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The Continuum from Temperament to Mental Illness: Dynamical Perspectives.

William Sulis1

  • 1Department of Psychiatry and Behavioural Neuroscience/McMaster University, Hamilton, Ontario, Canada, sulisw@mcmaster.ca.

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Summary

Temperament and mental illness may exist on a neurobehavioral regulation continuum. Dynamical systems theory offers novel markers to analyze this continuum, addressing challenges like transience and contextuality.

Keywords:
ContinuumDynamical phasesDynamicsMental illnessPhase transitionsProcess algebraTemperamentTime series

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Area of Science:

  • Neuroscience
  • Complex Systems Science
  • Psychiatry

Background:

  • Temperament and mental illness are often viewed as poles on a neurobehavioral regulation continuum.
  • This continuum is traditionally analyzed using dimensional descriptors.

Purpose of the Study:

  • To explore the application of dynamical systems theory to understand the temperament-mental illness continuum.
  • To identify challenges and propose a novel dynamical systems model for this continuum.

Main Methods:

  • Review of dynamical systems markers applicable to time series data (e.g., attractors, fluctuation spectroscopy, entropy).
  • Discussion of challenges posed by transience, contextuality, and emergence in temperament and mental illness.
  • Proposal of a dynamical systems model integrating Process Theory and the Functional Ensemble of Temperament.

Main Results:

  • Dynamical systems markers offer a new perspective on neurobehavioral regulation.
  • Transience, contextuality, and emergence are key challenges for current dynamical systems approaches.
  • A multiscale, phase-based dynamical systems model is proposed for the temperament-mental illness continuum.

Conclusions:

  • Dynamical systems theory provides a valuable framework for studying the neurobehavioral continuum.
  • Future research should focus on identifying order and control parameters within this proposed model.