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Is the brain a quantum computer?

Abninder Litt, Chris Eliasmith, Frederick W Kroon, Steven Weinstein, Paul Thagard

Cognitive Science May 6, 2006 DOI: 10.1207/s15516709cog0000_59 (opens in new tab)

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AI-extracted from the abstract
Characteristics Theoretical or philosophical paper Peer reviewed
Key points Argues that quantum computation is irrelevant to explaining how brains produce thought, because quantum effects lack the temporal properties needed for neural information processing, face substantial physical obstacles to organic instantiation, and are not required by psychological evidence on consciousness or mathematical thinking.

Abstract

We argue that computation via quantum mechanical processes is irrelevant to explaining how brains produce thought, contrary to the ongoing speculations of many theorists. First, quantum effects do not have the temporal properties required for neural information processing. Second, there are substantial physical obstacles to any organic instantiation of quantum computation. Third, there is no psychological evidence that such mental phenomena as consciousness and mathematical thinking require explanation via quantum theory. We conclude that understanding brain function is unlikely to require quantum computation or similar mechanisms.

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