Development of visual center of mass localization for grasp point selection

Duemmler, Thomas; Schoeberl, Petra; Schwarzer, Gudrun

doi:10.1016/j.cogdev.2008.06.002

Cited by 7 publications

(6 citation statements)

References 42 publications

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“…It deals, however, with a different microdomain: intuitive knowledge about physical support. This microdomain is of particular interest because an exceptionally large discrepancy exists between the sophisticated knowledge and learning capacities ascribed to young infants by Baillargeon, Needham, and colleagues on the one hand (Baillargeon, Needham, & DeVos, 1992; Needham & Baillargeon, 1993; for reviews, see Baillargeon, 1995, 1996, 2002) and the incompetencies of older children in the classical balance scale paradigm (Siegler, 1981) and related action tasks on the other hand (Duemmler, Schoeberl, & Schwarzer, 2008; Karmiloff-Smith & Inhelder, 1974; Krist, Horz, & Schönfeld, 2005).…”

Section: Development Of Intuitions About Supportmentioning

confidence: 99%

Development of intuitions about support beyond infancy.

Krist

2010

Developmental Psychology

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In a series of 3 experiments modeled after infant studies, 3- to- 6-year-old children's intuitive knowledge about support was assessed. Different objects were shown either sufficiently supported or not. Children had to predict whether a block would remain standing on a platform upon release or make perceptual judgments about the possibility of a shown block-on-platform configuration. Overall, performance was strongly age-related and independent of task context. Sensitivity for the amount of contact between object and support was clearly evidenced for each of the age-groups tested and was almost perfect in 5- and 6-year-olds. By contrast, sensitivity for the proportion of an object's volume positioned over the support was only marginally reliable in 3-year-olds and still far from perfect in 6-year-olds. It is concluded that basic intuitions about support undergo distinct developmental change beyond infancy and are not yet fully developed in kindergartners.

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Section: Development Of Intuitions About Supportmentioning

confidence: 99%

Development of intuitions about support beyond infancy.

Krist

2010

Developmental Psychology

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“…Specifically, this study examined participants’ point of grasp along the object depending on weight distribution. When grasping unbalanced objects, healthy adults intuitively choose a grasp close to the center of mass in order to minimize the energy required by grip force to compensate for load torque (Salimi et al, 2003 ; Duemmler et al, 2008 ; Endo et al, 2011 ). This is said to be estimated visually prior to initial object grasping, which is reflected in accurate grasping of unfamiliar objects for the first time (Lederman and Wing, 2003 ) or when asked to visually point to the center of mass (Baud-Bovy and Soechting, 2001 ; Duemmler et al, 2008 ).…”

Section: Introductionmentioning

confidence: 99%

Impaired Communication Between the Dorsal and Ventral Stream: Indications from Apraxia

Evans

Edwards

Taylor

et al. 2016

Front. Hum. Neurosci.

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Patients with apraxia perform poorly when demonstrating how an object is used, particularly when pantomiming the action. However, these patients are able to accurately identify, and to pick up and move objects, demonstrating intact ventral and dorsal stream visuomotor processing. Appropriate object manipulation for skilled use is thought to rely on integration of known and visible object properties associated with “ventro-dorsal” stream neural processes. In apraxia, it has been suggested that stored object knowledge from the ventral stream may be less readily available to incorporate into the action plan, leading to an over-reliance on the objects’ visual affordances in object-directed motor behavior. The current study examined grasping performance in left hemisphere stroke patients with (N = 3) and without (N = 9) apraxia, and in age-matched healthy control participants (N = 14), where participants repeatedly grasped novel cylindrical objects of varying weight distribution. Across two conditions, object weight distribution was indicated by either a memory-associated cue (object color) or visual-spatial cue (visible dot over the weighted end). Participants were required to incorporate object-weight associations to effectively grasp and balance each object. Control groups appropriately adjusted their grasp according to each object’s weight distribution across each condition, whereas throughout the task two of the three apraxic patients performed poorly on both the memory-associated and visual-spatial cue conditions. A third apraxic patient seemed to compensate for these difficulties but still performed differently to control groups. Patients with apraxia performed normally on the neutral control condition when grasping the evenly weighted version. The pattern of behavior in apraxic patients suggests impaired integration of visible and known object properties attributed to the ventro-dorsal stream: in learning to grasp the weighted object accurately, apraxic patients applied neither pure knowledge-based information (the memory-associated condition) nor higher-level information given in the visual-spatial cue condition. Disruption to ventro-dorsal stream predicts that apraxic patients will have difficulty learning to manipulate new objects on the basis of information other than low-level visual cues such as shape and size.

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“…Attempts to verify this U-shaped developmental trend have yielded mixed results, however: Although Messer (1999, 2003) obtained partial support for the U-shaped trend postulated by Karmiloff-Smith (1992), Krist, Horz, and Schönfeld (2005) observed gradual improvements in children's performance across the age range from 4 through 8 years (see Cheung & Wong, 2011, for similar behavioural results). That preschoolers are not as proficient in handling asymmetrical objects as one would expect from Karmiloff-Smith's writings (Karmiloff-Smith, 1992;Karmiloff-Smith & Inhelder, 1974) was also shown by Dümmler et al (2008). In their study, 4-to 11-year-old children had to lift small barbells that were loaded with varying numbers of weight on each side.…”

Section: Is There a U-shaped Developmental Trend?mentioning

confidence: 94%

“…A problem for a strict response-format account lies in the fact already mentioned that preschoolers do exhibit difficulties in considering an object's weight distribution not only in verbal tasks (Krist, 2010(Krist, , 2013 but also in action tasks, such as balancing and lifting (e.g., Dümmler et al, 2008;Krist et al, 2005). Moreover, a reaching paradigm was used in some infant studies with results comparable with those obtained with the VoE method.…”

Section: Attempts To Resolve the Puzzle: Performance And Response-formentioning

confidence: 99%

“…Using a novel eye-tracking paradigm, we obtained converging evidence for the claim that children’s naïve statics undergoes substantial developmental change beyond infancy (cf. Bonawitz, van Schijndel, Friel, & Schulz, 2012; Dümmler, Schöberl, & Schwarzer, 2008; Karmiloff-Smith & Inhelder, 1974; Krist, 2010; Pine & Messer, 2003; Siegler, 1981). Overall, our results suggest continuous developmental growth rather than a U-shaped developmental trend between 2 and 6 years.…”

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confidence: 99%

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Development of basic intuitions about physical support during early childhood: Evidence from a novel eye-tracking paradigm

Krist¹,

Atlas²,

Fischer³

et al. 2018

Quarterly Journal of Experimental Psychology

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Using a novel eye-tracking paradigm, we assessed the development of 2- to 6-year-old children's intuitions about the physical support of symmetrical and asymmetrical objects in two experiments (Experiment 1: N = 98; Experiment 2: N = 288). Children were presented with video sequences demonstrating how two identical blocks were lowered onto a platform before being released simultaneously. In the critical test trials, both blocks remained in place although only one of them was sufficiently supported. As expected, children tended to look longer at the block, which should have fallen. Taken together, the results indicate that even 2-year-old children are sensitive to the amount of contact between symmetrical blocks and a supporting platform and even anticipate which block is going to fall. Nonetheless, we found a considerable improvement with age in this respect. Two-year-olds did not consider an object's weight distribution reliably when assessing its stability and even older preschoolers performed much more poorly with asymmetrical than symmetrical blocks. We conclude that intuitions about support are still weak and limited in toddlers and that they improve considerably during early childhood.

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Development of visual center of mass localization for grasp point selection

Cited by 7 publications

References 42 publications

Development of intuitions about support beyond infancy.

Development of intuitions about support beyond infancy.

Impaired Communication Between the Dorsal and Ventral Stream: Indications from Apraxia

Development of basic intuitions about physical support during early childhood: Evidence from a novel eye-tracking paradigm

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