Format

Send to

Choose Destination
PLoS One. 2010 Oct 27;5(10):e15401. doi: 10.1371/journal.pone.0015401.

Balanced dopamine is critical for pattern completion during associative memory recall.

Author information

1
Department of Developmental and Behavioral Pediatrics of Shanghai Children's Medical Center & Shanghai Key Laboratory of Children's Environmental Health, XinHua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Abstract

Pattern completion, the ability to retrieve complete memories initiated by partial cues, is a critical feature of the memory process. However, little is known regarding the molecular and cellular mechanisms underlying this process. To study the role of dopamine in memory recall, we have analyzed dopamine transporter heterozygous knockout mice (DAT(+/-)), and found that while these mice possess normal learning, consolidation, and memory recall under full cue conditions, they exhibit specific deficits in pattern completion under partial cue condition. This form of memory recall deficit in the dopamine transporter heterozygous knockout mice can be reversed by a low dose of the dopamine antagonist haloperidol, further confirming that the inability to retrieve memory patterns is a result of dopamine imbalance. Therefore, our results reveal that a delicate control of the brain's dopamine level is critical for pattern completion during associative memory recall.

PMID:
21060884
PMCID:
PMC2965183
DOI:
10.1371/journal.pone.0015401
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Public Library of Science Icon for PubMed Central
Loading ...
Support Center