Prism adaptation changes resting-state functional connectivity in the dorsal stream of visual attention networks in healthy adults: A fMRI study

Tsujimoto, Kengo; Mizuno, Katsuhiro; Nishida, Daisuke; Tahara, Masatoshi; Yamada, Eiji; Shindo, Shiori; Kasuga, Shoko; Liu, Meigen

doi:10.1016/j.cortex.2018.10.018

Cited by 26 publications

(27 citation statements)

References 59 publications

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“…According to an influential model Striemer and Danckert, 2010) right PA induces its leftward attentional shift in neglect patients by decreasing activity in the intact left hemisphere and increasing it in the right, whereas left PA causes rightward bias in healthy individuals by doing the opposite. A few studies (Luaute et al, 2006;Crottaz-Herbette et al, 2014, 2017) support this model, but others favor a unilateral (Tsujimoto et al, 2018) or a bilateral and unidirectional (Saj et al, 2013) effect.…”

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confidence: 99%

“…The task itself may also alter the state of the visual attention system in ways which obscure the effects of PA. Resting-state functional connectivity (RSFC) measures dynamic changes in connectivity within networks, without depending on task-related activation. In the one existing study of RSFC changes following PA (Tsujimoto et al, 2018), right PA modulated RSFC in the right dorsal network. However, the analysis was limited to regions of interest in the dorsal and ventral networks and may have failed to reveal changes in other areas.…”

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confidence: 99%

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Prism adaptation modulates connectivity of the intraparietal sulcus with multiple brain networks

Schintu

Freedberg

Gotts

et al. 2019

Preprint

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ABSTRACTPrism adaptation (PA) alters spatial cognition according to the direction of visual displacement by temporarily modifying sensorimotor mapping. Right-shifting prisms (right PA) improve neglect of left space in patients, possibly by decreasing activity in the left hemisphere and increasing it in the right. Left PA shifts attention to the right in healthy individuals by an opposite mechanism. However, functional imaging studies of PA are inconsistent, perhaps because of differing activation tasks. We measured resting-state functional connectivity (RSFC) in healthy individuals before and after PA. Right, vs. left, PA decreased RSFC in the navigation network defined by the right posterior parietal cortices (PPCs), hippocampus, and cerebellum. Right PA, relative to baseline, increased RSFC between regions within both PPCs and between the PPCs and the right middle frontal gyrus, whereas left PA decreased RSFC between these regions. These results show that right PA modulates connectivity within the right-hemisphere navigation network and shifts attention leftward by increasing connectivity in the right frontoparietal network and left PA produces essentially opposite effects, consistent with the interhemispheric competition model. These finding explain the action of PA on intact cognition and will help optimize interventions in neglect patients.

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confidence: 99%

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confidence: 99%

Prism adaptation modulates connectivity of the intraparietal sulcus with multiple brain networks

Schintu

Freedberg

Gotts

et al. 2019

Preprint

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“…hemisphere [33]. Comparison of global connectivity of individual nodes highlighted a decrease of connectivity of parts of the default mode network [35].…”

Section: Plos Onementioning

confidence: 99%

“…The impact of R-PA on resting state connectivity was investigated in normal subject. Using 1.5T fMRI data, Tsujimoto and colleagues performed a seed-based correlation analysis within the attention network and found a significant decrease of connectivity between the right intraparietal sulcus and the right frontal eye field and a significant increase connectivity between the right frontal eye field as well as the right anterior cingulate cortex; this was interpreted as a modulation of DAN within the right hemisphere [33]. In a parallel study, Tsujimoto and colleagues reported a change in resting-state functional connectivity between the primary motor cortex and the cerebellum, which correlated with the amplitude of R-PA aftereffect [34].…”

Section: Introductionmentioning

confidence: 99%

“…Our working hypothesis was based on the observation that R-PA induces a rapid reorganization of the attentional system, including the emergence of ipsilateral spatial representation within the left VAN [30,49,50] and changes in responsiveness within DAN bilaterally [32]. Both phenomena are likely to rely on changes in functional connectivity, which appears to be modulated within DAN [33] as well as within VAN and DMN [35].…”

Section: Introductionmentioning

confidence: 99%

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A brief exposure to rightward prismatic adaptation changes resting-state network characteristics of the ventral attentional system

et al. 2020

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A brief session of rightward prismatic adaptation (R-PA) has been shown to alleviate neglect symptoms in patients with right hemispheric damage, very likely by switching hemispheric dominance of the ventral attentional network (VAN) from the right to the left and by changing task-related activity within the dorsal attentional network (DAN). We have investigated this very rapid change in functional organisation with a network approach by comparing restingstate connectivity before and after a brief exposure i) to R-PA (14 normal subjects; experimental condition) or ii) to plain glasses (12 normal subjects; control condition). A whole brain analysis (comprising 129 regions of interest) highlighted R-PA-induced changes within a bilateral, fronto-temporal network, which consisted of 13 nodes and 11 edges; all edges involved one of 4 frontal nodes, which were part of VAN. The analysis of network characteristics within VAN and DAN revealed a R-PA-induced decrease in connectivity strength between nodes and a decrease in local efficiency within VAN but not within DAN. These results indicate that the resting-state connectivity configuration of VAN is modulated by R-PA, possibly by decreasing its modularity.

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Retinal Neuromodulation as an Influence on Brain Function by Applying Nanoneuroscience Discoveries

Zelinsky,

DeBuc,

Mohammadzadeh

et al. 2024

The Textbook of Nanoneuroscience and Nanoneurosurgery

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Prism adaptation changes resting-state functional connectivity in the dorsal stream of visual attention networks in healthy adults: A fMRI study

Cited by 26 publications

References 59 publications

Prism adaptation modulates connectivity of the intraparietal sulcus with multiple brain networks

Prism adaptation modulates connectivity of the intraparietal sulcus with multiple brain networks

A brief exposure to rightward prismatic adaptation changes resting-state network characteristics of the ventral attentional system

Retinal Neuromodulation as an Influence on Brain Function by Applying Nanoneuroscience Discoveries

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