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The emergent coordination of cognitive function.

Christopher T Kello1, Brandon C Beltz, John G Holden

  • 1Department of Psychology, George Mason University, Fairfax, VA 22030-4444, USA. ckello@gmu.edu

Journal of Experimental Psychology. General
|November 15, 2007
PubMed
Summary
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1/f scaling, a pattern in human physiology and behavior, reflects the brain's coordination of independent and interdependent activities, not just a byproduct. This finding suggests a fundamental basis for cognitive function.

Area of Science:

  • Cognitive Neuroscience
  • Human Physiology
  • Behavioral Science

Background:

  • 1/f scaling is observed across human physiology and behavior, but its origins are debated.
  • One view suggests it's a byproduct of ongoing processes, limiting its psychological relevance.
  • An alternative view posits it reflects a fundamental balance in physiological and cognitive functions.

Purpose of the Study:

  • To investigate the origins and implications of 1/f scaling in human responses.
  • To differentiate between 1/f scaling as a byproduct versus a fundamental property of cognitive function.

Main Methods:

  • Four experiments utilized key-press responses as a model system.
  • Two measures were collected for each response: reaction time and key-contact duration.

Related Experiment Videos

  • Analysis focused on intrinsic fluctuations within these two parallel measures.

    • Main Results:

    • 1/f scaling was present in both reaction times and key-contact durations.
    • These two measures, despite exhibiting 1/f scaling, were uncorrelated and independently perturbable.
    • Findings suggest 1/f scaling is pervasive and not merely idiosyncratic.

    Conclusions:

    • 1/f scaling is too widespread to be a mere byproduct of specific processes.
    • It reflects a fundamental aspect of cognitive function related to the balance of component activities.
    • 1/f scaling indicates a coordinative and metastable basis for cognitive processes.