Object complexity modulates the association between action and perception in childhood

Freud, Erez; Culham, Jody C.; Namdar, Gal; Behrmann, Marlene

doi:10.1016/j.jecp.2018.11.004

Cited by 15 publications

(16 citation statements)

References 46 publications

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“…Such findings confirm that there is early sensitivity of this region to object shape (Emberson et al, 2017), but that the underlying neural representations are still subject to a protracted developmental trajectory. This conclusion is also consistent with behavioral observations that have documented reduced sensitivity to object structural information and spatial organization in children (Freud, Culham, Namdar, & Behrmann, 2019;Kovács, Kozma, Fehér, & Benedek, 1999).…”

Section: Discussionsupporting

confidence: 91%

Protracted Developmental Trajectory of Shape Processing along the Two Visual Pathways

Freud

Plaut

Behrmann

2019

Journal of Cognitive Neuroscience

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Studies of the emergence of shape representations in childhood have focused primarily on the ventral visual pathway. Importantly, however, there is increasing evidence that, in adults, the dorsal pathway also represents shape-based information. These dorsal representations follow a gradient with more posterior regions being more shape-sensitive than anterior regions and with representational similarity in some posterior regions that is equivalent to that observed in some ventral regions. To explore the emergence and nature of dorsal shape representations in development, we acquired both fMRI BOLD signals and behavioral data in children (aged 8–10 years) using a parametric image scrambling paradigm. Children exhibited adult-like large-scale organization of shape processing along both ventral and dorsal pathways. Also, as in adults, the activation profiles of children's posterior dorsal and ventral regions were correlated with recognition performance, reflecting a possible contribution of these signals to perception. There were age-related changes, however, with children being more affected by the distortion of shape information than adults, both behaviorally and neurally. These findings reveal that shape-processing mechanisms along both dorsal and ventral pathways are subject to a protracted developmental trajectory.

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Section: Discussionsupporting

confidence: 91%

Protracted Developmental Trajectory of Shape Processing along the Two Visual Pathways

Freud

Plaut

Behrmann

2019

Journal of Cognitive Neuroscience

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“…Our results, collectively, support an input-driven model of white matter development ( Figure 1 ) and suggest that the PVP might facilitate interactions between dorsal and ventral visual streams during development (14,15) . We first demonstrated that the difference between child and adult microstructure increased linearly from early to late pathways: VOF, VHP, PVP, DHP, FAT ( Figure 3 ).…”

Section: Slf3)supporting

confidence: 82%

“…A large body of work has demonstrated a degree of functional segregation between perceptual processing associated with the ventral stream and action processing associated with the dorsal stream (1,2,6,(8)(9)(10)(11) . However, these two streams do interact (5,7,12,13) and a handful of studies suggest that the two streams interact differently in childhood than in adulthood (14,15) .…”

Section: Introductionmentioning

confidence: 99%

Development of white matter tracts between and within the dorsal and ventral streams

Vinci‐Booher

Caron

Bullock

et al. 2021

Preprint

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The degree of interaction between the ventral and dorsal visual streams has been discussed in multiple scientific domains for decades. Recently, several white matter tracts that directly connect the dorsal and ventral streams have become possible to study using automated and reproducible methods. The developmental trajectory of this set of tracts, the posterior vertical pathway (PVP), is yet to be described. We propose an input-driven model of white matter development and provide evidence for the model by focusing on PVP development. We used reproducible cloud-computing methods and diffusion imaging from adults and children (ages 5-8 years) to compare PVP development to that of tracts within the ventral and dorsal pathways. PVP microstructure was more adult-like than dorsal stream microstructure but less adult-like than ventral stream microstructure. Additionally, PVP microstructure was more similar to the microstructure of the ventral than dorsal stream and was predicted by performance on a perceptual task in children. Overall, results suggest a key role for the PVP in the development of the dorsal visual stream that may be related to its ability to facilitate interactions between ventral and dorsal streams during learning. The results are consistent with the proposed model, suggesting that the microstructural development of major white matter pathways is related, at least in part, to the feed-forward propagation of sensory information within the visual system.Significance StatementUnderstanding white matter development is important to building predictive models that can inform interventions and targeted educational methods. We propose and provide evidence for an input-driven model of white matter development. We tested an uncharted aspect of human brain development. Namely, how the recently described posterior vertical white matter tracts develop. Our results suggest a feed-forward developmental progression along the known direct anatomical connections from posterior visual areas to anterior ventral and dorsal areas. Our results suggest fundamental biological mechanisms that clarify the role of white matter in predicting human learning and behavior.

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“…Then we averaged all trials within each condition to show group-level velocity and aperture profile in absolute time (in seconds). We additionally sampled the velocity and aperture size at each normalized time point (Freud, Culham, Namdar, & Behrmann, 2019;Freud & Ganel, 2015;Ganel et al, 2012) to plot the velocity profile of the hand and foot at an aligned time scale.…”

Section: Discussionmentioning

confidence: 99%

Are reaching and grasping effector-independent? Similarities and differences in reaching and grasping kinematics between the hand and foot

Liu

Caracoglia

Sen

et al. 2021

Preprint

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While reaching and grasping are highly prevalent manual actions, neuroimaging studies provide evidence that their neural representations may be shared between different body parts, i.e. effectors. If these actions are guided by effector-independent mechanisms, similar kinematics should be observed when the action is performed by the hand or by a cortically remote and less experienced effector, such as the foot. We tested this hypothesis with two characteristic components of action: the initial ballistic stage of reaching, and the preshaping of the digits during grasping based on object size. We examined if these kinematic features reflect effector-independent mechanisms by asking participants to reach toward and to grasp objects of different widths with their hand and foot. First, during both reaching and grasping, the velocity profile up to peak velocity matched between the hand and the foot, indicating a shared ballistic acceleration phase. Secondly, maximum grip aperture and time of maximum grip aperture of grasping increased with object size for both effectors, indicating encoding of object size during transport. Differences between the hand and foot were found in the deceleration phase and time of maximum grip aperture, likely due to biomechanical differences and the participants’ inexperience with foot actions. These findings provide evidence for effector-independent visuomotor mechanisms of reaching and grasping that generalize across body parts.

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Object complexity modulates the association between action and perception in childhood

Cited by 15 publications

References 46 publications

Protracted Developmental Trajectory of Shape Processing along the Two Visual Pathways

Protracted Developmental Trajectory of Shape Processing along the Two Visual Pathways

Development of white matter tracts between and within the dorsal and ventral streams

Are reaching and grasping effector-independent? Similarities and differences in reaching and grasping kinematics between the hand and foot

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