Development of sensitivity to global form and motion in macaque monkeys (Macaca nemestrina).
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, r...
| Publicado en: | Vision Research Vol. 63; pp. 34 - 43 |
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| Autores principales: | , , , , |
| Formato: | research Journal Article |
| Publicado: |
Pergamon Press - An Imprint of Elsevier Science
6/15/2012
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104489202&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104489202 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00426989 2FL jtl: Vision Research issn: 00426989 maglogo: N pubinfo: dt: 6/15/2012 vid: 63 pid: 2410 pub: Pergamon Press - An Imprint of Elsevier Science artinfo: ui: 104489202 NLM22580018 2011643954 10.1016/j.visres.2012.04.018 NLM22580018 PMC3374036 104489202 ppf: 34 ppct: 9 formats: tig: atl: Development of sensitivity to global form and motion in macaque monkeys (Macaca nemestrina). aug: au: Kiorpes, Lynne Price, Tracy Hall-Haro, Cynthia Anthony Movshon, J Movshon, J Anthony affil: Center for Neural Science, New York University, York, NY 10003, USA. lynne@cns.nyu.edu sug: subj: Perception Visual Perception Physiology Animal Studies Discrimination Physical Stimulation Methods Primates ab: 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. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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