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terça-feira, 7 de setembro de 2010

Meditação com um App Binaural

Aparentemente, este App ajuda na Meditação e em Estados Alterados de Consciência.
Como é de borla, é de experimentar:




A explicação da coisa:
In 1839, German experimenter Heinrich Wilhelm Dove discovered that illusory "beats" are perceived when pure tones of slightly different frequency are separately and simultaneously presented to each ear. Dove's insight was to realize that since there is no acoustic mixing of the tones, the perceived beats must exist solely within the auditory system, specifically that part which processes binaural (e.g., "stereo") sound.

While research in to binaural beats continued after that, the subject was viewed largely as no more than a scientific curiosity. Oster's paper was landmark not so much for its laboratory findings, but in how it tied-together the isolated islands of research since Dove in a way that gave the subject a renewed relevance to modern scientific questions.

Oster viewed binaural beats as a tool with applications for both research and medical applications. In terms of research, he felt they could be used to explore the neural pathways involved in hearing, and also to address higher-level questions such as how we locate sounds spatially in our environment, or selectively pick-out individual sounds from a jumbled noise (see "cocktail party effect"). Medically, Oster saw potential for binaural beats as a diagnostic tool, both for auditory impairments, and for a surprising range of non-auditory subjects. Of the latter, most notable was the startling finding that a diminished ability to perceive binaural beats preceded the onset of symptoms of Parkinson's disease. He also corroborated a study showing that the ability to perceive binaural beats fluctuated over hormonal cycles such as menstruation. Most important for Oster's thesis (that binaural beats involved different neural pathways than conventional hearing) was that binaural beats are perceived even when one or both frequencies are below the human hearing threshold.

Do binaural beats influence brainwave activity?

Many consider the idea of binaural beats influencing brainwave activity "controversial", but it is not, actually; only the claims of what that influence amounts to are controversial. That rhythmic stimuli can induce FFR is long studied across many species, comprising a subject known as "driving", and by no means do binaural beats have a monopoly on even auditory driving; the repetitive beating of a drum can induce FFR. But binaural beats do seem to have some advantages over many direct approaches, being arguably more efficient than most auditory means (perhaps because they use more neural circuits than conventional hearing, and a true low-frequency sinusoidal stimulus), and less invasive than some of the non-auditory approaches (like photic or electromagnetic). For example, while effective, it is well known that photic and electromagnetic stimuli can induce seizures. In my experience, binaural beats have been as harmless as anything else I listen to through headphones.
Podem até experimentar sem fazerem o Download grátis do App, indo aqui:

http://gnaural.sourceforge.net/

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