https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:7000 Sat 24 Mar 2018 08:37:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1911 Sat 24 Mar 2018 08:33:12 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1307 Sat 24 Mar 2018 08:32:43 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:1245 Sat 24 Mar 2018 08:28:34 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:19700 n = 67) were either newborn or raised under incandescent light until 14, 37 or 45 days of age (20, 44, 20 and 11 eyes respectively). Refractive error was measured on-axis and 30° off-axis in the superior (SVF), inferior (IVF), temporal (TVF) and nasal (NVF) visual fields. Eye shape was analyzed from images of frozen hemisections in both the horizontal and vertical mid plane in 14 day animals, and in the vertical plane at 0, 14 and 45 days of age. Axial distances in vitro were correlated with in vivo high frequency ultrasound (r² = 0.90). In the horizontal plane, asymmetry was caused by a ±6° conical zone surrounding the optic nerve (12° off-axis in NVF), suggesting significant myopia in this zone. At 30°, there was no asymmetry in eye length, but the NVF was +1.7 D more myopic due to asymmetry in corneal power. In the vertical plane at 30°, the IVF was more myopic than the SVF by −3.8 D at 0 days, −5.9 D at 14 days and −6.0 D at 37 days. It resulted from vertical asymmetry in the distance of the retina from the lens center, which was longest in the mid IVF. This non-linear ramp retina was present at birth. In older animals, the peak of the ramp shifted more centrally, and the eye developed longer lengths in the extreme upper periphery (SVF) which may have been caused by the low position of the room ceiling. The vertical asymmetry in eye shape was mirrored by changes in choroid thickness, suggesting a mechanism by which eye shape was refined by vision during development. In early life, ocular growth in the vertical plane was 1.7 times higher in the center relative to the periphery, a pattern that reversed in the following month. Since emmetropization was achieved over this period, local visual cues related to clear vision may provide a switch to change ocular growth from a central to a peripheral emphasis.]]> Sat 24 Mar 2018 07:53:48 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:250 Sat 24 Mar 2018 07:42:46 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:25952 capacity coefficient from Systems Factorial Technology (SFT) as a quantitative approach for formalizing and rigorously testing predictions made by local and Gestalt theories of features. As a simple, easily controlled domain for testing this approach, we focus on the local feature of location and the emergent features of Orientation and Proximity in a pair of dots. We introduce a redundant-target change detection task to compare our capacity measure on (1) trials where the configuration of the dots changed along with their location against (2) trials where the amount of local location change was exactly the same, but there was no change in the configuration. Our results, in conjunction with our modeling tools, favor the Gestalt account of emergent features. We conclude by suggesting several candidate information-processing models that incorporate emergent features, which follow from our approach.]]> Sat 24 Mar 2018 07:41:24 AEDT ]]> https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:26478 Sat 24 Mar 2018 07:27:15 AEDT ]]>