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FIG 1. Left hemispheric mean number of activated pixels in specific subregions of auditory and language cortex of 12 normal hearing subjects (6 men and 6 women), to passive text listening at 2 different background acoustic scanner noise conditions; 4 sections/2 seconds TR (2 Hz) and 12 sections/2 seconds TR (6 Hz). Activity is greatest in the STG and MTG/STS region. The STG includes the transverse temporal gyrus, planum polare, and planum temporale. The MTG/STS region includes primarily the posterior aspect of the MTG and cortex lining of the posterior aspect of the STS. Activity in the IFG includes primarily Broadman’s areas 44 and posterior 45. Activity in the PFC, AG, and SMG was inconsistent among individuals. Note that there is no significant difference in regional cortical activation of the left hemisphere in the presence of changing scanner noise rates.
