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Related Concept Videos

Human Genetics01:28

Human Genetics

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Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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Behavioral Genetics and Its Designs01:23

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Behavior genetics explores how genetic inheritance influences human behavior. It focuses on how genes, passed from parents to offspring, contribute to the development of behavioral traits and tendencies. This branch of genetics seeks to understand the complex interplay between inherited genetic factors and environmental influences in shaping our behaviors.
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Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
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Updated: Sep 23, 2025

Generalized Psychophysiological Interaction PPI Analysis of Memory Related Connectivity in Individuals at Genetic Risk for Alzheimer's Disease
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Imaging Genetic Based Mediation Analysis for Human Cognition.

Tingan Chen1, Abhishek Mandal1, Hongtu Zhu2

  • 1Department of Statistics, Florida State University, Tallahassee, FL, United States.

Frontiers in Neuroscience
|May 16, 2022
PubMed
Summary
This summary is machine-generated.

Genetic predisposition influences human cognitive traits through the brain connectome. This study analyzed single nucleotide polymorphisms (SNPs) and their causal pathways to cognitive abilities, revealing significant direct genetic effects on behaviors.

Keywords:
causal inferencehuman brain connectomehuman cognitionimaging geneticmediation analysis

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Area of Science:

  • Neuroscience
  • Genetics
  • Cognitive Science

Background:

  • The brain connectome, mapping neural connectivity, is crucial for understanding human cognitive traits.
  • Genetic predisposition is closely linked to cognitive abilities, but causal pathways remain unclear.

Purpose of the Study:

  • To investigate the causal relationship between genetic architecture, brain connectome, and human cognitive traits.
  • To analyze the mediating role of the brain connectome in the genetic influence on cognition.

Main Methods:

  • Causal pathway analysis was performed using single nucleotide polymorphism (SNP) data.
  • 942 SNPs significantly associated with the brain connectome were selected.
  • Direct and indirect effects of SNPs on four common cognitive traits were estimated.

Main Results:

  • A majority of the analyzed SNPs demonstrated significant direct effects on human cognitive traits.
  • The study identified trait-related brain regions involved in these genetic influences.
  • The findings suggest a direct genetic impact on cognitive abilities, potentially mediated by specific brain connectome features.

Conclusions:

  • Genetic variations directly influence human cognitive traits.
  • The brain connectome plays a role in mediating these genetic effects.
  • Further research into specific brain regions and their implications for cognitive function is warranted.