Prefrontal cortex activation in task switching: an event-related fMRI study

Dove, Anja; Pollmann, Stefan; Schubert, Torsten; Wiggins, Christopher J.; Cramon, D. Yves von

doi:10.1016/s0926-6410(99)00029-4

Cited by 640 publications

(518 citation statements)

References 14 publications

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“…Combining these findings with the evidence of lateral prefrontal cortexTs involvement in other cognitive switching tasks (e.g., Dove et al, 2000;Kimberg et al, 2000;Sohn et al, 2000) and in executive control in general (Collette and Linden, 2002;Funahashi, 2001;Osaka et al, 2004;Smith and Jonides, 1999), it seems that language switching involves inhibitory control function located in the lateral prefrontal cortex.…”

Section: Introductionmentioning

confidence: 61%

“…With this design, we could avoid the shortcomings of the block design used in several previous studies of language switching. Block design confounded language switching with working memory load because working memory in language switching blocks is higher than in single-language blocks (Dove et al, 2000;Rogers and Monsell, 1995). Thus, the activated regions in previous studies may have been due to the higher working memory load in the language switching blocks.…”

Section: Discussionmentioning

confidence: 93%

“…In addition to the right middle frontal gyrus, other areas that may participate in the inhibitory control during forward switching included the left superior medial frontal cortex (BA32) and middle orbital frontal region (BA11) as well as the right middle frontal regions (BA10/46). The SMA might be involved in the inhibition of incorrect responses and representation or selection of the less automatic correct responses (Sylvester et al, 2003), and the SMA was also found to be activated in task switching that required keypress responses (Dove et al, 2000). Therefore, activation in the SMA may be related to both inhibition of incorrect responses and selection of the less automatic but correct responses in forward switching.…”

Section: Forward L1-to-l2 Switchingmentioning

confidence: 98%

“…It has been well documented that the bilateral frontal cortex is involved in general executive function D'Esposito et al, 1995;DiGirolamo et al, 2001;Gehring and Knight, 2000;MacDonald et al, 2000) and has been found to be active when switching between different tasks (Dove et al, 2000;Kimberg et al, 2000;Sohn et al, 2000). The ACC is activated by many different cognitive tasks, including the selection of appropriate response in tasks of selective attention as well as in the monitoring of responses for errors (Badgaiyan and Posner, 1998;Botvinick et al, 1999Botvinick et al, , 2001Veen et al, 2001).…”

Section: Switching Vs Non-switchingmentioning

confidence: 99%

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Neural bases of asymmetric language switching in second-language learners: An ER-fMRI study

et al. 2007

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Using the ER-fMRI technique, the present study was designed to investigate the neural substrates of language switching among secondlanguage learners. Twelve Chinese college students who were learning English were scanned when they performed language switching tasks (naming pictures in their first [L1, Chinese] and second [L2, English] languages according to response cues). Compared to non-switching conditions, language switching elicited greater activation in the right superior prefrontal cortex (BA9/10/32), left middle and superior frontal cortex (BA8/9/46), and right middle cingulum and caudate (BA11). When the direction of switching was considered, forward switching (from L1 to L2), but not backward switching (from L2 to L1), activated several brain regions related to executive functions (i.e., bilateral frontal cortices and left ACC) relative to non-switching conditions. These results suggest that neural correlates of language switching differ depending on the direction of the switch and that there does not seem to be a specific brain area acting as a "language switch".

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Section: Introductionmentioning

confidence: 61%

Section: Discussionmentioning

confidence: 93%

Section: Forward L1-to-l2 Switchingmentioning

confidence: 98%

Section: Switching Vs Non-switchingmentioning

confidence: 99%

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Neural bases of asymmetric language switching in second-language learners: An ER-fMRI study

et al. 2007

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“…To date, only a few fMRI studies looked at brain activities during task switching. For instance, Dove et al (2000) used an event-related fMRI technique and found that the prefrontal cortex is recruited for task switching but no specific region is involved in the execution of a task switch. DiGirolamo et al (2000) recently observed greater areas of activation in the lateral and medial frontal cortex during switching than repeating tasks for younger and older adults.…”

Section: Generality or Specifity Of Age Changes In Task Switching?mentioning

confidence: 99%

Age-Related Changes in Task-Switching Components: The Role of Task Uncertainty

Kray

Lindenberger

2002

Brain and Cognition

161

124

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The present study examined age differences in executive functioning, using an externally cued task-switching paradigm. Two components of task switching were assessed: the ability to maintain and select among task sets (general switch costs) and the ability to switch between task sets (specific switch costs). In contrast to previous findings, we found large age-related differences in specific switch costs, especially when the number of potentially relevant task sets is increased from two to four. Age-related differences in general switch costs were absent when external task cues subserved executive processing in task switching. Generally, the findings suggest that age-related impairments in task-switching components vary as a function of task uncertainty, such as the presence of environmental prompts to behavior. © 2002 Elsevier Science (USA)

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