Materialism › Neurobiological
D. Freeman's Primitive Felt Theory
Consciousness as Combinations of Primitive Subcortical Feelings
Daniel Freeman proposes that phenomenal consciousness is built from a finite set of irreducible felt states, from thirst and fear to familiarity, confidence and urgency, generated in conserved subcortical structures near the midline of the diencephalon and upper brainstem. Cortex computes the content of thought without experiencing it; its outputs descend to these structures and are felt as shifting combinations of primitives, so even abstract thinking is a compressed felt readout of cortical computation.
Daniel K. Freeman
What consciousness is
Consciousness is a configuration of phenomenologically irreducible felt states instantiated in midline subcortical circuitry; cortical computation fixes what a state is about but is not itself felt.
Mind and body
Freeman separates computation from instantiation: cortex does representational and inferential work, while a still-unidentified physical process in subcortical structures gives states their phenomenal character.
Mechanism
Cortical outputs converge through Merker's efference cascade onto compact midline subcortical structures, where they are expressed as combinations of a finite set of felt primitives.
Core claims
- The same repertoire that yields thirst and fear also yields the felt character of abstract thought.
- People with aphantasia reason normally, which Freeman takes to show that imagery is auxiliary and evaluative primitives are basic.
- Mapping studies place homeostatic, emotional and cognitive feelings in one continuous space.
- The gap between parallel cortical processing and a roughly 10 bit-per-second stream of thought suggests experience is a compressed summary.
Criticisms
Chudnoff's objection that distinct propositions might evoke the same blend of feelings challenges semantic specificity; Freeman answers that combinatorial capacity can individuate thoughts, but that shows they could be, not that they are. The primitives are not enumerated and their irreducibility rests on introspection.
Implications
- AI consciousness: Unlikely
- Freeman locates experience in a physical, spatially cohesive subcortical process distinct from computation, so computation alone would not suffice; he uses language models only as an analogy.
- Survival beyond death: No
- Since felt states are instantiated in subcortical brain tissue, they cease when it dies.
- Meaning and purpose: Humanistic only
- Felt primitives are an evolved valuation system for guiding action.
- Virtual immortality: Unlikely
- If phenomenal character needs a physically continuous substrate, simulating cortical computation would not reproduce experience.
Related theories
- Merker’s Midbrain-Centered Reality Space (Foundation)
- Panksepp’s Primal Affective Consciousness (Overlap)
- Solms's Affect as the Hidden Spring of Consciousness (Overlap)
- Rosenthal’s Higher-Order Thought (Contrast)
Sources
- Accounting for cognitive phenomenology in subcortical theories of consciousness, Daniel K. Freeman (2026)
- Transcranial focused ultrasound for identifying the neural substrate of conscious perception, D. K. Freeman, B. Odegaard, S.-S. Yoo and M. Michel (2026)
- The efference cascade, consciousness, and its self, B. Merker (2013)
- Maps of subjective feelings, L. Nummenmaa, R. Hari, J. K. Hietanen and E. Glerean (2018)
- The unbearable slowness of being: Why do we live at 10 bits/s?, J. Zheng and M. Meister (2025)
- Cognitive Phenomenology, T. Bayne and M. Montague (eds.) (2011)
- Cognitive Phenomenology, E. Chudnoff (2015)