We use trade data from an online game economy to test the dopaminergic reward prediction error (DRPE) hypothesis: upon buying a game item at a price which is obviously too low, a player should become more active in the trading market. We find that players are more willing to buy goods in the in-game market after such an trade incident. Hence, the effect predicted by the DRPE model is visible. Y...

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A new multiple biometrics based encryption technique using digital holographic security system has been proposed. In this method, a face image of an enrolled person can be spatially multiplexed by a phase mask. This phase mask has been generated by the fingerprint of the enrolled person. In order to overcome the problem of rotation and scaling of the fingerprint, the log polar transform of the ...

PURPOSE To investigate the sensitivity of differential ratings of perceived exertion (dRPE) as measures of internal load. METHODS Twenty-two male university soccer players performed 2 maximal incremental-exercise protocols (cycle, treadmill) on separate days. Maximal oxygen uptake (VO2max), maximal heart rate (HRmax), peak blood lactate concentration (B[La]peak), and the preprotocol-to-postpr...

CASE REPORT We present two patients with Diffuse Retinal Pigment Epitheliopathy (DRPE) treated with verteporfin photodynamic therapy (PDT). The first patient was treated with PDT because there was foveal involvement. The second patient received PDT because he had multiple recurrences of DRPE with poor resolution following previous argon-laser photocoagulation. Resolution of the lesions occurred...