Action at a distance on object-related ventral temporal representations

Lee, Dongha; Mahon, Bradford Z.; Almeida, Jorge

doi:10.1016/j.cortex.2019.02.018

Cited by 30 publications

(50 citation statements)

References 67 publications

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“…grey matter voxel sets that share strong functional connectivity with the wider brain yield consistently better pattern discriminability than lesser-connected sets do, across all tested categories of information). These findings align with previous demonstrations that local OTC responses are shaped by distal connectivity with the wider brain (Amaral et al, under review;Chen et al, 2017;Garcea et al, 2019;Lee et al, 2019;Osher et al, 2016;Saygin et al, 2012;Saygin et al, 2016), and the more general proposal that functional brain responses are strongly determined by the integration of relevant information shared via structural and functional connectivity to the wider brain (Mahon & Caramazza, 2011;Osher et al, 2016;Park & Friston, 2013;Ruttorf et al, 2019;Saygin et al, 2012;Saygin et al, 2016;Sporns, 2004;Sporns & Zwi, 2004;Varela et al, 2001). Ultimately, local computations and the organization of representational content in OTC are dependent on interactions between connectivityconstrained neural assemblies that are likely dedicated to achieving particular computational goals (e.g.…”

Section: Discussionsupporting

confidence: 92%

“…More specifically, category-preferring OTC responses are functionally coupled with, and modulated by, distal regions that share the same category-preference (e.g. tool responses in medial fusiform gyrus are shaped by inferior parietal cortex; Amaral et al, under review; Chen et al, 2017; Garcea et al, 2019; Lee et al, 2019); similarly, OTC responses for multiple visual categories (e.g. faces, objects, bodies, & places) can be reliably predicted from patterns of white matter connectivity to the wider brain (Osher et al, 2016; Saygin et al, 2012; Saygin et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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High-level representations in human occipito-temporal cortex are indexed by distal connectivity

Walbrin

2021

Preprint

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Human object recognition is dependent on occipito-temporal cortex, but a complete understanding of the complex functional architecture of this area must account for how it is connected to the wider brain. Converging functional magnetic resonance imaging evidence shows that univariate responses to different categories of information (e.g. faces, bodies, & non-human objects) are strongly related to, and potentially shaped by, functional and structural connectivity to the wider brain. However, to date, there have been no systematic attempts to determine how distal connectivity and complex local high-level responses in occipito-temporal cortex (i.e. multivoxel response patterns) are related. Here, we show that distal functional connectivity is related to, and can reliably index, high-level representations for several visual categories (i.e. tools, faces, & places) within occipito-temporal cortex; that is, voxel sets that are strongly connected to distal brain areas show higher pattern discriminability than less well-connected sets do. We further show that, in several cases, pattern discriminability is higher in sets of well-connected voxels than sets defined by 'local' activation (e.g. strong amplitude responses to faces in fusiform face area). Together, these findings demonstrate the important relationship between the complex functional organization of occipito-temporal cortex and wider brain connectivity.

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

High-level representations in human occipito-temporal cortex are indexed by distal connectivity

Walbrin

2021

Preprint

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“…Indeed, connectivity is a major constraint on the functional organization of cerebral cortex in general, such that the functional response of a given region is partially determined by the integration of relevant information shared via structural and functional connectivity to other brain regions (e.g. Garcea et al, 2019;Lee et al, 2019;Mahon & Caramazza, 2011;Sporns & Zwi, 2004;Sporns, 2004). More specifically, category-preferring OTC responses are functionally coupled with, and modulated by, distal regions that share the same category-preference (e.g.…”

Section: Introductionmentioning

confidence: 99%

High-Level Representations in Human Occipito-Temporal Cortex Are Indexed by Distal Connectivity

Walbrin

2021

J. Neurosci.

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“…This seems likely, as manipulable object recognition takes place through parallel processing, indicating an intensive exchange of information between the ventral and dorsal stream components in tool recognition for action (e.g. [27], [28], [29]). Curiously, we did not observe any substantial difference in saccadic reaction times depending on tool orientation.…”

Section: Discussionmentioning

confidence: 99%

Look What It Can Do: Tool Heads Prime Saccades

Pilacinski

DeHaan

Donato

et al. 2021

Preprint

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Tools are wielded by their handles, but a lot of information about their function comes from their heads (the action-ends). While hand motor responses are affected by the position of a tool’s handle, not much is known about what parts of a tool might affect eye gaze. Here weinvestigated whether eye saccadic movements are primed by tool handles, similar to handactions, or whether they are primed by tool heads (action-ends). We measured human saccadic reaction times while subjects were performing an attentional task. We found that saccadic reaction times were faster when performed to the side congruent with the tool head, even though “toolness” was irrelevant for the task. Our results show that heads are automatically processed by the visual system to orient eye movements, showing that eyes and hands are driven by distinct parts of manipulable objects and by the kinds of information these parts afford.

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Action at a distance on object-related ventral temporal representations

Cited by 30 publications

References 67 publications

High-level representations in human occipito-temporal cortex are indexed by distal connectivity

High-level representations in human occipito-temporal cortex are indexed by distal connectivity

High-Level Representations in Human Occipito-Temporal Cortex Are Indexed by Distal Connectivity

Look What It Can Do: Tool Heads Prime Saccades

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