Conscious perception as integrated information patterns in human electrocorticography: Integrated information patterns in human cortex

Andrew M. Haun, Masafumi Oizumi, Christopher K. Kovach, Hiroto Kawasaki, Hiroyuki Oya, Matthew A Howard, Ralph Adolphs, Naotsugu Tsuchiya

Research output: Contribution to journalArticleResearchpeer-review

26 Citations (Scopus)

Abstract

A significant problem in neuroscience concerns the distinction between neural processing that is correlated with conscious percepts from processing that is not. Here, we tested if a hierarchical structure of causal interactions between neuronal populations correlates with conscious perception. We derived the hierarchical causal structure as a pattern of integrated information, inspired by the integrated information theory of consciousness. We computed integrated information patterns from intracranial electrocorticography from 6 human neurosurgical patients with electrodes implanted over lateral and ventral cortices. During recording, subjects viewed continuous flash suppression and backward masking stimuli intended to dissociate conscious percept from stimulus, and unmasked suprathreshold stimuli. Object-sensitive areas revealed correspondence between conscious percepts and integrated information patterns. We quantified this correspondence using unsupervised classification methods that revealed clustering of visual experiences with integrated information, but not with broader information measures including mutual information and entropy. Our findings point to a significant role of locally integrated information for understanding the neural substrate of conscious object perception.
Original languageEnglish
Article numbere0085
Number of pages18
JournaleNeuro
Volume4
Issue number5
DOIs
Publication statusPublished - Sept 2017

Keywords

  • consciousness
  • electrocorticography
  • face perception
  • integrated information theory

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