Abstract：
:Visual development is thought to be completed at an early age. We suggest that the maturation of the visual brain is not homogeneous: functions with greater need for early availability, such as visuomotor control, mature earlier, and the development of other visual functions may extend well into childhood. We found significant improvement in children between 5 and 14 years in visual spatial integration by using a contour-detection task. The data show that long-range spatial interactions-subserving the integration of orientational information across the visual field-span a shorter spatial range in children than in adults. Performance in the task improves in a cue-specific manner with practice, which indicates the participation of fairly low-level perceptual mechanisms. We interpret our findings in terms of a protracted development of ventral visual-stream function in humans.
journal_name
Proc Natl Acad Sci U S Aauthors
Kovács I,Kozma P,Fehér A,Benedek Gdoi
10.1073/pnas.96.21.12204keywords:
subject
Has Abstractpub_date
1999-10-12 00:00:00pages
12204-9issue
21eissn
0027-8424issn
1091-6490journal_volume
96pub_type
杂志文章abstract：:The heavy chains of both botulinum neurotoxin type B and tetanus toxin form channels in planar bilayer membranes. These channels have pH-dependent and voltage-dependent properties that are remarkably similar to those previously described for diphtheria toxin. Selectivity experiments with anions and cations show that t...
journal_title：Proceedings of the National Academy of Sciences of the United States of America
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journal_title：Proceedings of the National Academy of Sciences of the United States of America
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journal_title：Proceedings of the National Academy of Sciences of the United States of America
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更新日期：1996-03-05 00:00:00
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journal_title：Proceedings of the National Academy of Sciences of the United States of America
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更新日期：2009-06-23 00:00:00
