Froese’s Irruption Theory

Cognitive scientist Tom Froese’s Irruption Theory of consciousness takes phenomenology to be dynamically relevant and thermodynamically efficacious, treating the subjective mind as a causally empowering “black box” that makes a measurable difference in the living body. Subjective states are not an epiphenomenon, he says, but a distinct aspect of reality that interacts with measurable matter through specific entropy exchanges: intentions “irrupt” into bodily dynamics as deviations that initiate action, and lived experience “absorbs” physiological variations into perceptual awareness. By deriving the spontaneous emergence of neural order, such as phase-locked synchrony, from the impossibility of tracing information flow from the organism into consciousness, irruption theory operationalizes the “hard problem” as an indirectly measurable transaction between subject and world.

In arguing for a robustly scientific naturalism, Froese says that a key principle of Irruption Theory is to adopt a “Participation Criterion” (Froese et al., in press) with respect to its explanatory targets. In the current context, this amounts to a commitment to the following proposition:

A scientific theory of the subjective mind must be able to explain how the presence of consciousness makes a measurable difference to the world compared to its absence.

While embodied and enactive approaches have long identified large-scale neural synchrony, such as phase-locking across distributed brain regions, as the correlate of meaningful perceptual experience, they have struggled to explain how such lived experience can be dynamically relevant for neural dynamics (Froese & Sykes, 2023).

Irruption Theory advances this by explaining why such order emerges from first principles. Froese posits that phenomenal consciousness functions as an “absorption operator” on physiological dynamics: when the subjective mind “picks up” information and brings it into awareness, it effectively withdraws variability from the measurable system (Froese, 2024). This informational transaction leaves a trace; the absorption of variability into conscious awareness results in a decrease of physiological state diversity, which can be quantified as a reduction in local entropy. Consequently, the spontaneous suppression of neural disorder (and the resulting emergence of synchronized states) is not merely a neural correlate of consciousness, but the footprint left behind as information “disappears” into the mind, forming lived experience.

Froese argues that this framework reorients the scientific study of consciousness by taking the classic mind-body problem at face value; it treats the mind as a “black box” that is empirically visible only indirectly through its interactions with observable matter. Rather than searching for consciousness in the set of brain observables, Irruption Theory predicts that intentional agency and lived experience will appear as statistical anomalies in the empirical record, specifically as deviations from the statistically expected physiological path. In this view, the “Hard Problem” is not so much an impasse but a feature of reality: the conscious subject is the “hidden variable” that participates in the physiological causal chain. By measuring these deviations, detecting where variance disappears into perception (Absorption) or appears from intention (Irruption), cognitive neuroscience can quantify the causal efficacy of the subjective standpoint without reducing it to mere physiological mechanisms (Froese, 2026). The spatial reach of this efficacy serves as a refined operationalization of the embodied mind, as illustrated in Figure 1.

Fig. 1. The “black box” mind-body architecture of Irruption Theory. Inside the living body, the irreducible properties of the conscious mind appear as an internal “black box”. This boundary is equivalent to the embodied mind and is defined by two informational operators that facilitate embodied intelligence: Irruption (acting), which injects entropy and provides the spontaneous variability necessary for flexible control; and Absorption (perceiving), which reduces variability and generates the redundancy required for efficient compression.. Figure 1 reprinted from Physics of Life Reviews, Vol 56, Tom Froese and Moritz Kriegleder, “Mind-body transactions as informational operators: Comment on ‘Informational embodiment: Computational role of information structure in codes and robots’ by A. Pitti, M. Austin, K. Nakajima, and Y. Kuniyoshi,” Pages 64-66, Copyright (2026), with permission from Elsevier.

Consciousness is dynamically relevant: The Absorption Operator

To operationalize the interaction between a measurable physiological system and an unobservable subjective standpoint, Froese first addresses the “dimensionality mismatch.” Subjective states (intentions, qualia) lack standard physical dimensions (mass, length, charge), which entails that they cannot act as additive forces in the way a neuron kicks another neuron. Instead, Froese’s Irruption Theory posits that the conscious mind participates in bodily dynamics through multiplicative regulation: the hidden subjective standpoint acts as a dimensionless scaling factor on stochastic fluctuations.

In this framework, Froese states, the act of perception is not a passive reception of stimuli but an active process of Absorption. For the subject to “pick up” or be meaningfully informed by a pattern in the environment, it must “absorb” the informational uncertainty associated with that pattern. This withdrawal of information from the measurable system manifests as multiplicative dampening of the system’s intrinsic noise, akin to a “cooling” of the neural state space, where physiological variance is traded for subjectively meaningful content.

This derivation identifies the ideal physical signature of consciousness in the dynamics of coupled oscillators, the fundamental regime of neural activity. In a complex system like the brain, the primary manifestation of entropy (noise) is phase scattering, the tendency of oscillating signals to drift apart and lose coherence over time. If the Absorption operator functions by withdrawing disorder from the system, its most direct observable effect must be the suppression of this diffusion. When the mind absorbs the noise that would otherwise drive phase drift, the system spontaneously settles into a state of relative phase constancy. Therefore, the large-scale neural synchrony (phase locking) observed by neurophenomenology is not merely a correlate of consciousness; it is the necessary indirect trace of the mind “holding” the world in view. The subjective mind “locks onto” the embodied mind, which is situated in the world, leaving behind a footprint of anomalous order in the brain’s activity.

Implications: Agency as Thermodynamic Irruption

According to Froese, the “black box” framework leads to a naturalized model of agency that is the necessary inverse of perception. If the subjective standpoint were only to “absorb” physiological variation, the mind would function as an entropy sink, potentially violating conservation principles. Irruption Theory resolves this by positing that the information absorbed into the subjective standpoint is eventually radiated back into the world via spontaneous action. This is the function of the Irruption operator (Froese, 2023): intentional states are not directly observable via brain imaging, yet efficacious for the basis of behavior; hence, their efficacy manifests as the spontaneous injection of unconstrained degrees of freedom into bodily dynamics, thereby re-establishing thermodynamic balance.

In this minimal model, the willed exercise of agency is a mind-dependent release from physiological constraints: when enacting an intention, the subjective standpoint releases a burst of spontaneous degrees of freedom into the bodily system, which increases the likelihood of a transition from a metastable state to a lower energy state, performing action-related work along the way. In this view, free will is not a suspension of physics, but part of the system’s requisite dissipation. Just as the mind stabilizes neural dynamics when perceiving (Absorption), it destabilizes them when acting (Irruption), which is measurable as a localized increase in entropy. Importantly, this destabilization is not mere noise; it is the causal footprint of the agent’s unobservable intention re-entering the physiological chain. By cycling variance through the subjective “black box,” converting absorbed sensory information into the irruption of motor variability, consciousness functions as a dissipative structure; it transforms the living body into a thermodynamic engine for realizing the statistically unlikely.

Right now, Froese reflects, “Irruption theory is silent about why there is consciousness in the first place. It simply assumes that it is already present and an irreducible part of reality and then works out the consequences” (Froese, personal communication).

References

Froese, T. (2023). Irruption Theory: A novel conceptualization of the enactive account of motivated activity. Entropy, 25(5), 748. https://doi.org/10.3390/e25050748

Froese, T. (2024). Irruption and absorption: A ‘black-box’ framework for how mind and matter make a difference to each other. Entropy, 26(4), 288. https://doi.org/10.3390/e26040288

Froese, T. (2026). Quantifying what is efficacious yet not observable: Cognitive neuroscience’s measurement problem has a solution. Cognitive Science, 50, e70170. https://doi.org/10.1111/cogs.70170

Froese, T., Karelin, G., & Ikegami, T. (in press). Making meaning matter with irruption theory: Bridging efficacy and uncertainty by satisfying the participation criterion. In K. Kull & D. Favareau (Eds.), Semiotics of Biology: Making Meaning in Living Systems. The MIT Press.

Froese, T., & Kriegleder, M. (2026). Mind-body transactions as informational operators: Comment on “Informational embodiment: Computational role of information structure in codes and robots” by A. Pitti, M. Austin, K. Nakajima, and Y. Kuniyoshi. Physics of Life Reviews, 56, 64-66.

Froese, T., & Sykes, J. J. (2023). The pragmatics, embodiment, and efficacy of lived experience: Assessing the core tenets of Varela’s neurophenomenology. Journal of Consciousness Studies, 30(11-12), 190-213.