| Title |
Task- and domain-specific modulation of functional connectivity in the ventral and dorsal object-processing pathways
|
|---|---|
| Published in |
Brain Structure and Function, March 2018
|
| DOI | 10.1007/s00429-018-1641-1 |
| Pubmed ID | |
| Authors |
Frank E. Garcea, Quanjing Chen, Roger Vargas, Darren A. Narayan, Bradford Z. Mahon |
| Abstract |
A whole-brain network of regions collectively supports the ability to recognize and use objects-the Tool Processing Network. Little is known about how functional interactions within the Tool Processing Network are modulated in a task-dependent manner. We designed an fMRI experiment in which participants were required to either generate object pantomimes or to carry out a picture matching task over the same images of tools, while holding all aspects of stimulus presentation constant across the tasks. The Tool Processing Network was defined with an independent functional localizer, and functional connectivity within the network was measured during the pantomime and picture matching tasks. Relative to tool picture matching, tool pantomiming led to an increase in functional connectivity between ventral stream regions and left parietal and frontal-motor areas; in contrast, the matching task was associated with an increase in functional connectivity among regions in ventral temporo-occipital cortex, and between ventral temporal regions and the left inferior parietal lobule. Graph-theory analyses over the functional connectivity data indicated that the left premotor cortex and left lateral occipital complex were hub-like (exhibited high betweenness centrality) during tool pantomiming, while ventral stream regions (left medial fusiform gyrus and left posterior middle temporal gyrus) were hub-like during the picture matching task. These results demonstrate task-specific modulation of functional interactions among a common set of regions, and indicate dynamic coupling of anatomically remote regions in task-dependent manner. |
X Demographics
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 50% |
| Unknown | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 50% |
| Practitioners (doctors, other healthcare professionals) | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 49 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 49 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 12 | 24% |
| Researcher | 9 | 18% |
| Student > Doctoral Student | 4 | 8% |
| Professor > Associate Professor | 4 | 8% |
| Lecturer | 3 | 6% |
| Other | 9 | 18% |
| Unknown | 8 | 16% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 14 | 29% |
| Neuroscience | 9 | 18% |
| Nursing and Health Professions | 4 | 8% |
| Linguistics | 2 | 4% |
| Engineering | 2 | 4% |
| Other | 5 | 10% |
| Unknown | 13 | 27% |
Attention Score in Context
This research output has an Altmetric Attention Score of 2. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 11 May 2018.
All research outputs
#14,427,897
of 24,217,893 outputs
Outputs from Brain Structure and Function
#773
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#177,476
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Outputs of similar age from Brain Structure and Function
#22
of 42 outputs
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