Dopamine modulates attentional control of auditory perception: DARPP-32 (PPP1R1B) genotype effects on behavior and cortical evoked potentials

NEUROPSYCHOLOGIA

卷:51

Article

Li, Shu-Chen^1,2  Passow, Susanne^1,3  Nietfeld, Wilfried⁴  Schroeder, Julia⁴  Bertram, Lars⁴  Heekeren, Hauke R.⁵  Lindenberger, Ulman¹ 

[1] Max Planck Inst Human Dev, Ctr Lifespan Psychol, D-14195 Berlin, Germany

[2] Tech Univ Dresden, Dept Psychol, D-01062 Dresden, Germany

[3] Univ Bergen, Dept Biol & Med Psychol, N-5009 Bergen, Norway

[4] Max Planck Inst Mol Genet, Dept Vertebrate Genom, D-14195 Berlin, Germany

[5] Free Univ Berlin, Dept Psychol & Educ Sci, D-14195 Berlin, Germany

关键词: Attention;    Selective attention;    Conflict monitoring;    Auditory processing;    Dopamine;    Evoked potentials;    DARPP-32;    PPP1R1B;   

DOI  :  10.1016/j.neuropsychologia.2013.04.005

来源: Elsevier

【 摘 要 】

Using a specific variant of the dichotic listening paradigm, we studied the influence of dopamine on attentional modulation of auditory perception by assessing effects of allelic variation of a single-nucleotide polymorphism (SNP) rs907094 in the DARPP-32 gene (dopamine and adenosine 3', 5'-monophosphate-regulated phosphoprotein 32 kilodations; also known as PPP1R1B) on behavior and cortical evoked potentials. A frequent DARPP-32 haplotype that includes the A allele of this SNP is associated with higher mRNA expression of DARPP-32 protein isoforms, striatal dopamine receptor function, and frontal striatal connectivity. As we hypothesized, behaviorally the A homozygotes were more flexible in selectively attending to auditory inputs than any G carriers. Moreover, this genotype also affected auditory evoked cortical potentials that reflect early sensory and late attentional processes. Specifically, analyses of event-related potentials (ERPs) revealed that amplitudes of an early component of sensory selection (N1) and a late component (N450) reflecting attentional deployment for conflict resolution were larger in A homozygotes than in any G carriers. Taken together, our data lend support for dopamine's role in modulating auditory attention both during the early sensory selection and late conflict resolution stages. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

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