Running Head: ATTENTION AND STREAMING
نویسندگان
چکیده
Two pairs of experiments studied the effects of attention and of unilateral neglect on auditory streaming. The first pair showed that the build-up of auditory streaming in normal subjects is greatly reduced or absent when they attend to a competing task in the contralateral ear. It was concluded that the effective build-up of streaming depends on attention. The second pair showed that patients with an attentional deficit towards the left side of space (“unilateral neglect”) show less stream segregation of tone sequences presented to their left than to their right ear. Streaming in their right ears was similar to that for stimuli presented to either ear of healthy and of braindamaged controls, who showed no across-ear asymmetry. This result is consistent with an effect of attention on streaming, constrains the neural sites involved, and reveals a qualitative difference between the perception of leftand rightsided sounds by neglect patients.
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