Luigi Lobaccaro — Face It! (ULiège)

Luigi Lobaccaro — Face It! (ULiège)

by Luigi Lobaccaro · View the channel on PSI

Humanities, Social Sciences & Thought Society & Culture JSociety and Social Sciences
🎙 Luigi Lobaccaro 👥 180 📅 February 27, 2023 ⏱ 31 min 👁 48 📄 expert opinion 🧭 2026-10-16
Available in: English (current) Français

Keywords

Capgrasface recognitioncognitive semioticsenactivismdelusion

Summary

Luigi Lobaccaro’s talk, part of the ‘Face It!’ symposium, examines Capgras delusion from a cognitive semiotics perspective. Capgras syndrome is a psychiatric condition where patients believe loved ones have been replaced by imposters, robots, or aliens. Lobaccaro contrasts this with prosopagnosia, highlighting that in Capgras, recognition at a neural level remains intact but emotional/affective responses are absent. He critiques classical neurocognitive models, particularly Ellis and Young’s theory that a disconnection between face perception and the limbic system causes the delusion. He argues that these models fail to explain why a lack of autonomic response leads to a bizarre narrative of imposture. Drawing on Peircean semiotics and Eco’s theory of cognitive types, he proposes an enactive and ecological approach, inspired by Gallagher’s interaction theory. Faces are seen as social affordances, importing meaning through embodied and affective habits. In schizophrenia, a collapse of these habits disrupts the familiar background, making the face of a loved one feel uncanny. The subject then uses encyclopedic knowledge—e.g., stories of aliens or robots—to re-establish meaning, leading to delusional beliefs. Lobaccaro concludes that perception is imaginative sense-making, and differentiates between alpha and beta modes of perception to explain the shift from estrangement to delusion.

197 words

Critical Evaluation

Value of the Information & Strength of the Argument

The talk provides a valuable contribution by integrating cognitive semiotics with psychopathology, offering a fresh perspective on Capgras delusion. The argumentation is systematic: it first reviews empirical findings, then criticizes their theoretical limitations, and finally proposes an enactive, habit-based approach. Lobaccaro’s use of Peircean and Eco’s concepts adds a semiotic depth often missing in neurocognitive accounts. He effectively uses clinical examples and phenomenological descriptions to support his claims. However, the argumentation is largely speculative, and the proposed enactive framework is not fully formalized. While the talk is thought-provoking, it does not present new empirical evidence, and its conclusions remain tentative.

Scientific Rigor, Source Quality, Title Accuracy

The speaker cites relevant literature, including Eco’s ‘Kant and the Platypus’, Gallagher’s interaction theory, and Ellis and Young’s neurocognitive model, demonstrating a solid scholarly base. However, no direct links to sources are provided in the description, so verification relies on the transcript. The title ‘Face It!’ is rather informal and vague, but it clearly relates to the theme of the symposium; it does not mislead about the content, though it fails to signal the specific focus on Capgras syndrome. The adequacy between title and content is acceptable, but the title could be more informative.

209 words

Title / Content Match

The title 'Face It!' is catchy and hints at the central theme of faces, but its cryptic nature may obscure the specific focus on Capgras delusion.

Quality & Reliability

7/10

Expert talk well-grounded in cognitive semiotics and neuroscience, but purely theoretical without empirical data; relies on cited literature and clinical cases.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

  • Eco, U. (1999). Kant and the Platypus — Referenced for the theory of cognitive types and perception.
  • Ellis, H. D., & Young, A. W. (1990). Accounting for delusional misidentifications — Cited as the main neurocognitive theory of Capgras delusion.
  • Gallagher, S. (2005). How the Body Shapes the Mind — Mentioned for interaction theory and enactive perception.
  • Peirce, C. S. (various works) — Underlying semiotic concepts of iconism and abduction.

Concurring Sources

  • Freud, S. (1919). The Uncanny — Mentioned to explain the feeling of unfamiliarity in Capgras.

Contribution & Novelties

The talk’s original contribution lies in reframing Capgras delusion as a crisis of semiotic habits rather than a mere perceptual deficit. It integrates enactive cognitive science with Peircean semiotics, arguing that face recognition is a social affordance shaped by affective and embodied habits. This perspective explains why the delusion often targets loved ones and why patients resort to narratives of robots or aliens to restore meaning. The proposal that delusional perception involves a shift from alpha to beta modes of perception offers a novel semiotic mechanism for the onset of delusions.

Pour aller plus loin :

  • Capgras delusion — Overview of the syndrome and its neurocognitive explanations.
  • Prosopagnosia — Face blindness, a contrast condition discussed in the talk.
  • Enactivism — Theoretical framework that underpins the speaker’s proposal.
  • Shaun Gallagher — Philosopher whose interaction theory is central to the talk.

139 words

Radar Profile

The profile shows high technical level and good information quantity, but slightly lower quality due to lack of empirical data. The reliability is moderate, consistent with a theoretical opinion.

Reliability 7/10