An icebreaker
A Virginia research center built by a broadcasting executive has spent decades studying sound patterns meant to shift brain states, drawing an Army researcher's report later declassified by the CIA. Hearing researchers say the core mechanism it claims has no solid experimental support.
After reporting his own spontaneous out-of-body experiences starting in the 1950s, he built a research lab to study altered states through sound, publishing his account in a 1971 book and founding the institute that continues the work today.
In 1960s lab sessions he asked Monroe to read a hidden number while reportedly out of his body; Monroe did not succeed, and Tart treated the results as inconclusive rather than as evidence either way.
In a 1983 internal report, later declassified, he analyzed the institute's training program using a mix of physics, neuroscience, and speculative theory, without presenting it as a validated scientific finding.
An auditory neuroscientist at University College London, she has said there is no link between binaural beats and hemispheric synchronization and no solid experimental support that they improve perception, calling the institute's claims misleading.