Citation: Malavita MS, Vidyasagar TR, McKendrick AM. The effect of aging and attention on visual crowding and surround suppression of perceived contrast threshold. Invest Ophthalmol Vis Sci. 2017;58:860-867. DOI: 10.1167/iovs.16-20632 PURPOSE. The purpose of this study was to study how

threshold is achieved with a specific stimulus size. But the contrast thresh-olds for these optimal stimuli are not independent of retinal eccentricity as cortical magnifica-tion scaling would predict. With high-contrast targets, however, threshold target sizes were con-sistent with cortical magnification

. Algorithm for generation of threshold prototype-based rules are described and a comparison with neurofuzzy systems on a number of datasets provided. Results show that systems for data understanding generating prototypes deserve at least the same attention as that enjoyed by the neurofuzzy systems. 1

The external noise paradigm (Z.-L. Lu & B. A. Dosher, 1998) was applied to investigate mechanisms of spatial attention in location precuing. Observers were precued or simultaneously cued to identify 1 of 4 pseudocharacters embedded in various amounts of external noise. The cues were either

Threshold models have gained much recent attention in applied economics for modeling nonlinear behavior. The appeal for these models is in part due to the observable pattern that many economic variables follow, such as asymmetric adjustment towards equilibrium. Recent developments in model

, psychologists have attempted to determine whether impoverished visual stimuli can be perceived without awareness (e.g., Eriksen, 1960; Holender, 1986; Sidis, 1898). In the 1950s, this area of research came to the forefront of psychology and to the attention of the lay public when an attempt was made to induce

Abstract—Nuclear norm minimization (NNM) has recently gained attention for its use in rank minimization problems. In this paper, we define weak, sectional and strong recovery for NNM to succeed at finding the low rank solution. We find tight conditions for these and analyze them for the case where

Abstract. Recently, democratic group signatures(DGSs) particularly catch our attention due to their great flexibilities, i.e., no group manager, anonymity, and individual traceability. In existing DGS schemes, individual traceability says that any member in the group can reveal the actual signer’s

Attentional limits on perception and memory were measured by the decline in performance with increasing numbers of objects in a display. Multiple objects were presented to Ss who discrimi-nated visual attributes. In a representative condition, 4 lines were briefly presented followed by a single

Abstract. A (k, n) threshold secret image sharing scheme, abbreviated as (k, n)-TSISS, splits a secret image into n shadow images in such a way that any k shadow images can be used to reconstruct the secret image exactly. In 2002, for (k, n)-TSISS, Thien and Lin reduced the size of each shadow