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Hyperthymic temperament and rapid reaction time in brightness preference.

Kensuke Kodama1, Mayu Harada, Takeshi Terao

  • 1Department of Neuropsychiatry, Oita University Faculty of Medicine, Oita 879-5593, Japan.

Journal of Affective Disorders
|September 12, 2013
PubMed
Summary

Hyperthymic temperament, characterized by high energy, is linked to faster decision-making. This study found a negative association between hyperthymic temperament scores and reaction time for brightness preference.

Keywords:
Bipolar disorderBrightness preferenceHyperthymic temperamentReaction timefMRI

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Area of Science:

  • Cognitive Neuroscience
  • Psychology
  • Neuroimaging

Background:

  • Type A behavior pattern involves competitiveness and time urgency.
  • Hyperthymic temperament is associated with high energy and extensive planning.
  • Hypothesis: Hyperthymic temperament correlates with rapid processing and decision-making reaction times.

Purpose of the Study:

  • Investigate the relationship between hyperthymic temperament and reaction time (RT).
  • Examine the association between RT, hyperthymic temperament, and brain activity.
  • Utilize fMRI to explore neural correlates of decision-making speed.

Main Methods:

  • Utilized data from 58 participants in prior experimental studies.
  • Measured reaction time (RT) for brightness judgment and preference tasks.
  • Correlated RT with hyperthymic temperament scores and left inferior orbitofrontal cortex fMRI signals.

Main Results:

  • RT for brightness judgment was faster than for brightness preference.
  • Significant associations were found between RT for brightness preference, hyperthymic temperament, and left inferior orbitofrontal cortex activity.
  • Multiple regression showed RT for brightness preference was negatively associated with hyperthymic temperament and positively with fMRI signals.

Conclusions:

  • Hyperthymic temperament appears to be associated with faster cognitive processing.
  • Further research is needed to confirm generalizability to real-world activities and longer time scales.