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Functional neuroanatomy of executive processes involved in dual-task performance

Summary: Functional neuroanatomy of executive processes
involved in dual-task performance
R. Alison Adcock*, R. Todd Constable
, John C. Gore
, and Patricia S. Goldman-Rakic*
*Section of Neurobiology and Department of NMR Research, Yale University School of Medicine, New Haven, CT 06520
Contributed by Patricia S. Goldman-Rakic, December 31, 1999
The subjective experience of allocating one's attentional resources
among competing tasks is nearly universal, and most current
models of cognition include a mechanism that performs this
allocation; examples include the central executive system and the
supervisory attentional system. Yet, the exact form that an exec-
utive system might take and even its necessity for cognition are
controversial. Dual-task paradigms have commonly been used to
investigate executive function. The few neuroimaging studies of
these paradigms have yielded contradictory findings. Using func-
tional MRI, we imaged brain function during two dual-task para-
digms, each with a common auditory component task (NOUN task)
but varying with respect to a visual component task (SPACE or
FACE tasks). In each of the two dual-task paradigms, the results


Source: Adcock, R. Alison - Center for Cognitive Neuroscience & Department of Psychological and Brain Sciences, Duke University


Collections: Biology and Medicine