Orientation-selective adaptation to crowded illusory lines

Visual adaptation has been successfully used as a psychophysical tool for studying the functional organisation of visual awareness. It has been shown that orientation-selective adaptation to a grating pattern occurs in crowded conditions. In such conditions, simultaneous presentation of flanking distractors pushes the target stimulus out of conscious perception and severely impairs orientation discrimination in the periphery of the visual field. In the present study, orientation-selective adaptation to illusory lines induced by two line gratings abutting each other with a phase shift was examined in crowded and non-crowded conditions. To rule out the effects of lower level adaptations we used an animation paradigm in which the orientations of the two line gratings were altered repeatedly during adaptation phase without any change in the orientation of the resulting illusory line. Although performance of subjects in reporting the orientation of crowded illusory lines was at chance level, orientation-selective adaptation was preserved for crowded as well as non-crowded adapting targets. Two control experiments demonstrated that adaptation to endpoints of real lines at the location of abutting grating lines had minimal effect on the adaptation to illusory lines; and changes in the configuration of endpoints could not be responsible for better performance when adapting and test stimuli were different. We conclude that a crowding effect occurs after illusory lines have been processed in the visual stream. Since illusory lines seem to be represented at relatively early stages of visual processing (e.g. area V2), adaptation to crowded illusory stimuli suggests that neuronal activation in those early stages is not necessarily correlated with conscious perception.     

Breaking the Borders/Violating the Norms: An Archaeological Survey of an Intersex in a Traditional Society, Bam (South Eastern Iran)

How does breaking boundaries and passing identity red lines affect social and personal life? How do people with contradictory identities experience life in a traditional society? What will happen if the material and bodily identity of an individual goes against social norms? This research is a narration of some parts of an intersex life, an individual with a vague, unknown identity who contradicts the common norms of the society. In a traditional society, where gender and sexual identity act as a taboo and a powerful source of identity, people with uncommon (gender and sexual) identities suffer from an unstable social status. The story of Setareh/Saman’s life is told based on the archaeological remains from the debris of destroyed layers of a house in Bam. This is the story of transforming from female to male, the story of limitations, social inequalities and pressures on the individuals and the minorities who are condemned because of who they are.     

Anatomical limitations in mental transformations of body parts

Two experiments investigated whether possible and impossible body postures influence mental rotation processes differently considering that anatomical limitations constrain the way in which subjects perform mental transformations of body parts. In Experiment 1, mental rotation was performed on two stimuli presented simultaneously. Both possible and impossible body postures elicited mental rotation, although the mental rotation rate was slower for impossible postures. In Experiment 2, only one stimulus was presented at a time and subjects decided whether it represented a correct body-part configuration or not. A typical mental rotation function was only present for correct body-part configurations. The results are discussed in terms of the familiarity of the stimuli. Unfamiliar stimuli (physically impossible) are rotated via local representations of their parts, whilst global representations are used for rotating familiar (anatomically correct) stimuli.     

Physical Activity in Overweight and Obese Women: Association with Body Mass Index and Demographic Characteristics

The aim of present study was determination of the level of physical activity in overweight and obese women and its association with body mass index and various socio-demographic characteristics. In the present cross-sectional survey, the translated and validated form of International physical activity questionnaire was completed by 300 overweight and obese women from Iran-Tabriz. For each activity level, the MET-time value was calculated. The weight and height of subjects were measured and the BMI was calculated. In addition, subjects were asked to indicate their age, marital and socioeconomic status (including employment, educational status, salaries and material endowments) using a general information questionnaire. The One-way ANOVA, Independent t-test, multiple linear regression analysis were used for statistical analysis. Approximately, 45 % of women were physically inactive. Overweight women were more likely to be physically active as compared to obese, while the lowest physical activity rates were observed in older participants. With increasing age, the time spent in vigorous physical activity declined significantly (p-value?=?0.004). Physically active women had higher Socio-economic status. The average time spent on vigorous physical activities were significantly more in single than married women (p-value?相似文献   

Influence of general and specific autobiographical recall on subsequent behavior: The case of cognitive performance

Two studies tested the impact of autobiographical recall of general versus specific academic success or failure on actual task performance. As expected, it was found that general memories of failure and specific memories of success resulted in worse performance than general memories of success and specific memories of failure. In Study 1, this performance pattern was obtained on a standard math test. In Study 2, it was replicated on a test of intellectual ability, and a mediation by fear of failure was documented. The present findings offer direct evidence that autobiographical memories of success and failure impact actual performance and also reveal the role of memory specificity in this influence.     

When self-destructive thoughts flash through the mind: Failure to meet standards affects the accessibility of suicide-related thoughts

When individuals realize that they fail to attain important standards or expectations, they may be motivated to escape the self, which could lead thoughts of suicide to become more accessible. Six studies examined this hypothesis, mainly derived from escape theory (Baumeister, 1990). The results indicated that whenever individuals realize that they fail to attain an important standard, they experience increased accessibility of suicide-related thoughts (Studies 1-6). In line with the idea that such effects reflect motivations to escape from negative self-awareness, they were especially pronounced when associated with high levels of self-consciousness and escapist motivations (Study 1) and with a large discrepancy between self and standards (Studies 2-4). Moreover, failure to attain standards increased suicide-thought accessibility along with the desire for an altered state of consciousness (Study 5). Finally, increases in suicide-thought accessibility after failure were associated with simultaneous increases in accessibility of general concepts related to escape (Study 6). Implications of these findings for escape and terror management theories are discussed.