Tobacco smoke consists of thousands of compounds including nicotine. Many constituents
have known toxicity to the brain, cardiovascular, and pulmonary systems. Nicotine, on the …

Abstract Serotonin [5‐hydroxytryptamine (5‐HT)] and 5‐HT receptors are involved in sleep
and in waking functions such as cognition and mood. Animal and human studies support a …

Identifying the risk factors for individual differences in age-related cognitive ability and
decline is amongst the greatest challenges facing the healthcare of older people. Cognitive …

The first hypothesis free genome wide association study on cognition recently revealed the
thus far unknown association of a single nucleotide polymorphism (SNP) of the KIBRA gene …

Acute tryptophan depletion (ATD) studies have shown that serotonin plays a role in learning
and memory processes. In this study, we performed a pooled analysis of nine ATD studies in …

Since the work of Taubman (1976), twin studies have identified a significant degree of
heritability for income, education, and many other economic phenotypes (eg, Behrman …

Human cognitive functions are highly variable across individuals and are both genetically
and environmentally influenced. Recent behavioral genetics studies have identified several …

With the completion of the Human Genome Project and the advent of more advanced
sequencing platforms capable of high throughput genotyping at reduced cost, research on …

Basic research has shown that serotonin plays an important role in memory formation.
Accordingly, genetic variation of serotonin receptors can be expected to affect memory and …

Serotonin (5-hydroxytryptamine, 5-HT) is an important neuromodulator in learning and
memory processes. A functional genetic polymorphism of the 5-HT 2a receptor (5-HTR2a …