Dissociated Mechanisms of Extracting Perceptual Information into Visual Working Memory

The processing mechanisms of visual working memory (VWM) have been extensively explored in the recent decade. However, how the perceptual information is extracted into VWM remains largely unclear. The current study investigated this issue by testing whether the perceptual information was extracted into VWM via an integrated-object manner so that all the irrelevant information would be extracted (object hypothesis), or via a feature-based manner so that only the target-relevant information would be extracted (feature hypothesis), or via an analogous processing manner as that in visual perception (analogy hypothesis).High-discriminable information which is processed at the parallel stage of visual perception and fine-grained information which is processed via focal attention were selected as the representatives of perceptual information. The analogy hypothesis predicted that whereas high-discriminable information is extracted into VWM automatically, fine-grained information will be extracted only if it is task-relevant. By manipulating the information type of the irrelevant dimension in a change-detection task, we found that the performance was affected and the ERP component N270 was enhanced if a change between the probe and the memorized stimulus consisted of irrelevant high-discriminable information, but not if it consisted of irrelevant fine-grained information.We conclude that dissociated extraction mechanisms exist in VWM for information resolved via dissociated processes in visual perception (at least for the information tested in the current study), supporting the analogy hypothesis

Pregnancy planning and lifestyle prior to conception and during early pregnancy among Danish women

Objective To investigate the extent to which Danish women attending antenatal care plan their pregnancies and to determine the association between pregnancy planning and the intake of folic acid, alcohol consumption and smoking habits prior to conception and before the 16th week of gestation. Methods A cross-sectional survey of 258 women. Main outcome measures: intake of folic acid, alcohol consumption and smoking. Pregnancy planning was assessed by the London Measure of Unplanned Pregnancy (LMUP) and the five graded Swedish Pregnancy Planning Scale. Results Most (77%) of the participants reported that their pregnancies were very or fairly well planned. Higher median LMUP scores were observed in women taking folic acid (p < 0.001), in those consuming less alcohol, and in women who stopped smoking prior to pregnancy (p = 0.043). However, 43% of the respondents with a high degree of pregnancy planning and 98% of those with a low degree of planning had not taken folic acid prior to pregnancy. Binge drinking during early pregnancy was reported by 20% of women with a high degree of planned pregnancy and 31% of those with a low degree (p = 0.1). Conclusion Pregnancy planning was associated with a healthier lifestyle but still many women could improve their lifestyle in connection to pregnancy. Their level of alcohol consumption is higher than that recommended for best pregnancy outcome. © 2014 The European Society of Contraception and Reproductive Health

Pregnancy planning and lifestyle prior to conception and during early pregnancy among Danish women

Objective To investigate the extent to which Danish women attending antenatal care plan their pregnancies and to determine the association between pregnancy planning and the intake of folic acid, alcohol consumption and smoking habits prior to conception and before the 16th week of gestation. Methods A cross-sectional survey of 258 women. Main outcome measures: intake of folic acid, alcohol consumption and smoking. Pregnancy planning was assessed by the London Measure of Unplanned Pregnancy (LMUP) and the five graded Swedish Pregnancy Planning Scale. Results Most (77%) of the participants reported that their pregnancies were very or fairly well planned. Higher median LMUP scores were observed in women taking folic acid (p < 0.001), in those consuming less alcohol, and in women who stopped smoking prior to pregnancy (p = 0.043). However, 43% of the respondents with a high degree of pregnancy planning and 98% of those with a low degree of planning had not taken folic acid prior to pregnancy. Binge drinking during early pregnancy was reported by 20% of women with a high degree of planned pregnancy and 31% of those with a low degree (p = 0.1). Conclusion Pregnancy planning was associated with a healthier lifestyle but still many women could improve their lifestyle in connection to pregnancy. Their level of alcohol consumption is higher than that recommended for best pregnancy outcome. © 2014 The European Society of Contraception and Reproductive Health

International Waist Circumference Percentile Cutoffs for Central Obesity in Children and Adolescents Aged 6 to 18 Years.

No universal waist circumference (WC) percentile cutoffs used have been proposed for screening central obesity in children and adolescents. To develop international WC percentile cutoffs for children and adolescents with normal weight based on data from 8 countries in different global regions and to examine the relation with cardiovascular risk. We used pooled data on WC in 113,453 children and adolescents (males 50.2%) aged 4 to 20 years from 8 countries in different regions (Bulgaria, China, Iran, Korea, Malaysia, Poland, Seychelles, and Switzerland). We calculated WC percentile cutoffs in samples including or excluding children with obesity, overweight, or underweight. WC percentiles were generated using the general additive model for location, scale, and shape (GAMLSS). We also estimated the predictive power of the WC 90th percentile cutoffs to predict cardiovascular risk using receiver operator characteristics curve analysis based on data from 3 countries that had available data (China, Iran, and Korea). We also examined which WC percentiles linked with WC cutoffs for central obesity in adults (at age of 18 years). WC measured based on recommendation by the World Health Organization. We validated the performance of the age- and sex-specific 90th percentile WC cutoffs calculated in children and adolescents (6-18 years of age) with normal weight (excluding youth with obesity, overweight, or underweight) by linking the percentile with cardiovascular risk (area under the curve [AUC]: 0.69 for boys; 0.63 for girls). In addition, WC percentile among normal weight children linked relatively well with established WC cutoffs for central obesity in adults (eg, AUC in US adolescents: 0.71 for boys; 0.68 for girls). The international WC cutoffs developed in this study could be useful to screen central obesity in children and adolescents aged 6 to 18 years and allow direct comparison of WC distributions between populations and over time