The dynamics of infant visual foraging

Robertson, Steven S.; Masnick, Amy M.; Bacher, Leigh F.

doi:10.1111/j.1467-7687.2004.00338.x

Cited by 33 publications

(43 citation statements)

References 31 publications

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“…First, we added a simple fixation system (e.g. Robertson, Guckenheimer, Masnick & Bachner, 2004) that stochastically looks among left and right locations where the change and no-change displays appear, a center location where an attention-getter appears, and an away location with no task-relevant stimulation. The presence of stimuli at left and right locations biases the fixation system to look to the displays.…”

Section: Dynamic Neural Field Model Overviewmentioning

confidence: 99%

Stronger neural dynamics capture changes in infants’ visual working memory capacity over development

Perone

Simmering

Spencer

2011

Developmental Science

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Visual working memory (VWM) capacity has been studied extensively in adults, and methodological advances have enabled researchers to probe capacity limits in infancy using a preferential looking paradigm. Evidence suggests that capacity increases rapidly between 6 and 10 months of age. To understand how the VWM system develops, we must understand the relationship between the looking behavior used to study VWM and underlying cognitive processes. We present a dynamic neural field model that captures both real-time and developmental processes underlying performance. Three simulation experiments show how looking is linked to VWM processes during infancy and how developmental changes in performance could arise through increasing neural connectivity. These results provide insight into the sources of capacity limits and VWM development more generally.

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Section: Dynamic Neural Field Model Overviewmentioning

confidence: 99%

Stronger neural dynamics capture changes in infants’ visual working memory capacity over development

Perone

Simmering

Spencer

2011

Developmental Science

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“…In tracing the developmental origins of these putative face scanning differences in the autism phenotype, we motivate our study on the basis of well-established developmental models that have demonstrated that the infant in the first year is an active and efficient forager of environmental input in general (Robertson et al ., 2004), with increased attention to potential social communicative situations in particular (Csibra and Gergely, 2009; Gliga and Csibra, 2009). Specifically, we consider individual differences in the ability to modulate attention in response to a complex and varying environment as reflecting variation in ‘endogenous control’.…”

mentioning

confidence: 99%

What you see is what you get: contextual modulation of face scanning in typical and atypical development

Elsabbagh

Bedford

Senju

et al. 2013

Social Cognitive and Affective Neuroscience

102

106

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Infants’ visual scanning of social scenes is influenced by both exogenously and endogenously driven shifts of attention. We manipulate these factors by contrasting individual infants’ distribution of visual attention to the eyes relative to the mouth when viewing complex dynamic scenes with multiple communicative signals (e.g. peek-a-boo), relative to the same infant viewing simpler scenes where only single features move (moving eyes, mouth and hands). We explore the relationship between context-dependent scanning patterns and later social and communication outcomes in two groups of infants, with and without familial risk for autism. Our findings suggest that in complex scenes requiring more endogenous control of attention, increased scanning of the mouth region relative to the eyes at 7 months is associated with superior expressive language (EL) at 36 months. This relationship holds even after controlling for outcome group. In contrast, in simple scenes where only the mouth is moving, those infants, irrespective of their group membership, who direct their attention to the repetitive moving feature, i.e. the mouth, have poorer EL at 36 months. Taken together, our findings suggest that scanning of complex social scenes does not begin as strikingly different in those infants later diagnosed with autism.

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“…Although the associated shifts of attention might not be driven directly by perceptual or cognitive processes, automatic visual foraging driven by spontaneous motor activity would provide important input for those rapidly developing systems. In fact, dynamical models suggest that stochastic processes may play a central role in the organization of free looking by 1-month-olds (Robertson, Guckenheimer, Masnick, & Bacher, 2004), and spontaneous motor activity in the first 3 months has chaotic properties that make it a likely candidate for the biological instantiation of such a stochastic process (Robertson, Bacher, & Huntington, 2001a).…”

Section: Introductionmentioning

confidence: 99%

Robust coupling of body movement and gaze in young infants

Robertson

Johnson

Masnick

et al. 2007

Developmental Psychobiology

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ABSTRACT:In the first few months after birth, rapid bursts of body movement precede and possibly facilitate shifts of gaze during free looking, with potential consequences for perception and cognition. Here we report that the characteristic features of movement-gaze coupling found during free looking are preserved when attention is perturbed by a salient change in the visual environment. Twenty-four 3-month-olds looked at two attractive 3-dimensional objects while body movement and corneal reflections of the objects were recorded. Lateral head movement was measured offline. After approximately 2 s of looking at one stimulus, the nonfixated stimulus either began to rotate back and forth (distracter events) or remained motionless (control events). In distracter events, the motion of the nonfixated stimulus triggered substantial motor quieting, shortened the duration of the look, and shortened the time to reorient gaze compared to control events. Abbreviated motor quieting and small increases in lateral head movement occurred during control events at the same time in the look as the protracted motor quieting and increased head movement in distracter events. Despite these perturbations, the characteristic bursts of body movement that precede shifts of gaze during free looking occurred in both distracter and control events. The results demonstrate the robust nature of early movement-gaze coupling, raise questions about the specific role of attention in the dynamic links between body movement and gaze, and highlight the potential short and long term functional significance of movementgaze-attention coupling. ß 2007 Wiley Periodicals, Inc. Dev Psychobiol 49: 208-215, 2007.

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The dynamics of infant visual foraging

Cited by 33 publications

References 31 publications

Stronger neural dynamics capture changes in infants’ visual working memory capacity over development

Stronger neural dynamics capture changes in infants’ visual working memory capacity over development

What you see is what you get: contextual modulation of face scanning in typical and atypical development

Robust coupling of body movement and gaze in young infants

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