Dopamine is necessary for cue-dependent fear conditioning
Open accessAbstract
Dopamine (DA) is implicated in many behaviors, including motor function, cognition, and reward processing; however, the role of DA in fear processing remains equivocal. To examine the role of DA in fear-related learning, dopamine-deficient (DD) mice were tested in a fear-potentiated startle paradigm. DA synthesis can be restored in DD mice through administration of 3, 4-dihydroxy-l-phenylalanine (l-Dopa), thereby permitting the assessment of fear processing in either a DA-depleted or -replete state. Fear-potentiated startle was absent in DD mice but could be restored by l-Dopa administration immediately after fear conditioning. Selective viral-mediated restoration of DA synthesis within the ventral tegmental area fully restored fear learning in DD mice, and restoration of DA synthesis to DA neurons projecting to the basolateral amygdala restored short-term memory but not long-term memory or shock sensitization. We also demonstrate that the DA D(1) receptor (D(1)R) and D(2)-like receptors are necessary for cue-dependent fear learning. These findings indicate that DA acting on multiple receptor subtypes within multiple target regions facilitates the stabilization of fear memory.
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Learning of responses to aversive stimuli in rodents during fear conditioning is inhibited by dopaminergic antagonists.
“learning of responses to aversive stimuli in rodents (ie. during fear conditioning) is inhibited by dopaminergic antagonists [66–68].”
From A neoHebbian framework for episodic memory; role of dopamine-dependent late LTP (2011) · cites this paper as [66]
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- Authors
- Fadok, J. P., Dickerson, T. M. K., & Palmiter, R. D.
- Affiliations
- University of Washington (US)
- Howard Hughes Medical Institute (US)
- Venue
- The Journal of Neuroscience
- Publisher
- Society for Neuroscience
- Published
- 2009-09-09
- Volume
- 29
- Issue
- 36
- Pages
- 11089-11097
- ISSN
- 0270-6474 (ISSN-L)
- 1529-2401
- PMC
- PMC2759996
- OpenAlex
- W2060210617
- Cited by
- 213
- References
- 67
- Citations by year
- 2026: 6 · 2025: 15 · 2024: 12 · 2023: 13 · 2022: 10 · 2021: 13 · 2020: 10 · 2019: 18 · 2018: 13 · 2017: 8 · 2016: 19 · 2015: 15 · 2014: 9 · 2013: 9 · 2012: 15
- FWCI
- 6.94
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Howard Hughes Medical Institute
- National Institutes of Health
- National Human Genome Research Institute (R25HG007153)
- National Institute of General Medical Sciences (GM-07270, T32-GM07270, T32GM007270, R25GM058501)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Keywords
- dopamine, fear memory, L-DOPA, ventral tegmental area, basolateral amygdala, dopamine D1 receptor, D2-like receptors, fear-potentiated startle, short-term memory
- MeSH terms
- Animals, Conditioning, Psychological, Cues, Dopamine, Fear, Female, Male, Mice, Inbred C57BL, Mice, Transgenic, Receptors, Dopamine, Reflex, Startle, Mice, Knockout, Mice
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