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Working memory of auditory localization.

To investigate brain mechanisms of sound location memory, the researchers studied the distribution of brain activation with functional magnetic resonance imaging (MRI) in 25-30 yr olds performing an audiospatial n-back task with 3 memory load levels. Working memory processing of audiospatial information activated areas in the superior, middle, and inferior frontal gyri, and in the posterior parietal and middle temporal cortices. In a control experiment, fMRI during audio- and visuospatial 2-back task performances revealed only few differentially activated subregions between the 2 tasks. These results demonstrate that working memory processing of auditory locations involves a distributed network of brain areas and suggest that mnemonic processing of audio- and visuospatial information is directed along a common neural pathway in the posterior parietal and prefrontal cortices. (PsycINFO Database Record (c) 2009 APA, all rights reserved)



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