Fred Keijzer
University of Groningen
Biological naturalist Consciousness requires living metabolic hardware
Fred Keijzer is a philosopher of cognitive science at the Department of Theoretical Philosophy, University of Groningen, and one of the architects of the basal cognition program. His core argument, developed across two decades, targets the assumption that cognition is essentially input-output computation over representations. Organisms without neurons, and the earliest nervous systems, behave adaptively without anything like central processing, so cognition in its biological roots is organized behavior, not computation over internal models. His 2015 Philosophical Transactions paper with Gáspár Jékely and Peter Godfrey-Smith made the case for early nervous systems, arguing they evolved as action systems for moving animals rather than as sense-making devices (DOI 10.1098/rstb.2015.0181, PMID 26554049).
His 2021 work with Pamela Lyon, Detlev Arendt, and Michael Levin frames the basal cognition research program for the field, examined on this site in the Levin bioelectric cognition analysis, and his Interface Focus paper on biologically embodied cognition states the anti-decomposition position most directly (DOI 10.1098/rsfs.2016.0123).
For the AI consciousness debate, Keijzer supplies a caution and a direction. The caution is that computational framing may be a parochial habit of one evolutionary branch. The direction is that agency-first architectures, not representation-first ones, are where the basal roots of mind live.
Known for. Basal cognition in bacteria, early nervous systems as action systems, moving and sensing without input-output decomposition
Coverage on this site
- Michael Levin Bioelectric Cognition and the Cognitive Light Cone as an AI Consciousness Criterion August 2026
Related researchers
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Michael LevinAllen Discovery Center, Tufts UniversityBioelectric signalling, the cognitive light cone, and diverse intelligence
- Pamela LyonFlinders UniversityBasal cognition, the biogenic approach to mind, valence and affect in organisms without brains, Stress-Induced Senescence theory
- František BaluškaUniversity of BonnCellular consciousness, subcellular nanobrains, plant neurobiology, sentient cells as units of physiology
- Tristan A. BekinschteinDepartment of Psychology / Consciousness and Cognition Lab, University of CambridgeClinical biomarkers of consciousness, local-global auditory paradigm, transitions from wakefulness to sedation, neural dynamics of awareness
- Douglas BlackistonAllen Discovery Center at Tufts UniversityMemory stability during brain remodeling, xenobot platform design, amphibian memory transplantation work
- Scott L. BrincatPicower Institute for Learning and Memory, MITElectrophysiology of primate prefrontal cortex, traveling oscillatory waves, and Analog Cognition and Consciousness (2026)
Fred Keijzer is listed with the other biological naturalists, who hold that consciousness requires living metabolic hardware. The theory family behind that position is set out in the index of consciousness theories. Every researcher covered on this site is indexed in the directory of consciousness researchers.