Publication Date:
2011-08-06
Description:
Updating of working memory has been associated with striato-frontal brain regions and phasic dopaminergic neurotransmission. We assessed raclopride binding to striatal dopamine (DA) D2 receptors during a letter-updating task and a control condition before and after 5 weeks of updating training. Results showed that updating affected DA activity before training and that training further increased striatal DA release during updating. These findings highlight the pivotal role of transient neural processes associated with D2 receptor activity in working memory.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Backman, Lars -- Nyberg, Lars -- Soveri, Anna -- Johansson, Jarkko -- Andersson, Micael -- Dahlin, Erika -- Neely, Anna S -- Virta, Jere -- Laine, Matti -- Rinne, Juha O -- New York, N.Y. -- Science. 2011 Aug 5;333(6043):718. doi: 10.1126/science.1204978.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Aging Research Center, Karolinska Institute, 171 77 Stockholm, Sweden. lars.backman.1@ki.se〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21817043" target="_blank"〉PubMed〈/a〉
Keywords:
Adult
;
Corpus Striatum/*metabolism/radionuclide imaging
;
Dopamine/*metabolism
;
Humans
;
*Learning
;
Male
;
*Memory, Short-Term
;
Positron-Emission Tomography
;
Raclopride/metabolism
;
Receptors, Dopamine D2/*metabolism
;
Young Adult
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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