The Microstructure of Attentional Control in the Dorsal Attention Network

Rajan, Abhijit; Meyyappan, Sreenivasan; Liu, Yuelu; Samuel, Immanuel Babu Henry; Nandi, Bijurika; Mangun, George R.; Ding, Mingzhou

doi:10.1162/jocn_a_01710

Cited by 20 publications

(22 citation statements)

References 100 publications

(167 reference statements)

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“…Individually, the peak activation for each subject was found to be within the IFJ ROI so defined for 19 of 20 subjects; and for the remaining subject, the peak activation was found to be within two voxels of the IFJ ROI. The DAN ROI was defined in a similar fashion (Rajan et al, 2021). The V4 ROI was defined by the overlap between feature cue-evoked activations (p , 0.05 FDR) and the retinotopically defined hv4 in the probabilistic maps of L. Wang et al (2015).…”

Section: Discussionmentioning

confidence: 99%

“…The participants reported no prior history of neuropsychological disorders and provided written informed consent. The data from this experiment have been used to investigate different questions in our previously published work (Rajan et al, 2019(Rajan et al, , 2021. Because the analyses conducted here followed this prior work, and effect sizes were taken to be similar to those significant prior findings, no new power analysis was performed before the experiment.…”

Section: Overviewmentioning

confidence: 99%

“…Functional imaging studies in humans have shown that in the period following an attention-directing cue but in advance of the target stimulus (cue-to-target interval), the dorsal attention network (DAN), principally comprising the intraparietal sulcus (IPS) and frontal eye fields (FEFs), is activated irrespective of whether attention is directed to a spatial location or a nonspatial feature (Giesbrecht et al, 2003;Slagter et al, 2007;Egner et al, 2008;Rajan et al, 2021). This has led to the notion that the DAN is an important network supporting the top-down control of attention regardless of the to-be-attended stimulus attribute.…”

Section: Introductionmentioning

confidence: 99%

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Role of Inferior Frontal Junction (IFJ) in the Control of Feature versus Spatial Attention

et al. 2021

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Feature-based visual attention refers to preferential selection and processing of visual stimuli based on their nonspatial attributes, such as color or shape. Recent studies have highlighted the inferior frontal junction (IFJ) as a control region for feature but not spatial attention. However, the extent to which IFJ contributes to spatial versus feature attention control remains a topic of debate. We investigated in humans of both sexes the role of IFJ in the control of feature versus spatial attention in a cued visual spatial (attend-left or attend-right) and feature (attend-red or attend-green) attention task using fMRI. Analyzing cue-related fMRI using both univariate activation and multivoxel pattern analysis, we found the following results in IFJ. First, in line with some prior studies, the univariate activations were not different between feature and spatial attentional control. Second, in contrast, the multivoxel pattern analysis decoding accuracy was above chance level for feature attention (attend-red vs attend-green) but not for spatial attention (attend-left vs attend-right). Third, while the decoding accuracy for feature attention was above chance level during attentional control in the cue-to-target interval, it was not during target processing. Fourth, the right IFJ and visual cortex (V4) were observed to be functionally connected during feature but not during spatial attention control, and this functional connectivity was positively associated with subsequent attentional selection of targets in V4, as well as with behavioral performance. These results support a model in which IFJ plays a crucial role in topdown control of visual feature but not visual spatial attention.

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Section: Discussionmentioning

confidence: 99%

Section: Overviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Role of Inferior Frontal Junction (IFJ) in the Control of Feature versus Spatial Attention

et al. 2021

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“…However, given that most tasks require regions that belong to the SAL and DAN networks, it is not clear what would be the performance in a visually oriented task. It is known that the DAN is activated by visual-spatial attention tasks 38 , connected to the ventral attention network 39 and related to visual attention modulated from the ocular dominance 40 . Also, it has been shown that DAN FC changes after acute stress exposure 41 and in sleep problems 42 .…”

Section: Discussionmentioning

confidence: 99%

Functional connectivity of brain networks with three monochromatic wavelengths: a pilot study using resting-state functional magnetic resonance imaging

Argilés

Sunyer-Grau

Arteche-Fernandez

et al. 2022

Sci Rep

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Exposure to certain monochromatic wavelengths can affect non-visual brain regions. Growing research indicates that exposure to light can have a positive impact on health-related problems such as spring asthenia, circadian rhythm disruption, and even bipolar disorders and Alzheimer’s. However, the extent and location of changes in brain areas caused by exposure to monochromatic light remain largely unknown. This pilot study (N = 7) using resting-state functional magnetic resonance shows light-dependent functional connectivity patterns on brain networks. We demonstrated that 1 min of blue, green, or red light exposure modifies the functional connectivity (FC) of a broad range of visual and non-visual brain regions. Largely, we observed: (i) a global decrease in FC in all the networks but the salience network after blue light exposure, (ii) a global increase in FC after green light exposure, particularly noticeable in the left hemisphere, and (iii) a decrease in FC on attentional networks coupled with a FC increase in the default mode network after red light exposure. Each one of the FC patterns appears to be best arranged to perform better on tasks associated with specific cognitive domains. Results can be relevant for future research on the impact of light stimulation on brain function and in a variety of health disciplines.

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“…The participants reported no prior history of mental disorders and had normal or correct-to-normal vision. The data from this experiment has been used in previous publications to investigate different questions (Rajan et al, 2019; Rajan et al, 2021; Meyyappan et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

Top-down control of the left visual field bias in cued visual spatial attention

Meyyappan

Rajan

Mangun

et al. 2022

Preprint

Self Cite

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A left visual field (LVF) bias in perceptual judgements, response speed and discrimination accuracy are well documented in humans. However, LVF bias can be modulated by perceptual and task demands. For example, cuing spatial attention can reduce or eliminate the LVF bias, suggesting that attentional control can compensate for the LVF bias. We investigated this possibility directly by recording pupillometry together with fMRI in a cued visual spatial attention task. Prior to the onset of a task-relevant target stimulus, we observed that the pupil was significantly more dilated following attend-right than attend-left cues even though task performance did not differ. This difference in pupil dilation was inversely related to the corresponding difference in later target-evoked pupil dilation and in the reaction times to those targets, suggesting that an increased attentional effort was triggered by the attend-right cues, and this offset the LVF bias, equating behavioral performance. The differences in pupil dilation to the right versus left hemifield were correlated with corresponding fMRI differences primarily in the right hemisphere, supporting the idea that the increased attentional effort for rightward attention is mediated by activity in right hemisphere networks, which illuminates how attentional control mediates attentional biases in vision.

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The Microstructure of Attentional Control in the Dorsal Attention Network

Cited by 20 publications

References 100 publications

Role of Inferior Frontal Junction (IFJ) in the Control of Feature versus Spatial Attention

Role of Inferior Frontal Junction (IFJ) in the Control of Feature versus Spatial Attention

Functional connectivity of brain networks with three monochromatic wavelengths: a pilot study using resting-state functional magnetic resonance imaging

Top-down control of the left visual field bias in cued visual spatial attention

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