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Variations in 5-HT2A influence spatial cognitive abilities and working memory.

Pingyuan Gong¹, Jing Li, Jian Wang

¹Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Institute of Population and Health Henan University of Science and Technology, Luoyang, China.

The Canadian Journal of Neurological Sciences. Le Journal Canadien Des Sciences Neurologiques

|February 16, 2011

Summary

Genetic variants in the 5-hydroxytryptamine receptor 2A (5-HT2A) influence spatial cognitive abilities and working memory in healthy individuals. This study explored specific 5-HT2A polymorphisms in a Chinese Han population.

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Area of Science:

Neuroscience
Genetics
Cognitive Psychology

Background:

The 5-hydroxytryptamine receptor 2A (5-HT2A) is implicated in psychiatric disorders and has been linked to cognitive function in patient groups.
Previous research suggests a role for 5-HT2A in cognitive abilities, but its specific influence in healthy populations remains underexplored.

Purpose of the Study:

To investigate the association between functional genetic variants in the 5-HT2A gene and cognitive abilities in a healthy Chinese Han population.
To identify specific 5-HT2A polymorphisms that may influence spatial cognition and working memory.

Main Methods:

A population-based study was conducted on a young, healthy Chinese Han cohort.
Two specific polymorphisms in the 5-HT2A gene, rs6313 and rs4941573, were selected for analysis.

Main Results:

The rs6313 and rs4941573 polymorphisms were found to be associated with performance in tasks measuring touching blocks and mental rotation-3D error ratio in males.
The rs4941573 polymorphism showed a significant association with visuo-spatial working memory performance in the entire cohort.

Conclusions:

The findings indicate that 5-HT2A plays a role in human spatial cognitive abilities.
Specific genetic variants of 5-HT2A are linked to spatial working memory in healthy individuals.