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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Brain Cogn. 2010 Jun 20;73(3):229–235. doi: 10.1016/j.bandc.2010.05.007

Figure 1.

Figure 1

A schematic diagram of the horizontal array of 27 speakers used to deliver the auditory stimuli. At a distance of 110 cm the inter-speaker separation was 1.02° of spatial angle. The spatial interval to be bisected was defined by two speakers with a spatial separation of 26.6°. On a given trial the target tone could appear at one of 13 spatial locations ranging from ±10.2° with respect to veridical interval midpoint.