New Theory of Consciousness in Humans, Animals and Artificial Intelligence

Written by on December 24, 2021 in Sci-Tech, Science with 0 Comments
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Two researchers at Ruhr-Universität Bochum (RUB) have come up with a new theory of consciousness. They have long been exploring the nature of consciousness, the question of how and where the brain generates consciousness, and whether animals also have consciousness. The new concept describes consciousness as a state that is tied to complex cognitive operations—and not as a passive basic state that automatically prevails when we are awake.

Professor Armin Zlomuzica from the Behavioral and Clinical Neuroscience research group at RUB and Professor Ekrem Dere, formerly at Université Paris-Sorbonne, now at RUB, describe their theory in the journal Behavioural Brain Research. The printed version will be published on 15 February 2022, the online article has been available since November 2021.

“The hypotheses underlying our platform theory of consciousness can be tested in experimental studies,” as the authors describe one advantage of their concept over alternative models. “Thus, the process of consciousness can be explored in humans and animals or even in the context of artificial intelligence.”

The platform theory in detail

The complex cognitive operations that, according to platform theory, are associated with consciousness are applied to mental representations that are maintained and processed. They can include perceptions, emotions, sensations, memories, imaginations, and associations. Conscious cognitive operations are necessary, for example, in situations where learned behavior or habits are no longer sufficient for coping. People don't necessarily need consciousness to drive a car or take a shower. But when something unexpected happens, conscious cognitive actions are required to resolve the situation. They are also necessary to predict future events or problems and to develop suitable coping strategies. Most importantly, conscious cognitive operations are at the basis for adaptive and flexible behavior that enables humans and animals to adapt to new environmental conditions.

According to the new theory, conscious cognitive actions take place on the basis of a so-called online platform, a kind of central executive that controls subordinate platforms. The subordinate platforms can act, for example, as storage media for knowledge or activities.

Electrical junctions between nerve cells crucial

Conscious cognitive operations are facilitated by the interaction of different neuronal networks. Armin Zlomuzica and Ekrem Dere consider electrical synapses, also known as gap junctions, to be crucial in this context. These structures enable extremely fast transmission of signals between nerve cells. They work much faster than chemical synapses, where communication between cells takes place through the exchange of neurotransmitters and -modulators.

A possible experiment

The authors suggest for example the following experiment test their platform theory: a human, an experimental animal or artificial intelligence is confronted with a novel problem that can only be solved by combining two or more rules learned in a different context. This creative combination of stored information and application to a new problem can only be accomplished using conscious cognitive operations.

By administering pharmacological substances that block gap junctions, the researchers would be able to test whether gap junctions do indeed play a decisive role in the processes. Gap junction blockers should inhibit performance in the experiment. However, routine execution of the individual rules, in the contexts in which they were learned, should still be possible.

“To what extent an artificial intelligence which is capable of independently solving a new and complex problem for which it has no predefined solution algorithm can likewise be considered conscious has to be tested,” point out the authors. “Several conditions would have to be fulfilled: The first one, for example, would be fulfilled, if it successfully proposes a strategy to combat a pandemic by autonomously screening, evaluating, selecting and creatively combining information from the internet.”

More information: Armin Zlomuzica et al, Towards an animal model of consciousness based on the platform theory, Behavioural Brain Research (2021). DOI: 10.1016/j.bbr.2021.113695

Journal information: Behavioural Brain Research

Provided by Ruhr-Universitaet-Bochum

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