[antonvs]

Or as I call it, the Placebo Effect Helmet.

> The foundations of his theory have been criticized in the scientific press.

> One attempt at replication published in the scientific literature reported a failure to reproduce Persinger's effects and the authors proposed that the suggestibility of participants, improper blinding of participants or idiosyncratic methodology could explain Persinger's results.

> Other groups have reported no effects at all or have generated similar experiences by using sham helmets, or helmets that are not turned on, and have concluded that personality differences in the participants explain these unusual experiences.