Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
30
pubmed:dateCreated
2011-7-28
pubmed:abstractText
Phasic activation of dopaminergic neurons is associated with reward-predicting cues and supports learning during behavioral adaptation. While noncontingent activation of dopaminergic neurons in the ventral tegmental are (VTA) is sufficient for passive behavioral conditioning, it remains unknown whether the phasic dopaminergic signal is truly reinforcing. In this study, we first targeted the expression of channelrhodopsin-2 to dopaminergic neurons of the VTA and optimized optogenetically evoked dopamine transients. Second, we showed that phasic activation of dopaminergic neurons in freely moving mice causally enhances positive reinforcing actions in a food-seeking operant task. Interestingly, such effect was not found in the absence of food reward. We further found that phasic activation of dopaminergic neurons is sufficient to reactivate previously extinguished food-seeking behavior in the absence of external cues. This was also confirmed using a single-session reversal paradigm. Collectively, these data suggest that activation of dopaminergic neurons facilitates the development of positive reinforcement during reward-seeking and behavioral flexibility.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1529-2401
pubmed:author
pubmed:issnType
Electronic
pubmed:day
27
pubmed:volume
31
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
10829-35
pubmed:meshHeading
pubmed-meshheading:21795535-Analysis of Variance, pubmed-meshheading:21795535-Animals, pubmed-meshheading:21795535-Bacterial Proteins, pubmed-meshheading:21795535-Conditioning, Operant, pubmed-meshheading:21795535-Discrimination (Psychology), pubmed-meshheading:21795535-Dopamine, pubmed-meshheading:21795535-Electric Stimulation, pubmed-meshheading:21795535-Electrochemical Techniques, pubmed-meshheading:21795535-Gene Expression Regulation, pubmed-meshheading:21795535-Luminescent Proteins, pubmed-meshheading:21795535-Male, pubmed-meshheading:21795535-Mice, pubmed-meshheading:21795535-Mice, Transgenic, pubmed-meshheading:21795535-Neurons, pubmed-meshheading:21795535-Photic Stimulation, pubmed-meshheading:21795535-Reward, pubmed-meshheading:21795535-Rhodopsin, pubmed-meshheading:21795535-Time Factors, pubmed-meshheading:21795535-Tyrosine 3-Monooxygenase, pubmed-meshheading:21795535-Ventral Tegmental Area
pubmed:year
2011
pubmed:articleTitle
Optogenetic interrogation of dopaminergic modulation of the multiple phases of reward-seeking behavior.
pubmed:affiliation
Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California 94305, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural