Abstract
The present study used functional magnetic resonance imaging (fMRI) and a cued version of a flanker paradigm to elucidate the effects of task preparation on subsequent brain activation patterns. A mixed block and event-related design was employed to examine activations associated with the cue periods themselves and the cued and un-cued correct responses to incongruent flankers. A number of areas were active during the cues, most notably left dorsolateral prefrontal cortex (DLPFC), which was interpreted as subserving a role in task-set maintenance. Widespread activity was noted for correct responses to incongruent flankers, including bilateral parietal and frontal regions, consistent with previous studies. Activation was increased in these regions for correct responses after cue periods. An overlapping network of regions was also noted for cues and correct responses, suggesting preparation of task-appropriate anatomical regions during the cue period. These results suggest that cue periods allow participants to prime task-relevant areas within the brain and highlight the importance of left DLPFC in top-down control.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 819-827 |
| Number of pages | 9 |
| Journal | Human Brain Mapping |
| Volume | 27 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2006 |
| Externally published | Yes |
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Keywords
- Behavior
- Cognition
- Flanker
- fMRI
- Top-down control
ASJC Scopus subject areas
- Clinical Neurology
- Neuroscience(all)
- Radiological and Ultrasound Technology
Cite this
Mapping the functional anatomy of task preparation : Priming task-appropriate brain networks. / Fassbender, Catherine; Foxe, John J.; Garavan, Hugh.
In: Human Brain Mapping, Vol. 27, No. 10, 10.2006, p. 819-827.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mapping the functional anatomy of task preparation
T2 - Priming task-appropriate brain networks
AU - Fassbender, Catherine
AU - Foxe, John J.
AU - Garavan, Hugh
PY - 2006/10
Y1 - 2006/10
N2 - The present study used functional magnetic resonance imaging (fMRI) and a cued version of a flanker paradigm to elucidate the effects of task preparation on subsequent brain activation patterns. A mixed block and event-related design was employed to examine activations associated with the cue periods themselves and the cued and un-cued correct responses to incongruent flankers. A number of areas were active during the cues, most notably left dorsolateral prefrontal cortex (DLPFC), which was interpreted as subserving a role in task-set maintenance. Widespread activity was noted for correct responses to incongruent flankers, including bilateral parietal and frontal regions, consistent with previous studies. Activation was increased in these regions for correct responses after cue periods. An overlapping network of regions was also noted for cues and correct responses, suggesting preparation of task-appropriate anatomical regions during the cue period. These results suggest that cue periods allow participants to prime task-relevant areas within the brain and highlight the importance of left DLPFC in top-down control.
AB - The present study used functional magnetic resonance imaging (fMRI) and a cued version of a flanker paradigm to elucidate the effects of task preparation on subsequent brain activation patterns. A mixed block and event-related design was employed to examine activations associated with the cue periods themselves and the cued and un-cued correct responses to incongruent flankers. A number of areas were active during the cues, most notably left dorsolateral prefrontal cortex (DLPFC), which was interpreted as subserving a role in task-set maintenance. Widespread activity was noted for correct responses to incongruent flankers, including bilateral parietal and frontal regions, consistent with previous studies. Activation was increased in these regions for correct responses after cue periods. An overlapping network of regions was also noted for cues and correct responses, suggesting preparation of task-appropriate anatomical regions during the cue period. These results suggest that cue periods allow participants to prime task-relevant areas within the brain and highlight the importance of left DLPFC in top-down control.
KW - Behavior
KW - Cognition
KW - Flanker
KW - fMRI
KW - Top-down control
UR - http://www.scopus.com/inward/record.url?scp=33749463781&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33749463781&partnerID=8YFLogxK
U2 - 10.1002/hbm.20223
DO - 10.1002/hbm.20223
M3 - Article
C2 - 16541457
AN - SCOPUS:33749463781
VL - 27
SP - 819
EP - 827
JO - Human Brain Mapping
JF - Human Brain Mapping
SN - 1065-9471
IS - 10
ER -