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The brain and higher mental function.

G C Smith1

  • 1Monash University Department of Psychological Medicine, Monash Medical Centre Prince Henry's Hospital, Melbourne, Victoria.

The Australian and New Zealand Journal of Psychiatry
|June 1, 1991
PubMed
Summary
This summary is machine-generated.

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Biological theories of psychiatric disorders need updated insights into higher mental functions. Research suggests the reticular system, not just the limbic system, is crucial for these functions and broader integration.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Science

Background:

  • Understanding biological underpinnings of psychiatric disorders necessitates current knowledge of higher mental functions.
  • Rapid advancements in neuroscience make synthesizing updated concepts challenging.

Purpose of the Study:

  • To provide an updated synthesis of current concepts regarding the mind/body relationship, emotion, arousal, attention, consciousness, and motivation.
  • To relate these concepts to recent findings on the structure and function of key brain systems.

Main Methods:

  • Review of current concepts related to higher mental functions.
  • Examination of recent research on the reticular, limbic, and anterior cerebral systems.
  • Integration of findings to propose a revised model of neural function.

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Main Results:

  • The traditional model of the limbic system solely subserving emotion may need revision.
  • Chemically identified neurons in the reticular system are proposed as necessary, though not sufficient, for higher mental functions.
  • These reticular system neurons also perform essential integrating functions without requiring mental terminology.

Conclusions:

  • A shift from a limbic-centric model to a reticular system-based model for higher mental functions is suggested.
  • The reticular system plays a critical role in both specialized mental functions and general neural integration.
  • Developing an eclectic theory that incorporates these revised concepts is essential for understanding psychiatric disorders.