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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.
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The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such...
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Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter...
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Neurotransmitters are essential chemical messengers within the nervous system, facilitating the communication between neurons. These chemical messengers, varying in function and effect, are critical for sustaining various aspects of neurological health and emotional well-being.
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Related Experiment Video

Updated: Apr 11, 2026

Optimized Analysis of DNA Methylation and Gene Expression from Small, Anatomically-defined Areas of the Brain
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Can we observe epigenetic effects on human brain function?

Yuliya S Nikolova1, Ahmad R Hariri2

  • 1Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, Canada.

Trends in Cognitive Sciences
|June 9, 2015
PubMed
Summary
This summary is machine-generated.

Genetic and epigenetic variations, specifically in the serotonin transporter, influence brain function and behavior. This research highlights the potential of epigenetics in understanding biological mechanisms of risk for psychopathology.

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Area of Science:

  • Neuroscience
  • Genetics
  • Epigenetics

Background:

  • DNA sequence variations contribute to individual differences in brain function, behavior, and psychopathology risk.
  • Epigenetic differences, such as gene methylation in peripheral DNA, are increasingly mapped to brain function variability.
  • This research area holds promise for illuminating biological mechanisms underlying risk.

Purpose of the Study:

  • To investigate the effects of genetic and epigenetic variation in the human serotonin transporter on brain function.
  • To evaluate the potential of imaging genetics and epigenetics in understanding brain function and risk.
  • To propose strategies for advancing research in this field.

Main Methods:

  • Utilizing imaging genetics approaches to link DNA sequence variation to brain function.
  • Employing epigenetic analysis, specifically DNA methylation, in peripheral samples.
  • Examining the human serotonin transporter gene for genetic and epigenetic influences.

Main Results:

  • Demonstrated contributions of both genetic and epigenetic factors to brain function variability.
  • Identified specific effects of serotonin transporter variation on brain function.
  • Provided evidence supporting the link between peripheral epigenetic markers and brain function.

Conclusions:

  • Continued research in imaging genetics and epigenetics is encouraged.
  • Epigenetic variation, particularly DNA methylation, offers valuable insights into biological mechanisms of risk.
  • Strategic advancements are needed to accelerate progress in understanding the interplay of genes, epigenetics, and brain function.