia	(Martin et al., 1999)
RVM	Agonist	Analgesia	(Martin et al., 1999; Martin et al., 1998; Meng and Johansen, 2004)
	Agonist	Analgesia	(Martin et al., 1998)

³This table summarizes the effect of local and systemic injections of opioid agonists on pain.