thx for the tips whenwillitend . I must agree with you that these are definitely not perceptive illusions, at least not in the sense that oja666 has in mind. Perceptive illusions assume that some kind of an input through senses causes the brain to interpret data in a "wrong" way while this...

Ok, here goes. I tried a couple of doses, followed all instructions for the environment, had my eyes closed the entire time, was in a comfortable position, had no interruption, was relaxed, focused only on the beat. Also, I used headphones of fair quality (sennheiser, except it s not the 140 but the...