Not exactly... it does heighten senses... especially vision, I once read about how some Moroccan fisherman would smoke up for an hour straight before going fishing at night. This gave them a greater ability to see in the dark. hell yeah, +one for cannabis. oh and from my own account I can definitely hear a lot better after smoking. years of playing guitar and drums has made it a lil hard to hear at times.... but not when I'm smoked up