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A Sensorimotor Numerosity System.

Giovanni Anobile1, Roberto Arrighi1, Elisa Castaldi2

  • 1Department of Neuroscience, Psychology, Pharmacology and Child Health, University of Florence, Florence, Italy.

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|November 22, 2020
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Summary
This summary is machine-generated.

Action and perception are linked through sensorimotor systems that process numerical information. This suggests a generalized brain system for quantifying actions, space, and time.

Keywords:
approximate number systemnumber sensenumerosity perceptionperceptual adaptationspace perceptiontime perception

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Sensory Perception

Background:

  • Action and perception are intrinsically linked, with motor outcomes generating sensory input.
  • Numerosity perception, the ability to estimate quantity, highlights this interaction.
  • Neural mechanisms responding to both external events and self-produced actions have been identified.

Purpose of the Study:

  • To explore the hypothesis that dedicated sensorimotor mechanisms underlie the interaction between action and numerosity perception.
  • To propose that these mechanisms are part of a broader system for processing quantitative magnitudes.

Main Methods:

  • Review of existing psychophysical adaptation studies in humans.
  • Analysis of neural evidence linking action and perception.

Main Results:

  • Evidence suggests shared neural processing for external and self-generated numerosities.
  • Sensorimotor systems appear crucial for integrating action and numerical information.

Conclusions:

  • The strong connection between action and numerosity perception likely stems from dedicated sensorimotor brain mechanisms.
  • These mechanisms may form part of a generalized system for quantifying space, time, and number, integrating action with perception.