Do discrete emotions map onto distinct brain regions or networks?
The brain-level counterpart to autonomic-specificity-of-emotion (which asks the same question of peripheral physiology). Raised directly by Lindquist, Wager, Kober, Bliss-Moreau & Barrett (2012)‘s meta-analysis of the human emotion-neuroimaging literature.
The core disagreement
Locationism: fear = amygdala, disgust = insula, anger = OFC, sadness = ACC — discrete emotion categories consistently and specifically correspond to distinct brain locales or anatomically inherited networks, following the “basic emotions” behavioral tradition (Ekman, Izard, Panksepp, Tomkins).
Psychological constructionism: emotion categories are not natural kinds respected by the brain. Instances of anger, fear, disgust, etc. emerge from the combination of domain-general operations — core affect, conceptualization, language, executive attention — realized in networks that are consistently active across many emotion categories (and, the authors note, likely non-emotional states too) rather than specifically for any one.
What the meta-analysis actually found
No region showed both consistency and specificity for a single category. Regions did show functional selectivity (relative preference: e.g., amygdala somewhat more responsive to fear perception than to other categories) without functional specificity (exclusivity: the same regions were also active for other categories). The authors argue this pattern — selectivity without specificity, spread across a small set of domain-general networks recurring across all five studied emotion categories — is what constructionism predicts and locationism does not.
Scherer’s methodological objection
Scherer’s commentary is the sharpest counter, and worth recording precisely because it does not defend locationism — it denies the dichotomy is exhaustive. The component process model (CPM) is explicitly non-locationist (appraisal checks — novelty, intrinsic pleasantness, goal-conduciveness — draw on general-purpose brain mechanisms, not emotion-specific centres) yet is not constructionist in Barrett’s sense either. Scherer argues that because the CPM already predicts domain-general substrates for relevance detection, integration, and conceptualization, the meta-analysis’s results are “consistent with many different emotion theories” and do not specifically vindicate psychological construction over componential appraisal. This is a caution about what a meta-analysis of consistency/specificity can adjudicate: it can rule out strict locationism, but ruling out locationism does not, by itself, establish any particular alternative theory.
Bearing on this wiki’s anatomical material
This debate sharpens rather than undermines the wiki’s existing Craig/Seth material: Lindquist et al. explicitly cite Craig (2002) and Craig (2009) approvingly for the insula’s role in interoceptive/affective awareness, rejecting only the (different, and more locationist) claim that the insula is specifically a “disgust” structure. See the anatomy-by-anatomy discussion on insular-cortex, anterior-cingulate-cortex, and the new lindquist-2012-brain-basis-of-emotion study page. One live, unresolved tension is flagged there: Craig’s own forebrain emotional asymmetry hypothesis (right AIC ↔ survival/withdrawal emotions, left AIC ↔ affiliative/approach emotions) is itself a category-cluster-to-hemisphere locationist claim in Lindquist et al.’s sense, and has not been tested against their functional-specificity criteria.
Status: open
Left open by the target article’s own authors’ response (which concedes multivoxel pattern analysis — testing whether categories are represented by unique distributed activation patterns rather than univariate regional consistency — was not attempted) and by the commentary record (Scherer’s dichotomy objection; Smaldino & Schank’s “quasi-natural kinds” middle position).