The Relationship Between Valence, Task Difficulty, and the COMT Val 158 Met Polymorphism in Disengagement Processes
The Relationship Between Valence, Task Difficulty, and the COMT Val 158 Met Polymorphism in Disengagement Processes
复制标题
脱离过程中效价、任务难度和 COMT Val 158 Met 多态性之间的关系
DOI:
10.1027/0269-8803/a000075
复制
发表时间:
2012
影响因子:
1.3
通讯作者:
Herrmann
中科院分区:
文献类型:
--
作者:
Gschwendtner;Mühlberger;Sommer;Kübler;Herrmann
The catechol-O-methyltransferase (COMT) Val 158 Met polymorphism (rs4680) moderates dopamine degradation in the prefrontal cortex. It has been shown that the Met allele is associated with an increased reactivity to negative stimuli. With regard to the tonic-phasic dopamine model it is hypothesized that this increased reactivity to negative stimuli derives from deficient disengagement from negative stimuli. The aim of this study was therefore to investigate whether this increased reactivity is reflected in prolonged disengagement from negative pictures. We used a novel forced spatial disengagement task in combination with eye tracking. This paradigm allows for varying task difficulty. Interestingly, contrary to our hypothesis, we found increased disengagement latencies for negative pictures in homozygous Val allele carriers compared to heterozygous participants. This effect was only seen in task conditions demanding less cognitive resources (prosaccade condition). We suggest that the COMT effect on emotional processing is task-specific and therefore heterosis effects can occur.
登录
查看更多内容
影响因子:
4.6
作者:
P. Boudewyns;D. Levis
通讯作者:
D. Levis
DOI:
--
发表时间:
1967
期刊:
影响因子:
--
作者:
S. Baratz
通讯作者:
S. Baratz
DOI:
--
发表时间:
1962
期刊:
Journal of Abnormal & Social Psychology
影响因子:
--
作者:
I. Katz;M. Cohen
通讯作者:
M. Cohen
影响因子:
5
作者:
LEVINSON, S;LIU, K;BERKSON, D
通讯作者:
BERKSON, D
影响因子:
7.6
作者:
Rodolfo Mendoza;J. Pietrzak;G. Downey
通讯作者:
G. Downey