Document Detail


Development of sensitivity to global form and motion in macaque monkeys (Macaca nemestrina).
MedLine Citation:
PMID:  22580018     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To explore the relative development of the dorsal and ventral extrastriate processing streams, we studied the development of sensitivity to form and motion in macaque monkeys (Macaca nemestrina). We used Glass patterns and random dot kinematograms (RDK) to assay ventral and dorsal stream function, respectively. We tested 24 animals, longitudinally or cross-sectionally, between the ages of 5 weeks and 3 years. Each animal was tested with Glass patterns and RDK stimuli with each of two pattern types--circular and linear--at each age using a two alternative forced-choice task. We measured coherence threshold for discrimination of the global form or motion pattern from an incoherent control stimulus. Sensitivity to global motion appeared earlier than to global form and was higher at all ages, but performance approached adult levels at similar ages. Infants were most sensitive to large spatial scale (Δx) and fast speeds; sensitivity to fine scale and slow speeds developed more slowly independently of pattern type. Within the motion domain, pattern type had little effect on overall performance. However, within the form domain, sensitivity for linear Glass patterns was substantially poorer than that for concentric patterns. Our data show comparatively early onset for global motion integration ability, perhaps reflecting early development of the dorsal stream. However, both pathways mature over long time courses reaching adult levels between 2 and 3 years after birth.
Authors:
Lynne Kiorpes; Tracy Price; Cynthia Hall-Haro; J Anthony Movshon
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-05-02
Journal Detail:
Title:  Vision research     Volume:  63     ISSN:  1878-5646     ISO Abbreviation:  Vision Res.     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-06-12     Completed Date:  2012-08-16     Revised Date:  2013-06-25    
Medline Journal Info:
Nlm Unique ID:  0417402     Medline TA:  Vision Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  34-42     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Center for Neural Science, New York University, York, NY 10003, USA. lynne@cns.nyu.edu
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MeSH Terms
Descriptor/Qualifier:
Animals
Discrimination (Psychology)
Form Perception / physiology*
Macaca nemestrina
Motion Perception / physiology*
Pattern Recognition, Visual / physiology
Photic Stimulation / methods
Sensory Thresholds / physiology
Grant Support
ID/Acronym/Agency:
EY02017/EY/NEI NIH HHS; EY05864/EY/NEI NIH HHS; P30EY13079/EY/NEI NIH HHS; R01 EY002017/EY/NEI NIH HHS; R01 EY005864/EY/NEI NIH HHS; RR00166/RR/NCRR NIH HHS; T32 EY007136/EY/NEI NIH HHS; T32EY007136/EY/NEI NIH HHS
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