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Early-stage romantic love can induce euphoria, is a cross-cultural phenomenon, and is possibly a developed form of a mammalian drive to pursue preferred mates. It has an important influence on social behaviors that have reproductive and genetic consequences. To determine which reward and motivation systems may be involved, we used functional magnetic(More)
Scientists have described many physical and behavioral traits in avian and mammalian species that evolved to attract mates. But the brain mechanisms by which conspecifics become attracted to these traits is unknown. This paper maintains that two aspects of mate choice evolved in tandem: 1) traits that evolved in the "display producer" to attract mates and,(More)
Standardized visual acuity assessments are possible when consideration is given to legibility, acuity row legibility, letter spacing, optotype, row arrangement, and letter size gradation. The relative optotype legibilities reported by Sloan were verified experimentally under simulated conditions of optical defocus. Acuity row component letters were selected(More)
Romantic rejection causes a profound sense of loss and negative affect. It can induce clinical depression and in extreme cases lead to suicide and/or homicide. To begin to identify the neural systems associated with this natural loss state, we used functional magnetic resonance imaging to study 10 women and 5 men who had recently been rejected by a partner(More)
Three experienced divers were subjected simultaneously to world record hyperbaric pressures using an oxygen-helium-10% nitrogen breathing mixture. The simulated depth reached by these divers was 686 m (2250 ft). Cognitive and emotional state measures were obtained predive, during compression, decompression, and postdive. Although the divers showed no overt(More)
Romantic rejection causes a profound sense of loss and negative affect. It 25 can induce clinical depression and in extreme cases lead to suicide and/or homicide. To 26 begin to identify the neural systems associated with this natural loss state, we used 27 functional magnetic resonance imaging to study 10 women and 5 men who had recently 28 been rejected(More)
Von Graefe phoria measurements were obtained for ten prepresbyopic subjects at 40 cm and 6 m test distances using a vertical column of black letters on red, green, and white backgrounds. Phorias measured at 40 cm using red and white target backgrounds were similar, but the phoria measured using a green target background indicated a change toward greater(More)
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