Electrical Stimulation of Human MT+ Causes Illusory Visual Motion
Author Information
Author(s): Andreas M. Rauschecker, Mohammad Dastjerdi, Kevin S. Weiner, Nathan Witthoft, Janice Chen, Aslihan Selimbeyoglu, Josef Parvizi
Primary Institution: Stanford University
Hypothesis
Does electrical stimulation of the hMT+ area in the human brain elicit conscious visual motion perception?
Conclusion
Electrical stimulation of the hMT+ area in conscious human subjects can produce vivid illusory visual motion experiences.
Supporting Evidence
- Electrical stimulation of hMT+ elicited illusory motion in 92% of trials.
- Illusory motion was only reported when stimulation overlapped with fMRI-defined hMT+.
- Subjects reported vivid and consistent illusory experiences during stimulation.
Takeaway
When doctors stimulated a specific part of the brain called hMT+, the patients saw things moving that weren't really there.
Methodology
The study used fMRI, ECoG, and electrical brain stimulation in three patients with implanted electrodes to investigate the role of hMT+ in visual motion perception.
Potential Biases
Potential bias due to the small sample size and the clinical context of the study.
Limitations
The study was limited to three patients, and the findings may not generalize to the broader population.
Participant Demographics
Three patients (1 male, 2 female) undergoing epilepsy surgery.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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