NOS1 ex1f-VNTR polymorphism influences prefrontal brain oxygenation during a working memory task

► NOS1 ex1f-VNTR has an influence on prefrontal functioning. ► Working memory used to measure prefrontal BOLD response with near-infrared spectroscopy. ► We find differences in the oxygenation level for long vs. short allele carriers. ► Short allele carriers make more omission errors compared to the long allele group.