Abstract:
:Four experiments studied the opioid receptor subtype and signal transduction mechanisms mediating fear extinction in the ventrolateral quadrant of the midbrain periaqueductal gray (vlPAG). Microinjection of a mu- but not a delta- or kappa-opioid receptor antagonist into the vlPAG retarded extinction. Extinction was also dose-dependently retarded by vlPAG infusions of a cyclic AMP (cAMP) analog but was unaffected by infusions of a protein kinase A activator or a mitogen-activated protein kinase inhibitor across wide dose ranges. The results show that fear extinction occurs via activation of vlPAG mu-opioid receptors and involves reductions in cAMP. These mechanisms are different from the cellular mechanisms for extinction in the amygdala and from the known cellular mechanisms for opioid analgesia in the vlPAG.
journal_name
Behav Neuroscijournal_title
Behavioral neuroscienceauthors
McNally GP,Lee BW,Chiem JY,Choi EAdoi
10.1037/0735-7044.119.4.1023subject
Has Abstractpub_date
2005-08-01 00:00:00pages
1023-33issue
4eissn
0735-7044issn
1939-0084pii
2005-11024-017journal_volume
119pub_type
杂志文章abstract::Although mnemonic interpretations of hippocampal function in people have been readily accepted for many years, similar interpretations of hippocampal function in animals have received a number of challenges. This article reviews two of these challenges, shows how they were resolved in favor of some kind of mnemonic in...
journal_title:Behavioral neuroscience
pub_type: 杂志文章,评审
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pub_type: 杂志文章
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:
更新日期:2002-08-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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更新日期:2003-02-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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更新日期:2012-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1037//0735-7044.103.1.84
更新日期:1989-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:1997-02-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:10.1037/0735-7044.119.5.1339
更新日期:2005-10-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:10.1037/0735-7044.121.5.1095
更新日期:2007-10-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:10.1037//0735-7044.103.4.893
更新日期:1989-08-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章,评审
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:10.1037//0735-7044.103.6.1176
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:10.1037//0735-7044.101.2.179
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:10.1037//0735-7044.109.6.1095
更新日期:1995-12-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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更新日期:2009-04-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
doi:
更新日期:1984-06-01 00:00:00
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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更新日期:2005-04-01 00:00:00
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pub_type: 杂志文章
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journal_title:Behavioral neuroscience
pub_type: 杂志文章
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pub_type: 杂志文章
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