Abstract：
:Is there a single executive process or are there multiple executive processes that work together towards the same goal in some task? In these experiments, we use counter switching and response inhibition tasks to examine the neural underpinnings of two cognitive processes that have often been identified as potential executive processes: the switching of attention between tasks, and the resolution of interference between competing task responses. Using functional magnetic resonance imaging (fMRI), for both event-related and blocked design tasks, we find evidence for common neural areas across both tasks in bilateral parietal cortex (BA 40), left dorsolateral prefrontal cortex (DLPFC; BA 9), premotor cortex (BA 6) and medial frontal cortex (BA 6/32). However, we also find areas preferentially involved in the switching of attention between mental counts (BA 7, BA 18) and the inhibition of a prepotent motor response (BA 6, BA 10), respectively. These findings provide evidence for the separability of cognitive processes underlying executive control.
journal_name
Neuropsychologiajournal_title
Neuropsychologiaauthors
Sylvester CY,Wager TD,Lacey SC,Hernandez L,Nichols TE,Smith EE,Jonides Jdoi
10.1016/s0028-3932(02)00167-7subject
Has Abstractpub_date
2003-01-01 00:00:00pages
357-70issue
3eissn
0028-3932issn
1873-3514pii
S0028393202001677journal_volume
41pub_type
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