Mike’s Attentional Network
Mike’s Attentional Network
This chapter focuses on the attentional mechanism of the disconnected hemispheres. Jeffrey D. Holtzman, who conducted numerous attention studies on split-brain patients, found that a common attentional system was shared by two disconnected hemispheres. Sectioning the corpus callosum would hardly bring any change to the attentional capacity, but it is possible that each of the hemispheres may control its own attentional network if they are disconnected. A spatial cuing experiment revealed that the time to respond to a visual target was delayed when each of the hemispheres received two distinct attentional instructions compared with when both received the same cues. This experiment finally concluded that two disconnected hemispheres share a common attentional system.
Keywords: attentional system, disconnected hemispheres, split-brain patients, corpus callosum, hemispheres, spatial cuing experiment
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