3D model Open Mouth Mask VR / AR / low-poly | CGTrader
Hollow-Face illusion - Wikipedia
Disruptions in neural connectivity associated with reduced susceptibility to a depth inversion illusion in youth at ultra high risk for psychosis - ScienceDirect
The facial mask stimulus. (a) Front view of the painted concave surface... | Download Scientific Diagram
Hollow Mask Test - DX'd - Other - Schizophrenia.com
Schizophrenics see through hollow-mask illusion | New Scientist