Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - From parts to wholes: mechanisms of development in infant visual object processing
AU - Westermann, G
AU - Mareschal, D
PY - 2004/3
Y1 - 2004/3
N2 - Visual object processing in infancy is often described as proceeding from an early stage in which object features are processed independently to a later stage in which relations between features are taken into account (e.g., Cohen, 1998). Here we present the Representational Acuity Hypothesis, which argues that this behavioral shift can be explained by a developmental decrease in the size of neural receptive fields in the cortical areas responsible for object representation, together with a tuning to specific object features. We evaluate this hypothesis with a connectionist model of infant perceptual categorization. The model shows a behavioral shift in featural to relational processing consistent with similar results observed in the infant categorization experiments of Younger (1985) and Younger and Cohen (1986).
AB - Visual object processing in infancy is often described as proceeding from an early stage in which object features are processed independently to a later stage in which relations between features are taken into account (e.g., Cohen, 1998). Here we present the Representational Acuity Hypothesis, which argues that this behavioral shift can be explained by a developmental decrease in the size of neural receptive fields in the cortical areas responsible for object representation, together with a tuning to specific object features. We evaluate this hypothesis with a connectionist model of infant perceptual categorization. The model shows a behavioral shift in featural to relational processing consistent with similar results observed in the infant categorization experiments of Younger (1985) and Younger and Cohen (1986).
KW - RECEPTIVE-FIELDS
KW - NEURAL NETWORKS
KW - STRIATE CORTEX
KW - CAUSAL EVENT
KW - PERCEPTION
KW - CATEGORIZATION
KW - SELECTIVITY
KW - SENSITIVITY
KW - ACUITY
KW - MODELS
U2 - 10.1207/s15327078in0502_2
DO - 10.1207/s15327078in0502_2
M3 - Journal article
VL - 5
SP - 131
EP - 151
JO - Infancy
JF - Infancy
SN - 1525-0008
IS - 2
ER -