Magnitude, precision, and realism of depth perception in stereoscopic vision

Our perception of depth is substantially enhanced by the fact that we have binocular vision. This provides us with more precise and accurate estimates of depth and an improved qualitative appreciation of the three-dimensional (3D) shapes and positions of objects. We assessed the link between these quantitative and qualitative aspects of 3D vision. Specifically, we wished to determine whether the realism of apparent depth from binocular cues is associated with the magnitude or precision of perceived depth and the degree of binocular fusion. We presented participants with stereograms containing randomly positioned circles and measured how the magnitude, realism, and precision of depth perception varied with the size of the disparities presented. We found that as the size of the disparity increased, the magnitude of perceived depth increased, while the precision with which observers could make depth discrimination judgments decreased. Beyond an initial increase, depth realism decreased with increasing disparity magnitude. This decrease occurred well below the disparity limit required to ensure comfortable viewing

A sensitive and simple RT-LAMP assay for sarbecovirus screening in bats

202412 bcrcVersion of RecordRGCOthersHealth and Medical Research Fund (HMRF); Ministry of Education (MOE); National Science and Technology Council (NSTC)PublishedC

Multilevel governance in the cross-boundary region of Hong Kong: Pearl River Delta, China

Multilevel governance (MLG) has been extensively applied to elucidate the dispersion of decisionmaking across multiple levels of governments—supranational, national, and subnational in the European Union (EU) and its member states. In this paper I attempt to contribute to the literature through the case of Hong Kong (HK) and the Pearl River Delta (PRD) in China. I argue that a pattern of MLG has been emerging since the early 2000s in this subnational-level cross-boundary region, accompanied by the gradual institutionalization of economic integration between Hong Kong and the PRD. Decisionmaking competencies in the HK – PRD cross-boundary region have tended to disperse across multiple levels of governments ranging from the central, Guangdong Provincial, HK Special Administrative Region, to municipal, city, and county level of the PRD, as well as businesses and residents on both sides of the boundary. In response to the lack of an effective regional authority and the unique political framework of ‘one country, two systems’, central government has played a somewhat backstage coordinator role in the transition of the integration mechanism and cross-boundary governance. Previous explanations of the integration and governance of the HK – PRD cross-boundary region need to be reevaluated. A regional level authority, similar to the supranational institutions in the EU, is urgently required to foster and upgrade cross-boundary cooperation