Article2006

Rapid Development of Feature Binding in Visual Short-Term Memory

Lisa M. Oakes · Shannon Ross‐Sheehy · Steven J. Luck

127 citations0/0 files storedPsychological Science

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Child and Animal Learning Development Visual perception and processing mechanisms Cognitive and developmental aspects of mathematical skills

Abstract

The binding of object identity (color) and location in visual short-term memory (VSTM) was examined in 6.5- to 12.5-month-old infants (N= 144). Although we previously found that by age 6.5 months, infants can represent both color and location in VSTM, in the present study we observed that 6.5-month-old infants could not remember trivially simple color-location combinations across a 300-ms delay. However, 7.5-month-old infants could bind color and location as effectively as 12.5-month-old infants. Control conditions confirmed that the failure of 6.5-month-old infants was not a result of perceptual or attentional limitations. This rapid development of VSTM binding between 6.5 and 7.5 months occurs during a period of rapid increase in VSTM storage capacity and just after a period of dramatic neuroanatomical changes in parietal cortex. Thus, the ability to bind features and the ability to store multiple objects may both depend on a process that is mediated by posterior parietal cortex and is perhaps related to focused attention.

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References

2003The Development of Visual Short-Term Memory Capacity in Infants 1999Object individuation: infants’ use of shape, size, pattern, and color 1966Age Differences in Infants' Attention to Patterns of Different Complexities 2003Identification of objects in 9‐month‐old infants: integrating ‘what’ and ‘where’ information 1999Infants’ coding of location in continuous space

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