Development of Sensitivity to Texture and Contour Information in the Human Infant

Norcia, Anthony M.; Pei, Francesca; Bonneh, Yoram; Hou, Chenping; Sampath, Vanitha; Pettet, Mark W.

doi:10.1162/0898929053467596

Cited by 38 publications

(34 citation statements)

References 62 publications

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“…Closure facilitates contour integration (Pettet et al, 1998; Mathes and Fahle, 2007; Gerhardstein et al, 2012), object detection (Machilsen and Wagemans, 2011), texture-segmentation (Atkinson and Braddick, 1992; Norcia et al, 2005; Machilsen and Wagemans, 2011), and figure-ground segmentation (Field et al, 1993; Kovács and Julesz, 1993; Kovács, 1996). To date, few studies have explored the development of such a closure mechanism across childhood (Gerhardstein et al, 2004; Hadad and Kimchi, 2006; Baker et al, 2008; Hadad et al, 2010a; Hipp et al, 2014).…”

Section: Path To Object Perceptionmentioning

confidence: 99%

The development of contour processing: evidence from physiology and psychophysics

et al. 2014

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Object perception and pattern vision depend fundamentally upon the extraction of contours from the visual environment. In adulthood, contour or edge-level processing is supported by the Gestalt heuristics of proximity, collinearity, and closure. Less is known, however, about the developmental trajectory of contour detection and contour integration. Within the physiology of the visual system, long-range horizontal connections in V1 and V2 are the likely candidates for implementing these heuristics. While post-mortem anatomical studies of human infants suggest that horizontal interconnections reach maturity by the second year of life, psychophysical research with infants and children suggests a considerably more protracted development. In the present review, data from infancy to adulthood will be discussed in order to track the development of contour detection and integration. The goal of this review is thus to integrate the development of contour detection and integration with research regarding the development of underlying neural circuitry. We conclude that the ontogeny of this system is best characterized as a developmentally extended period of associative acquisition whereby horizontal connectivity becomes functional over longer and longer distances, thus becoming able to effectively integrate over greater spans of visual space.

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Section: Path To Object Perceptionmentioning

confidence: 99%

The development of contour processing: evidence from physiology and psychophysics

et al. 2014

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“…However, they have been used in the study of global form and motion development (Hou, Gilmore, Pettet, & Norcia, 2009;Norcia et al, 2005;Palomares, Pettet, Vildavski, Hou, & Norcia, 2009;Wattam-Bell et al, 2010;Weinstein et al, 2012). For example, Wattam-Bell et al (2010) found distinct difference between infant and adult global form and motion SSVEP topographies.…”

Section: Introductionmentioning

confidence: 99%

Cortical processing of global form, motion and biological motion under low light levels

et al. 2016

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'Cortical processing of global form, motion and biological motion under low light levels.', Vision research., 121. pp. 39-49. Further information on publisher's website: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. however, global form thresholds were relatively more impaired than those for global motion or biological motion. VEP responses to coherent global form and motion were reduced in low light, and motion responses showed a shift in topography from the midline to more lateral locations. Contrast sensitivity measures confirmed that basic visual processing was also affected by low light. However, comparison with CSF reductions achieved by optical blur indicated that these were insufficient to explain the pattern of results, although the temporal properties of the rod system may also play a role.Overall, mid-level processing in extra-striate areas is differentially affected by light level, in ways that cannot be explained in terms of low-level spatiotemporal sensitivity. A topographical shift in scotopic motion VEP responses may reflect either changes to inhibitory feedback mechanisms between V1 and extra-striate regions or a reduction of input to the visual cortex. These results provide insight into how higher-level cortical vision is normally organised in absence of cone input, and provide a basis for comparison with patients with cone dystrophies, before and after treatments aiming to restore cone function.

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“…Authors that have specifically studied maturation of brain responses to simple and complex stimulus are in agreement with this idea; they found that EEG responses evoked by simple orientation stimuli appear between 2 and 5 months of age and begin to resemble adult-like patterns within the first year of age (Norcia et al, 2005). However, our findings suggest that VEP responses to orientation continue to develop beyond this age, as we found significant amplitude reduction for oriVEP between 12 and 24 months, accompanied with a significant latency reduction between 12 and 36 months.…”

Section: Electrophysiological Results For Children Born Full-termmentioning

confidence: 61%

Early childhood development of visual texture segregation in full-term and preterm children

et al. 2015

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To date, very little is known about the normal development trajectory of visual texture segregation, or how it is affected by preterm birth. The goal of this study was to characterize the development of visual texture segregation using texture segregation visual evoked potentials (tsVEPs) in children born full-term and children born preterm without major neurological impairment. Forty-five full-term and 43 preterm children were tested at either 12, 24 or 36 months of age (corrected age for prematurity at 12 and 24 months old). VEPs were obtained using two lower-level stimuli defined by orientation (oriVEP) and two higher-level stimuli defined by texture (texVEP). TsVEP was obtained by dividing by two the subtraction of oriVEP from texVEP. Results show a clear maturation of the processes underlying visual texture segregation in the full-term group, with a significant N2 latency reduction between 12 and 36 months of age for all conditions. Significant N2 amplitude reduction was observed for oriVEP between 12 and 24 months, as well as for texVEP between 12 and 24 months, and 12 and 36 months. Comparison between full-term and preterm children indicated significantly lower N2 amplitude for the preterm group at 12 months for oriVEP and texVEP. These differences were no longer apparent at 24 months of age, suggesting that children born preterm catch up with their full-term counterparts somewhere between 12 and 24 months of age. Our results appear to reflect a maturational delay in preterm children in both lower-level and higher-level visual processing during, at least, early childhood.

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Development of Sensitivity to Texture and Contour Information in the Human Infant

Cited by 38 publications

References 62 publications

The development of contour processing: evidence from physiology and psychophysics

The development of contour processing: evidence from physiology and psychophysics

Cortical processing of global form, motion and biological motion under low light levels

Early childhood development of visual texture segregation in full-term and preterm children

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