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L-Allylglycine dissociates the neural substrates of fear in the periaqueductal gray of rats
(PERGAMON-ELSEVIER SCIENCE LTD, 2010)
The dorsal (dPAG) and ventral (vPAG) regions of the periaqueductal gray are well known to contain the neural substrates of fear and anxiety. Chemical or electrical stimulation of the dPAG induces freezing, followed by a ...
Dorsal raphe nucleus regulation of a panic-like defensive behavior evoked by chemical stimulation of the rat dorsal periaqueductal gray matter
(ELSEVIER SCIENCE BV, 2010)
Electrical or chemical stimulation of the dorsal periaqueductal gray matter (DPAG) evokes escape, a defensive behavior that has been related to panic attacks. Injection of 5-HT(1A) or 5-HT(2A) receptor agonists into this ...
Dorsal periaqueductal gray stimulation facilitates anxiety-, but not panic-related, defensive responses in rats tested in the elevated T-maze
(Associação Brasileira de Divulgação Científica, 2012)
The escape response to electrical or chemical stimulation of the dorsal periaqueductal gray matter (DPAG) has been associated with panic attacks. In order to explore the validity of the DPAG stimulation model for the study ...
Involvement of GABAergic mechanisms of the dorsal periaqueductal gray and inferior colliculus on unconditioned fear
(Pontificia Universidade Católica do Rio de JaneiroUniversidade de BrasíliaUniversidade de São Paulo, 2009)
The fact that the dorsal periaqueductal gray (dPAG) and inferior colliculus (IC), together with superior colliculus, medial hypothalamus and amygdala, constitute the brain aversion system has been well-established. Stepwise ...
Physical environment modulates the behavioral responses induced by chemical stimulation of dorsal periaqueductal gray in mice
(Elsevier B.V., 2006-09-01)
In order to investigate the relationship between behaviors elicited by chemical stimulation of the dorsal periaqueductal gray (dorsal PAG) and spontaneous defensive behaviors to a predator, the excitatory amino acid ...
Physical environment modulates the behavioral responses induced by chemical stimulation of dorsal periaqueductal gray in mice
(Elsevier B.V., 2006-09-01)
In order to investigate the relationship between behaviors elicited by chemical stimulation of the dorsal periaqueductal gray (dorsal PAG) and spontaneous defensive behaviors to a predator, the excitatory amino acid ...
The lateral habenula regulates defensive behaviors through changes in 5-HT-mediated neurotransmission in the dorsal periaqueductal gray matter
(ELSEVIER IRELAND LTD, 2010)
Chemical stimulation of the lateral nucleus of the habenula (LHb), an area implicated in the regulation of serotonergic activity in raphe nuclei, affects the acquisition of inhibitory avoidance and escape expression of ...
Anxiolytic-like effects produced by bilateral lesion of the periaqueductal gray in mice: Influence of concurrent nociceptive stimulation
(Elsevier B.V., 2009-11-05)
Threatening situations (e.g., exposure to an elevated plus-maze with four open arms - oEPM) induce behavioral and neurovegetative responses generally accompanied by antinociception animals. The midbrain periaqueductal gray ...
Anxiolytic-like effects produced by bilateral lesion of the periaqueductal gray in mice: Influence of concurrent nociceptive stimulation
(Elsevier B.V., 2009-11-05)
Threatening situations (e.g., exposure to an elevated plus-maze with four open arms - oEPM) induce behavioral and neurovegetative responses generally accompanied by antinociception animals. The midbrain periaqueductal gray ...