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A Hedonism Hub in the Human Brain.

G Zacharopoulos1, T M Lancaster1,2, T Bracht1

  • 1CUBRIC, School of Psychology, Cardiff University, Cardiff, Wales, UK.

Cerebral Cortex (New York, N.Y. : 1991)
|July 31, 2016
PubMed
Summary

This study links the human value of hedonism to brain structure. Greater importance placed on hedonism correlated with increased volume in the left globus pallidus, a key reward processing area.

Keywords:
globus pallidushedonismhuman valuesmedial forebrain bundle

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Area of Science:

  • Neuroscience
  • Psychology
  • Behavioral Economics

Background:

  • Human values are abstract ideals that drive behavior.
  • The brain's reward system is crucial for motivated actions.
  • Individual differences in value orientation may relate to neural structures.

Purpose of the Study:

  • To investigate the association between human values and brain structure.
  • To explore if subcortical reward system hubs and the medial forebrain bundle correlate with value orientation.

Main Methods:

  • Pearson's correlation analysis was used.
  • Examined relationships between 10 human values and subcortical brain volumes (14 structures).
  • Assessed microstructural properties of the superolateral medial forebrain bundle (slMFB) in 87 participants.

Main Results:

  • A significant positive correlation was found between hedonism value and left globus pallidus (GP) volume.
  • An uncorrected positive association was observed between myelin volume fraction in the left slMFB and hedonism scores.

Conclusions:

  • This research provides the first evidence linking the value of hedonism to structural variations in reward-related brain regions.
  • Findings suggest a neurobiological basis for individual differences in valuing hedonism.