Siempre he tenido duda de si las pruebas a doble ciego o ABX en su elaboración y por condiciones naturales del cerebro y evolución humana no "mutilaban" el espectro de percepción en general y de tal manera arrojara resultados inexactos, que la prueba por si misma limitara el espectro de percepción y de ahí el no tener diferencias muchas veces.
Bueno, pues recientes investigaciones han dado un fuerte respaldo a la validez y despejado las dudas que tenía, de hecho confirman que aun tras breves periodos de no tener vista la mejora de escucha en harmónicos mejora.
Bueno, pues recientes investigaciones han dado un fuerte respaldo a la validez y despejado las dudas que tenía, de hecho confirman que aun tras breves periodos de no tener vista la mejora de escucha en harmónicos mejora.
François Champoux, director of the University of Montreal's Laboratory of Auditory Neuroscience Research, will present his team's research and findings at the Acoustics 2012 meeting in Hong Kong, May 13-18, a joint meeting of the Acoustical Society of America (ASA), Acoustical Society of China, Western Pacific Acoustics Conference, and the Hong Kong Institute of Acoustics.
Studies have shown, in terms of hearing, that blind people are better at localizing sound. One study even suggested that blindness might improve the ability to differentiate between sound frequencies. "The supposed enhanced tactile abilities have been studied at a greater degree and can be seen as early as days or even minutes following blindness," says Champoux. "This rapid change in auditory ability hasn't yet been clearly demonstrated."
They found no significant differences between the two groups in their ability to differentiate harmonicity prior to visual deprivation. However, the results of the testing session following visual deprivation revealed that visually deprived individuals performed significantly better than the group that took their blindfolds off.
"Regardless of the neural basis for such an enhancement, our results suggest that the potential for change in auditory perception is much greater than previously assumed," Champoux notes.
Eso por un lado, pero por otro lean el artículo siguiente, no se necesita ver para modificar la percepción de lo que se ve o se escucha, LA IMAGINACIÓN tiene un peso sustancial así que no se necesita ver o no ver sino no imaginar.
El camino para una prueba 100% confiable basada en humanos parece aún complicado dado los numerosos aspectos en juego del cerebro humano
El camino para una prueba 100% confiable basada en humanos parece aún complicado dado los numerosos aspectos en juego del cerebro humano
A study from Karolinska Institutet in Sweden shows, that our imagination may affect how we experience the world more than we perhaps think. What we imagine hearing or seeing "in our head" can change our actual perception. The study, which is published in the scientific journal Current Biology, sheds new light on a classic question in psychology and neuroscience -- about how our brains combine information from the different senses.
"We often think about the things we imagine and the things we perceive as being clearly dissociable," says Christopher Berger, doctoral student at the Department of Neuroscience and lead author of the study. "However, what this study shows is that our imagination of a sound or a shape changes how we perceive the world around us in the same way actually hearing that sound or seeing that shape does. Specifically, we found that what we imagine hearing can change what we actually see, and what we imagine seeing can change what we actually hear."
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