Joe Barnby

@joebarnby.com

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Assoc. Professor & AI+ Senior Fellow @ KCL & UWA | PI @ socrlab.net Computation, representation, and social cognition in biological 🧠 and artificial 🤖 intelligence

Results and group comparison from Experiments 1 and 2

Gemini said
This schematic outlines three experiments (Online, Lab, and VR) comparing individuals with Cerebral Cavernous Malformations (CCD) to Neurotypical (NT) controls using Random Dot Kinematograms (RDK).

Panel A: Study Overview
Experiment 1 (Online): 10 CCD vs. 85 NT participants using a computer mouse.

Experiment 2 (Lab): 11 CCD vs. 7 NT participants using a button box.

Experiment 3 (VR): 10 CCD vs. 13 NT participants using a VR headset.

Brain Icon: A blue line divides the hemispheres with a crossed-out arrow, suggesting a focus on disrupted interhemispheric communication.

Panel B: Classic RDK (Exp 1 & 2)
A trial sequence on a grey background:

Fixation (1600ms): A central cross.

Motion (1500ms): A circular field of moving dots (red, blue, and white).

Decision (Unlimited): Selection of "L" or "R" buttons.

Confidence (Unlimited): A slider ranging from "Decrease" to "Increase" to rate certainty.

Panel C: VR RDK (Exp 3)
A faster trial sequence used in the VR environment:

Fixation: Until central fixation is achieved.

Motion (180ms): Dots appear within a narrow vertical rectangle.

Decision (Unlimited): A prompt shows blue/orange bars for direction selection.

Panel D: Visual Presentation (Exp 3)
Diagrams showing how stimuli are mapped from the eyes to the brain hemispheres (L and R):

Binocular: Stimuli presented to both eyes, traveling to both hemispheres.

Lateralised: A 3° shift from center presented to one eye.

Monocular: Stimuli presented to one eye, directed specifically toward the right or left hemifield to isolate hemispheric processing.

Announcement from Hypatia regarding second-round investment from the Wellcome Trust and 2026 hiring for five roles: Project Coordinator, Backend Engineer, UXUI Engineer, Artist/Designer, and Director of Operations. The graphic showcases Hypatia's international presence in the UK and Australia, featuring team photos and logos of partner institutions including King's College London, UWA, C-FIT, Orygen, and Emyria.

ipomdp firing with random noise

Two side-by-side images depicting the nested hierarchical IPOMDP and the non-hierarchical x-IPOMDP mechanism.

Poster showing the schedule for Theory of Mind in AI workshop at AAAI 2026, featuring 3 keynote speakers, a hackathon, posters, and flash talks. Sponsored by Edith Cowan University and Ketryx

Computational postdoc ad for KCL funded by the Wellcome Trust on the NEPTUNE project

Experimental design

Josh Tenenbaum speaking at Tom4AI

Sheila McIlraith

Herman de Weerd giving a talk at ToM4AI

Rebecca Saxe giving a talk on Theory of Mind

Nora and Joe

Psychometric Correlations with Social Contagion

Model Comparison

Parameter Space

Model Space

Dynamic Sever Paradigm