How to study subconscious processes ?
It always has been a challenge.
For more than 40 years, Prof. Shevrin has worked at the boundaries between the disciplines of neuroscience and psychoanalysis, looking for evidence that Freudian concepts such as the unconscious and repression could be documented through physical measures of brain activity.
Prof Shevrin has done outstanding work in this area presenting images in very small time windows (1-5 millisec) but tachistoscopes are not cheap and not easy to interface with modern digital technology. Using binocular rivalry and backmasking is not quite a satisfactory solution.
The discovery of the flash effect was a breakthrough however. Now we have
continuous flash suppression that allows us to present images to the brain yet cloaked to consiuous perception. An image is shown continuously yet the person does not "see" it consciously.
read it here (
Wiki)
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