Our collaborators at the University of New South Wales devised a clever method for objectively measuring the visual hallucinations seen in stroboscopic flicker. In particular, they measured the spatial wavelength and speed of illusory blobs that appear to race around a ring-shaped stimulus when it is flickered at 10-20 Hz. As part of this study, we constructed a mathematical model of the visual cortex that reproduces much of the perceptual behaviour of the hallucinations.
Pearson J, Chiou R, Rogers S, Wicken M, Heitmann S, Ermentrout GB (2016) Sensory dynamics of visual hallucinations in the normal population. eLife Vol 5. e17072.
Selected Media reports
- Did you see that? Inducing visual hallucinations in healthy people. Neuroscience News, 12 Oct 2016.
- Measurable hallucinations induced for the first time. IFL Science, 12 Oct 2016.
- Scientists can make people hallucinate using flickering image. Live Science, 15 Oct 2016
- Scientists found a way to induce visual hallucinations in healthy people without the use of drugs. Science World Report, 18 Oct 2016.