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An event-related functional magnetic resonance imaging study of voluntary and stimulus-driven orienting of attention.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kincade, J. Michelle Abrams, Richard A. Astafiev, Serguei V. Shulman, Gordon L. Corbetta, Maurizio |
| Copyright Year | 2005 |
| Abstract | Attention can be voluntarily directed to a location or automatically summoned to a location by a salient stimulus. We compared the effects of voluntary and stimulus-driven shifts of spatial attention on the blood oxygenation level-dependent signal in humans, using a method that separated preparatory activity related to the initial shift of attention from the subsequent activity caused by target presentation. Voluntary shifts produced greater preparatory activity than stimulus-driven shifts in the frontal eye field (FEF) and intraparietal sulcus, core regions of the dorsal frontoparietal attention network, demonstrating their special role in the voluntary control of attention. Stimulus-driven attentional shifts to salient color singletons recruited occipitotemporal regions, sensitive to color information and part of the dorsal network, including the FEF, suggesting a partly overlapping circuit for endogenous and exogenous orienting. The right temporoparietal junction (TPJ), a core region of the ventral frontoparietal attention network, was strongly modulated by stimulus-driven attentional shifts to behaviorally relevant stimuli, such as targets at unattended locations. However, the TPJ did not respond to salient, task-irrelevant color singletons, indicating that behavioral relevance is critical for TPJ modulation during stimulus-driven orienting. Finally, both ventral and dorsal regions were modulated during reorienting but significantly only by reorienting after voluntary shifts, suggesting the importance of a mismatch between expectation and sensory input. |
| File Format | PDF HTM / HTML |
| DOI | 10.1523/JNEUROSCI.0236-05.2005 |
| PubMed reference number | 15872107 |
| Journal | Medline |
| Volume Number | 25 |
| Issue Number | 18 |
| Alternate Webpage(s) | http://www.jneurosci.org/content/jneuro/25/18/4593.full.pdf |
| Alternate Webpage(s) | http://braindetective.com/journalclub/2005Kincade.pdf |
| Alternate Webpage(s) | https://doi.org/10.1523/JNEUROSCI.0236-05.2005 |
| Journal | The Journal of neuroscience : the official journal of the Society for Neuroscience |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
