Global emotional moment (Craig’s model of awareness)

The theoretical capstone of Craig (2009): a structural model of how the interoceptive hierarchy could instantiate awareness. See insular-cortex, ad-craig.

The proposal

Salience across all relevant conditions — homeostatic, environmental, hedonic, motivational, social, cognitive — is integrated in the posterior→anterior insular progression, culminating in a unified meta-representation of “the material me” at one moment in time (“now”) near the AIC/frontal-operculum junction. Salience is ultimately grounded in homeostasis (significance for maintaining the body/brain), so the model is built on the interoceptive template: feelings are the “computational common currency of awareness.”

From a moment to a stream

An anatomical repetition of this unit, indexed by an endogenous timebase, yields a sequence of global emotional moments spanning a finite present — a “cinemascopic,” continuous subjective awareness (a “meta-memory”). Storage buffers enable comparison of past/present/future feelings, which instantiates a reflexive “observer” (a comparator that “cannot see itself”). von-economo-neurons are the speculative substrate for engendering and interconnecting these moments across AIC and ACC.

What it explains (and doesn’t)

• Explains: subjective time dilation (during intense emotion, moments “fill up” faster, so the timebase effectively speeds up and time seems to slow); music as an emergent property of awareness (a rhythmic temporal progression of emotional moments); the inclusion of the active agent (ACC) — filling a gap in the somatic-marker-hypothesis and answering the James–Lange criticism about internally generated emotion.
• Doesn’t (Craig’s own admission): how a feeling is constructed, the nature of the timebase, the salience metric, how emotions are differentiated, or how the two hemispheres integrate.

Relation to predictive accounts

The model has a comparator and represents “predictions of future feelings” — so it edges toward the predictive framing of interoceptive-inference — but it remains an ascending integration architecture with the comparator at the apex (AIC), not a descending generative model. This is the nuance at stake in feedforward-vs-predictive-interoception.

What the lesion literature says about it (via Jones et al. 2010)

Craig’s own list of what the model does not explain is above. Jones, Ward & Critchley (2010) add an external verdict, and it is the only one in this wiki from people looking at damaged insulae rather than activated ones.

They present the global emotional moment as the leading attempt at a unitary account of insular function — the alternative being a core visceral function from which specialised functions (taste, disgust, limb awareness, speech articulation) evolved separately — and do not endorse it. Their summary: “models of insula function fall short of adequately explaining in detail the range of neuropsychological effects reviewed above,” and specifically, how interoceptive signals are perceived, how they are “translated into perceptual sensation (‘feeling’),” and how predicted/actual mismatch is detected, “is less obvious in the presence of marked insula damage.”

Three concrete pressures from that review:

• Awareness of one’s own body localizes posteriorly. Anosognosia for hemiplegia and hemianaesthesia, and somatoparaphrenia, track posterior insula damage (Karnath et al. 2005; Cereda et al. 2002) — not the AIC where this model puts the moment of awareness. See anosognosia.
• Awareness of pain does not require the insula at all. Two patients with insula-involving strokes rated noxious stimuli as more intense than controls with no insular activation, leading Starr et al. (2009) to conclude the insula “is not a prerequisite” for subjective awareness of noxious stimuli. A model that makes the AIC the seat of awareness has to absorb that.
• The structure is substantially dispensable. 42 insular glioma resections left no visceral, cardiovascular, sensorimotor, gustatory, auditory-vestibular or language disorders at three months (Duffau et al. 2006).

None of this refutes the model — Craig argues from convergence across many domains and the lesions are large, vascular and unclean (lesion-symptom-mapping). But it is the first evidence in this wiki that bears on the model’s central claim rather than on its ingredients, and it does not go the model’s way.

The near-namesake: LeDoux’s global organismic state

LeDoux (2012), published three years later without citing Craig, proposes a global organismic state: a unified whole-organism state integrating body feedback, context, arousal, and memory when a survival circuit fires. The constructs are structurally parallel — both unified, both momentary, both multi-ingredient, both offered as the substrate from which feeling arises.

They diverge on the two things that matter:

• Where. Craig: anterior insula / frontal operculum. LeDoux: prefrontal/parietal cognitive workspace, with the insula playing no role.
• Whether it is the feeling. For Craig the moment is the awareness. For LeDoux the state is pre-conscious raw material that a separate workspace must represent, appraise, and label before any feeling exists.

Kept as separate pages deliberately; the terminological near-collision is a trap for exactly the kind of consolidation this wiki otherwise favours. See where-are-feelings-constituted.