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Afference copy as a quantitative neurophysiological model for consciousness.

Hugo Cornelis1, Allan D Coop

  • 1Three Way Street, P. O. Box 5160, Braddon, Australian Capital Territory 2612, Australia.

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Summary

Consciousness arises from the vertebrate nervous system, bridging a temporal gap in sensory processing with predictive percepts. This model explains subjective experience through reflexive learning and memory, offering a new framework for understanding consciousness.

Keywords:
Consciousnessafference copyexplanatory gapinhibitionlearningmemorypredictionqualiareflexreview

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Philosophy of Mind

Background:

  • Consciousness is a complex phenomenon with a long history of philosophical debate.
  • Viewing consciousness as a necessary process of the vertebrate nervous system simplifies its understanding.
  • Existing explanations often struggle with the subjective nature of conscious experience.

Purpose of the Study:

  • To propose a physiological model for consciousness.
  • To explain the "explanatory gap" in conscious perception.
  • To elucidate the role of afference copy in generating subjective experience.

Main Methods:

  • Development of a schematic model for consciousness.
  • Utilizing the concept of "afference copy" to bridge the explanatory gap.
  • Reviewing psychological and neurophysiological findings to contextualize the model.

Main Results:

  • A physiological "explanatory gap" is created by neuronal activity's temporal requirements.
  • Consciously experienced percepts are fabricated using "afference copy", memory, and stimuli.
  • Percepts predict subjective conscious experience during the gap period.

Conclusions:

  • Consciousness is supported by neural circuitry derived from reflexive learning and recall.
  • The proposed model offers a framework for understanding the generation of subjective conscious experience.
  • Further implications for neuroscience and philosophy are discussed.