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The Journal of Neuroscience, January 11, 2006, 26(2):435-439; doi:10.1523/JNEUROSCI.4408-05.2006

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BRIEF COMMUNICATION
Parietal Cortex Mediates Voluntary Control of Spatial and Nonspatial Auditory Attention

Sarah Shomstein and Steven Yantis

Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, Maryland 21218

The human posterior parietal cortex (PPC) is widely believed to subserve visually guided spatial behavior, including the control of visual attention, eye movements, and reaching. To explore the generality of this function, we measured human brain activity using functional magnetic resonance imaging during spatial and nonspatial shifts of auditory attention. Both spatial and nonspatial shifts of auditory attention evoked transient activity in the medial superior parietal cortex. These results reveal that the PPC is not exclusively devoted to visuospatial behavior; similar regions within a dorsomedial subcompartment provide a domain-independent reconfiguration signal for the control of spatial and nonspatial attention in both visual and nonvisual modalities.

Key words: attentional control; auditory attention; posterior parietal cortex (PPC); superior parietal lobule (SPL); functional magnetic resonance imaging (fMRI); auditory

Received Aug 25, 2005; revised November 17, 2005; accepted November 18, 2005.




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