A Causal Role of Area hMST for Self-Motion Perception in Humans

Schmitt, Constanze; Baltaretu, Bianca R.; Crawford, J. Douglas; Bremmer, Frank

doi:10.1093/texcom/tgaa042

Cited by 9 publications

(4 citation statements)

References 64 publications

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“…Based on functional magnetic resonance imaging (fMRI) data, a human homologue 1 of MSTd was proposed (Dukelow et al 2001 ), usually referred to as hMST, and selectivity for different optic flow components was demonstrated in hMST by adaptation (Wall et al 2008 ). Transcranial magnetic stimulation (TMS) over hMST increases the variance of heading judgements (Schmitt et al 2020 ) suggesting the involvement of hMST in the perception of self-motion trajectory.…”

Section: Introductionmentioning

confidence: 99%

Cortical visual area CSv as a cingulate motor area: a sensorimotor interface for the control of locomotion

Smith

2021

Brain Struct Funct

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The response properties, connectivity and function of the cingulate sulcus visual area (CSv) are reviewed. Cortical area CSv has been identified in both human and macaque brains. It has similar response properties and connectivity in the two species. It is situated bilaterally in the cingulate sulcus close to an established group of medial motor/premotor areas. It has strong connectivity with these areas, particularly the cingulate motor areas and the supplementary motor area, suggesting that it is involved in motor control. CSv is active during visual stimulation but only if that stimulation is indicative of self-motion. It is also active during vestibular stimulation and connectivity data suggest that it receives proprioceptive input. Connectivity with topographically organized somatosensory and motor regions strongly emphasizes the legs over the arms. Together these properties suggest that CSv provides a key interface between the sensory and motor systems in the control of locomotion. It is likely that its role involves online control and adjustment of ongoing locomotory movements, including obstacle avoidance and maintaining the intended trajectory. It is proposed that CSv is best seen as part of the cingulate motor complex. In the human case, a modification of the influential scheme of Picard and Strick (Picard and Strick, Cereb Cortex 6:342–353, 1996) is proposed to reflect this.

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Section: Introductionmentioning

confidence: 99%

Cortical visual area CSv as a cingulate motor area: a sensorimotor interface for the control of locomotion

Smith

2021

Brain Struct Funct

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“…During saccades (Fig 4b), only bilateral intraparietal sulcus (IPS4) and right dorsomedial occipital cortex (V3B) were preserved as important hubs for communication between the two remaining dorsal and ventral modules. Both posterior parietal and dorsomedial occipital cortex have been implicated in transsaccadic feature integration (Baltaretu et al, 2021, 2023; Dunkley et al, 2016; Prime et al, 2008; Schmitt et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…Betweenness Centrality is a measure that determines which nodes facilitate functional integration between modules (Avena-Koenigsberger et al, 2017;Bullmore & Sporns, 2009). Figure 4 denotes the nodes with greatest Betweenness Centrality of each module in the (Baltaretu et al, 2021(Baltaretu et al, , 2023Dunkley et al, 2016;Prime et al, 2008;Schmitt et al, 2020).…”

Section: Communication Between Modules: Betweenness Centralitymentioning

confidence: 99%

Saccades Influence Functional Modularity in the Human Cortical Vision Network

Tomou,

Baltaretu,

Ghaderi

et al. 2024

Preprint

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Visual cortex is thought to show both dorsoventral and hemispheric modularity, but it is not known if the same functional modules emerge spontaneously from an unsupervised network analysis, or how they interact when saccades necessitate increased sharing of spatial information. Here, we address these issues by applying graph theory analysis to fMRI data obtained while human participants decided whether an object's shape or orientation changed, with or without an intervening saccade across the object. BOLD activation from 50 vision-related cortical nodes was used to identify local and global network properties. Modularity analysis revealed three sub-networks during fixation: a bilateral parietofrontal network linking areas implicated in visuospatial processing and two lateralized occipitotemporal networks linking areas implicated in object feature processing. When horizontal saccades required visual comparisons between visual hemifields, functional interconnectivity and information transfer increased, and the two lateralized ventral modules became functionally integrated into a single bilateral sub-network. This network included between-module connectivity hubs in lateral intraparietal cortex and dorsomedial occipital areas previously implicated in transsaccadic integration. These results provide support for functional modularity in the visual system and show that the hemispheric sub-networks are modified and functionally integrated during saccades.

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“…Neural correlates of path-integration have been mainly studied in the visual modality. Key cortical regions for visual self-motion processing are areas hMST 6 , 7 , hVIP 8 , 9 , hCSv 10 and hV6 11 . But also auditory self-motion cues (pitch scaling with speed) can be used to reproduce traveled distance 12 .…”

Section: Introductionmentioning

confidence: 99%

Neural correlates of visual and tactile path integration and their task related modulation

Rosenblum

Kreß

Arikan

et al. 2023

Sci Rep

Self Cite

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Self-motion induces sensory signals that allow to determine travel distance (path integration). For veridical path integration, one must distinguish self-generated from externally induced sensory signals. Predictive coding has been suggested to attenuate self-induced sensory responses, while task relevance can reverse the attenuating effect of prediction. But how is self-motion processing affected by prediction and task demands, and do effects generalize across senses? In this fMRI study, we investigated visual and tactile self-motion processing and its modulation by task demands. Visual stimuli simulated forward self-motion across a ground plane. Tactile self-motion stimuli were delivered by airflow across the subjects’ forehead. In one task, subjects replicated a previously observed distance (Reproduction/Active; high behavioral demand) of passive self-displacement (Reproduction/Passive). In a second task, subjects travelled a self-chosen distance (Self/Active; low behavioral demand) which was recorded and played back to them (Self/Passive). For both tasks and sensory modalities, Active as compared to Passive trials showed enhancement in early visual areas and suppression in higher order areas of the inferior parietal lobule (IPL). Contrasting high and low demanding active trials yielded supramodal enhancement in the anterior insula. Suppression in the IPL suggests this area to be a comparator of sensory self-motion signals and predictions thereof.

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A Causal Role of Area hMST for Self-Motion Perception in Humans

Cited by 9 publications

References 64 publications

Cortical visual area CSv as a cingulate motor area: a sensorimotor interface for the control of locomotion

Cortical visual area CSv as a cingulate motor area: a sensorimotor interface for the control of locomotion

Saccades Influence Functional Modularity in the Human Cortical Vision Network

Neural correlates of visual and tactile path integration and their task related modulation

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